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FAQ2019-03-08T15:39:46+00:00

FAQ

Most frequently asked questions can be found by searching the list below. If you require additional information please contact us directly.

Data Acquisition (DAQ) | Oscilloscopes | Memory Recorders

Can I use any company’s PC card in my HIOKI power meter or Memory HiCorder?
You may not be able to use some PC cards that typically are available for purchase in computer stores and other shops. Please use a genuine HIOKI product for which HIOKI has verified proper operation.

Hioki USA   June 15, 2017  


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The measurement resolution of the Memory HiCorder MR8847’s Analog Unit 8966 is defined as 1/100 of the range. How many bits is the A/D resolution?
Vertical-axis full scale on the Memory HiCorder MR8847 is 20 div. Since the resolution is 1/100 of the range, the number of data points in the range that can be shown on the display is 2,000. However, the instrument actually records 4,000 data points, including those that fall outside the display range. By doing so, it makes it possible to check waveforms outside the screen range by moving the zero-position up or down after recording is complete. Consequently, the user manual and catalog indicate that the instrument uses 12-bit A/D conversion. Please note that the measurement resolution relative to the range varies with the input module and Memory HiCorder or other equipment being used.

Hioki USA   June 15, 2017  


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In the specifications for a Memory HiCorder input unit, a maximum rated voltage to earth as well as a maximum input voltage are listed. What is the difference between these two characteristics?
The maximum rated voltage to earth is the upper limit voltage that can be applied between input channel and the instrument’s enclosure or between input channels without damaging the instrument. By contrast, the maximum rated input voltage is the upper limit voltage that can be applied between input terminals without damaging the instrument.

Hioki USA   June 15, 2017  


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When I convert the recording data to CSV usinge WaveViewer, there are two values at the same time stamp. CH1(Max)[V] CH1(Min)[V] CH2(Max)[V] CH2(Min)[V]... There are always Max and Min values for each channel at the same time. Why does this happen, and which one is more appropriate to analyze the data?

The data is RECORDER function data with the extension ".rec".  The time axis and sampling interval are set in the RECORDER function, and the time axis is selectable in 19 steps between 10ms/div and 1h/div. The time axis resolution is 100 points/div, so the resolution is 10ms when 10s/div is set.
Then, if you set 1ms for the sampling interval, there are 10 sampling data in 10ms (time resolution).
The RECORDER function records the maximum and minumum from these 10 sampled data, resulting in two values for each time.
Unfortunately, we are not in a position to recommend which Max or Min data should be used for your evaluation.

For your reference, the sampling interval is fixed at 1/100 of the time axis range in the MEMORY function.
(1/80 of the time axis range for the 8807 and 8808)

Hioki USA   May 15, 2019  


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I want to record a 400V AC power supply waveform using a Memory HiCORDER, but it exceeds the maximum allowable input specifications. Is there any method to record the waveform?

Please use the 9322 Differential Probe to record the waveform of a 400V AC power supply.  It is also useful to measure the waveforms of high voltage like inverter output and PV systems, etc. Its maximum input voltage is 2000V DC /1000V AC (CAT II)/600V AC/DC (CAT III), and the output rate is 1/1000.
The normal input cord and 10:1 or 100:1 probes are dependent on the maximum rated voltage to the earth of the Memory HiCORDERs, but the 9322 offers CAT III 600V safety.
In addition to waveform recording, the 9322  has an RMS function and AC coupling function useful for detecting surge noise on a power supply circuit.

Please note that the MR8880 has a maximum rated voltage to the ground of CAT IV 300V / CAT III 600V.
Also, the maximum voltage between channels is 600V AC/DC, making it possible to measure a 400V circuit directly.

Hioki USA   May 15, 2019  


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I'm using a Memory HiCORDER. What software is downloadable to see waveforms on my PC?

Please download the free WaveViewer software from the following link.
https://www.hioki.com/en/support/versionup/detail/?downloadid=410

MR6000, MR8870, MR8880, MR8875, MR8847 series, 8860 series, MR8827, etc.

Hioki USA   May 15, 2019  


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Is it possible to convert text data recorded on a Memory HiCORDER to binary format?

 

Unfortunately, text data cannot be converted to binary format, because the details of  Memory HiCORDER settings are not available as text data.

Hioki USA   July 25, 2019  


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Question

What is the difference between a respirator and an ECMO (extracorporeal membrane oxygenation machines)?

 

Answer

Please refer to the diagram below.  For further information, please consult with your medical equipment manufacturer.

Please also refer to this FAQ regarding the electrical safety testing of medical equipment.

 

Elliott Benzle   June 17, 2020  


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Data Loggers | Multichannel Loggers

Can I use any company’s PC card in my HIOKI power meter or Memory HiCorder?
You may not be able to use some PC cards that typically are available for purchase in computer stores and other shops. Please use a genuine HIOKI product for which HIOKI has verified proper operation.

Hioki USA   June 15, 2017  


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I purchased an LR8431, installed the Logger Utility, and connected the instrument to my computer with a USB cable, but the computer won’t recognize the LR8431.
The LR8431 can use USB flash drives and is set to do so by default when it ships from the factory. To use the Logger Utility, change the USB mode from “USB flash drive” to “USB communications” on the System screen.

Hioki USA   June 15, 2017  


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I’d like to record a 4 to 20 mA measurement signal with my Memory HiLogger, but the instrument lacks a suitable measurement range. Is there a method I can use to record this signal?
Attach a 250 Ω resistor to the Memory HiLogger’s terminal block along with the signal wires so that the 4 to 20 mA current is converted to, and input as, a 1 to 5 V voltage. The Memory HiLogger’s 1 to 5 V measurement range is convenient in this setup. You can also use the instrument’s scaling function to convert displayed values to desired values.

Hioki USA   June 15, 2017  


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Can the 8430 output data to Excel in realtime?
Yes, please use the free software Logger Utility downloadable from the HIOKI website.

Hioki USA   May 15, 2019  


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There are 3 modes for USB ("USB Memory", "USB Communication", "USB Drive"). What is the difference?

USB Memory
Use a USB flash drive.

USB Communication
Communicate with the LR8431-20 and initiate measurement using the Logger Utility software from a computer (using a USB cable).

USB Drive
Read files on a CF card that is connected to the LR8431-20 from a
computer (using a USB cable).

Hioki USA   May 15, 2019  


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Data Loggers | Temperature Data Loggers | Compact Loggers

For how long can the PW3360 record data on an SD card (2 GB)?
The Clamp On Power Logger PW3360 series testers save data on the Z4001, a 2 GB SD card. For example, if “Average only” is selected as the save parameter while using the 3P2W2M setting, the following save times are achieved (time shown on the PW3360):

Save interval time: 1 sec. → 42.4 days
2 sec. → 84.9 days
5 sec. → 212 days
10 sec. or more → 1 year

If “All” is selected as the save parameter while using the 3P3W2M setting, the following save times are achieved:

Save interval time: 1 sec. → 16.1 days
2 sec. → 32.3 days
5 sec. → 80.7 days
10 sec. → 161 days
15 sec. → 242 days
30 sec. → 1 year

The maximum file size for measurement data is approximately 200 MB. When this amount is exceeded, a separate file will be created, and data will be saved in the new file.

Reference: The PW3360 series testers’ maximum recording time is 1 year.

Hioki USA   June 15, 2017  


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What type of instrument should I use to measure an inverter’s current and voltage?
Typically, you should use a true RMS instrument to measure the current and voltage on the primary side of an inverter because such instruments can accurately measure distorted waveforms. The same type of instrument should be used to measure the current on the secondary side of an inverter. By contrast, you should use a average rectified-type instrument to measure the voltage on the secondary side of an inverter. Use of the average rectification method makes it possible to obtain values that are close to the fundamental component. Therefore, it is recommended to use a true RMS tester to measure the current and voltage on the primary side of an inverter as well as the current on the secondary side, and a average rectified-type tester to measure voltage on the secondary side.

Hioki USA   June 15, 2017  


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Can I use the Wireless Humidity Logger LR8514 (Bluetooth) in China?

Bluetooth communication technology must be approved for use each country.
The LR8514's Bluetooth function is approved for use in China.  Please refer to the specification of each model.
LR8514 (Please see Specifications.)
https://www.hioki.com/en/products/detail/?product_key=5837
For your reference, the LR8410-30 is the approved model in the LR8410 series for use in China.

Hioki USA   March 8, 2019  


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Is the data in memory deleted when replacing the battery on the LR5000 series?

The LR5000 series uses non-volatile memory, so data remains in  memory even if the battery is replaced or consumed.
LR5001, LR5011, LR5021, LR5031, LR5041, LR5042, LR5043, LR5051, etc.

Hioki USA   May 15, 2019  


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Can the infrared temperature meter measure through a glass window?
No, this is not possible.  This will cause the surface temperature of the glass window to be measured.

Hioki USA   July 25, 2019  


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How I should set the emissivity if I do not know the target material's approximate emissivity (or it is not listed in the manual)?
Please calculate the emissivity by comparing the temperature measured by a contact-type temperature meter and infrared meter.
Or, you can use the black spray or tape having known emissivity.

Hioki USA   July 25, 2019  


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I plan to measure the illuminance with the FT3425 of some points in the office. What image file can be loaded to the GENNECT Cross?
GENNECT Cross can process BMP, JPG and PNG image files.

Hioki USA   July 25, 2019  


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LCR Meters | Impedance Analyzers | Capacitance Meters

How can I download the application and learn more about communications commands?
You can download the sample application and view the Communications Command User Manual here.

Hioki USA   June 15, 2017  


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What format does the Impedance Analyzer IM3570 use to save data?
The instrument saves data in either CSV or BMP format.

Hioki USA   June 15, 2017  


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What can you tell me about sample current and voltage dependency?
Inductors with cores exhibit current dependency. Air-core inductors do not exhibit current dependency. An LCR meter’s V and CV (constant-voltage) modes can be used to measure samples that exhibit voltage dependency (ceramic capacitors, etc.). Select CV mode when you do not wish to change the voltage applied to both ends of the sample. To the extent that the voltage value is monitored and controlled with feedback, CV mode results in longer measurement times than V mode.

Hioki USA   June 15, 2017  


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How to measure the impedance of coaxial cables using an LCR meter

Connect the Hpot and Hcur to the shield of the coaxial cable, and connect Lpt and Lcur to the core wire. Impedance is measured by opening the one side to obtain [Zo] and shorting the other side to obtain [Zs]. Then, the impedance characteristics is calculated with the formula Z=√(ZoZs).

Hioki USA   July 25, 2019  


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Resistance Meters | Battery Testers

Are there any precautions that should be observed when measuring an inductor or transformer?
When measuring the resistance of an inductor or transformer after conducting an insulation withstanding test, you could damage the resistance meter if the output voltage from the insulation withstanding tester is inadvertently applied to it. Exercise caution concerning the following when using a custom-designed switching system to perform measurement. Ensure that the switching device (relay, switch, etc.) does not cause the high voltage from the insulation withstanding tester to be applied to the resistance meter. Additionally, allow sufficient time for the measurement target to discharge after the test before performing resistance measurement as it will have become charged.

Hioki USA   June 15, 2017  


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What measurement principles do resistance meters use?
When a current I is applied to the object under measurement, a resistance R and the voltage V are generated with the relationship R = V / I. The resistance R can be calculated using this relationship. Resistance meters provide three measurement methods: constant current (CC), which applies a constant current to the sample; constant voltage (CV), which applies a constant voltage to both ends of the sample; and a third that applies the voltage across the combination of the instrument’s output impedance and the series-connected sample. HIOKI resistance meters use the CC method. Super-insulation resistance meters use the CV method, and some LCR meters allow the user to select any of the three methods.
Applicable products: 3541, RM3542, RM3543, RM3544, RM3548

Hioki USA   June 15, 2017  


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Can the 3554 be used to diagnose deterioration in industrial-use alkaline batteries?
Since industrial-use alkaline batteries exhibit only a small change in resistance value when they deteriorate, it is difficult to use the 3554 to diagnose deterioration in service life (by measuring changes in internal resistance).

Hioki USA   June 15, 2017  


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When I used the 3554 to measure a battery’s internal resistance, the instrument was unable to display the reading because the resistance values were unstable.
If the measured values are unstable as described below, try the suggested action under “Causes and solutions.”

Symptoms
1. The measured values are abnormal.
2. The instrument display shows “----.”
3. The instrument display shows “OF.”

Causes and solutions
1. There is a wiring break in the test leads. → Replace the test leads.
*Test leads that have been bent frequently in the past may develop a break in their wiring.
2. The test leads are not connected properly. → Connect the test leads properly.
3. The 3554’s fuse has blown. → Replace the fuse.
4. Zero-adjustment has not been performed properly. → Perform zero-adjustment properly.
5. An appropriate range has not been selected. → Select an appropriate range with the instrument’s range button.
6. The tip of the pin-type lead is damaged. → The tip pin on the 9465-10 and 9772 (9465-90/9772-90) is user-replaceable.

Hioki USA   June 15, 2017  


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Can I use manganese batteries to power the BT3554?
The specifications for continuous operatiing time (8.5 hours approx.) is defined for alkaline batteries.
If you use manganese batteries, the continuous operating time becomes significantly less (2.5 hours approx., reference only).

Hioki USA   March 8, 2019  


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Can I use NiMH (nickel metal hydride ) batteries to power the BT3554?

Technically, you can.
However, the BT3554 was designed to operate with alkaline batteries, so there will be large discrepancies on the battery level indicator because of the different discharge characteristics between NiMH and alkaline batteries.
The indicator operates based on the characteristics of alkaline batteries.  Therefore, the unit may shut off suddenly even if the power indicator shows sufficient battery life when you use NiMH batteries.

Hioki USA   March 8, 2019  


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What is the highest capacity (ampere hour) of a battery on which I can measure internal resistance and voltage?

There is no limit with regardds to battery capacity (Ah), because the battery tester measures using an AC signal and there is no DC current injection to the battery under test.

Hioki USA   March 8, 2019  


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Please advise what should be noted when making a scanner system for the BT3562. The measured value sometimes shows "-----" when the BT3562 is used with my scanner.

Please note the following.
* Use a relay designed for signals with low noise.
* Locate the HI and LO of the SENSE side as close as possible to each other to minimize the loop area.  Do the same for the SOURCE side, etc.
* Keep enough distance betweeen SENSE and SOURCE to prevent interference with each other.
* Keep enough distance between cables and metallic parts (chassis, etc.).
* When using a socket type power relay, a contact error may occur via the oxide film on its contact section and the measurement value may display "-----" (measurement error).  Please change the relay to a signal type.
* The cabling path resistance between HI and LO is allowed up to 2-ohm only when using the 3m-ohm or 30m-ohm range.  Please pay careful attention when selecting the cable length and thickness, number of relays and probe contact resistance, etc.

Hioki USA   March 8, 2019  


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Please advise how to calculate measurement accuracy uncertainty on LCR meters.

Please download the LCR Sample Application (IM3523/IM3533/IM3533-01/IM3536/IM3570/IM3590/IM7580) from the link below.
There is an accuracy calculation function for various Hioki LCR models.

https://www.hioki.com/en/support/versionup/detail/?downloadid=257

Hioki USA   March 8, 2019  


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I cannot transfer the data saved in the memory of the BT3554 via USB. I use the "Application Software for Battery HiTESTER 3554".

The software "Application Software for Battery HiTESTER 3554" is not compatible to the BT3554.
Please use the "GENNECT Cross for Windows" fto transfer the data from the BT3554.
GENNECT Cross for Windows
https://app.hioki.com/appli_pc/index_e.html
This software is also compatible to the previous model 3554, except Indows 8 and 10.

Hioki USA   March 8, 2019  


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What happens if 500V is input to the 3554 by mistake?

The protective fuse will blow before 100V DC is reached on the 3554.
For your reference, the fuse blows at +/-110V DC or 80V AC (50/60Hz) on the BT3554.

The fuse rating is 250V, but is voltage applied between both ends of the fuse.
Therefore, it is different from the voltage measured between input terminals.
The input voltage is divided by the circuit and the lower voltage is applied to the fuse.

Hioki USA   March 8, 2019  


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Is it possible to conduct temperature compensation for the internal resistance measured by the BT3554 with the Clip-type Lead with Temperature Sensor 9460?

Ther BT3554 does not have a temperature compensation function.
The 9460 measures the temperature of the battery teminal.
The internal resistance of battery changes according to temperature, so the temperature information can be used as reference to analyze the changes to the battery's internal resistance values.

Hioki USA   March 8, 2019  


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I want to make probes to install a resistance meter into an automation test system. Is there anything to be noted?

The cable section is shielded, so the following should be noted when you make your own probes.

Place shielding connected to SOURCE-L.

Cable length should be within 5 meters (using a cable material resistance within 100mΩ/m)

Hioki USA   May 15, 2019  


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The displayed values are different when exchanging the HI and LO probes on the 3540. What is the reason?

This may be attributed to thermo-electromotive force.
There is more effect if a resistance meter applies a DC current and reads the electric potential difference, like that on the 3540.
The following countermeasures should be considered if the measurement value has a larger error due to thernal electromotive force.

1) Use the average by exchanging the probe terminals
2) Stabilize the ambient temperature to avoid changing of thermo electromotive force due to temperature.

Hioki USA   May 15, 2019  


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Question

Can I install the 2103 Meter Relay on a 440V AC line?

 

Answer

The maximum rated voltage to earth for the 2103 Meter Relay is 300V AC/DC.  If the rated voltage to earth does not exceed 300V, you can use the 2103 in the system.

If the line voltage is 440V AC, that means that the voltage should earth should be 440V/√3≒254V, and within the limitations of the meter relay.  Please verify the actual rated voltage to earth of the  system before use.

This also applies to Model 2104 Meter Relay.

Elliott Benzle   June 17, 2020  


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Super Megohmmeters | Electrometers | Picoammeters

Sorry, No FAQ Available!

Electrical Safety Analyzers | Hipot Testers

I’ve purchased a 3174 and have just opened the box. Why can’t I use the instrument to conduct a test?
The instrument ships with its double-action function activated for safety reasons. This function ensures that measurement does not start if the START button is not pressed within 0.5 seconds of the STOP button being pressed. If you do not require this function to be enabled, it can be disabled as described on page 81 of the user manual.

Hioki USA   June 15, 2017  


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Which standards provide information about shortening testing time with the 3158 withstanding tester?
For example, IEC 61010 (Appendix F) addresses shortening of testing time. Please consult the specifications you’re using as specific rules vary. If there is a routine test item in the specifications, you should be able to refer to that.

Hioki USA   June 15, 2017  


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When I try to start the test, measurement does not start.
The instrument will not make measurements or judgments until the actual output voltage reaches the set test voltage. Depending on the device being tested, it may take some time for the test voltage to be reached. For example, if there is capacitance, it may take time for the test voltage to be reached due to the time constant, which is determined by the capacitance and resistance values. With high resistance, the time constant for the measurement circuit may cause it to take some time for measured values to be displayed.

Hioki USA   June 15, 2017  


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What does this mean?
“OF” means “overflow,” and it is equivalent to an infinite result on an analog insulation resistance meter. Digital Megaohm HiTesters display “OF” when the measured value is greater than or equal to the resistance display range. As a rule, this indicates extremely good insulation, although you should short the test lead tips on a regular basis to verify that there are no broken connections causing this result.

Hioki USA   June 15, 2017  


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Insulators generally have the following characteristics. Their resistance value varies with temperature. (The resistance value decreases as the temperature increases.) Their resistance value varies with the voltage being used to measure it. (The resistance value decreases as higher voltages are applied during measurement.) Their resistance value decreases as they absorb moisture. (The resistance value decreases dramatically under conditions of high humidity.)

Hioki USA   June 15, 2017  


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Benchtop Digital Multimeters (DMMs)

I use the 3237, 3238, and 3239 to perform high-resistance measurement, but at and above 5 MΩ measured values vary widely. Is the instrument broken?
The instrument may be set to the wrong power supply frequency. This can have a pronounced effect during high-resistance measurement. Precaution concerning high-resistance measurement: Since this type of measurement is susceptible to the effects of external noise, shield the red leads and the measurement target and connect the shielding to the instrument’s COM terminal.

Hioki USA   June 15, 2017  


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The specifications of the HiTester 3030-10 and Multi Tester 3008 indicate an internal resistance of 20 kΩ/V. Please tell me about the effects of the tester’s internal resistance.
Although internal resistance would ideally be infinite, testers always have a certain internal resistance. DMMs have a high internal resistance that is generally at least 10 MΩ (although it may vary with the measurement range), while analog testers (3030-10, 3008) have a DC voltmeter with an internal resistance of 20 kΩ/V (the 3030-10’s 0.3 V range has an internal resistance of 16.7 kΩ/V). When measuring a circuit’s voltage, the tester’s internal resistance is connected in parallel with the actual measurement circuit. The magnitude of the effect of the internal resistance is determined by the proportion of the resistance of the circuit being measured to the tester’s internal resistance, and it decreases as the tester’s internal resistance increases. Consequently, it is necessary to exercise caution when measuring a high-resistance circuit such as a transistor base circuit with a tester that has a low internal resistance, because the indicated voltage will be lower than the actual voltage.

Hioki USA   June 15, 2017  


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Signal Generators | Calibrators

How can I generate 4 to 20 mA current when using the SS7012 with a 24 V power supply?
It is not problematic to use a 24 V power supply. Use constant-current output from -4 to -20 mA. Both the SS7012 and 7016 generate bipolar output that can operate as either sink or source.

Hioki USA   June 15, 2017  


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High Precision Power Meters | Power Analyzers

Can I use any company’s PC card in my HIOKI power meter or Memory HiCorder?
You may not be able to use some PC cards that typically are available for purchase in computer stores and other shops. Please use a genuine HIOKI product for which HIOKI has verified proper operation.

Hioki USA   June 15, 2017  


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What type of instrument should I use to measure an inverter’s current and voltage?
Typically, you should use a true RMS instrument to measure the current and voltage on the primary side of an inverter because such instruments can accurately measure distorted waveforms. The same type of instrument should be used to measure the current on the secondary side of an inverter. By contrast, you should use a average rectified-type instrument to measure the voltage on the secondary side of an inverter. Use of the average rectification method makes it possible to obtain values that are close to the fundamental component. Therefore, it is recommended to use a true RMS tester to measure the current and voltage on the primary side of an inverter as well as the current on the secondary side, and a average rectified-type tester to measure voltage on the secondary side.

Hioki USA   June 15, 2017  


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How do the functions of the 3390 and 3390-10 differ?
The 3390 and 3390-10 do not differ in terms of functionality. The 3390-10 provides high-accuracy performance for the following ranges when used in combination with a specially designed high-accuracy pass-through sensor:
Voltage: DC
Current and active power: DC and 45 to 66 Hz frequency range
Power factor effect (active power with a low power factor): 45 to 66 Hz frequency range
In other frequency ranges, the 3390-10 delivers the same level of accuracy as the 3390 used with the CT6862, CT6863, or 9709.
High accuracy is guaranteed when used in combination with the CT6862-10, CT6863-10, and 9709-10. High accuracy is only guaranteed when these sensors are used in combination with the 3390-10.

Hioki USA   June 15, 2017  


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Do measured values vary with the power meter connection?
When connecting the instrument, the voltage input terminals can be connected to the load, or the current terminals can be connected to the load. Which connection should be used varies with the magnitude of the voltage and current being measured.

Connecting the voltage terminals to the load
Power measurements will include loss from the voltage input terminals’ input resistance. Loss due to the instrument can be minimized when the measured voltage is low and the measured current is small.

Connecting the current terminals to the load
Power measurements will include loss from the current input terminals’ input resistance. Loss due to the instrument can be minimized when the measured voltage is high and the measured current is small.

When using clamp-on sensor input, the sensor’s loss can be ignored for the most part.

Hioki USA   June 15, 2017  


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Why is power factor expressed with a negative sign? Is there any relationship between the polarity of power factor and active power?

The polarity sign of power factor represents the phase relationship between the voltage and current.
It is positive (+) when voltage lags relative to current.
On the other hand, negative (-) means that voltage leads current.
There is no relationship to the polarity sign of active power (W).

Hioki USA   March 8, 2019  


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What does it mean to have a negative power factor value?

Our power meters/analyzers display power factor polarty to illustrate the following:

No sign (+):  Current LAGs voltage.
Negative (-):  Current LEADs voltage.

Hioki USA   March 8, 2019  


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What is the difference between True RMS and MEAN testers?
In the field of electricity, AC signals are defined as RMS values.
There are two AC rectification methods for testers: True RMS and MEAN.
Both indicate the same value as long as there is no distortion in the  waveforms.
However, the two values will be different if there is distortion generated by inverters and/or switching power supplies.
True RMS testers measure the correct RMS value even if the waveform is distorted.

Hioki USA   May 15, 2019  


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My power meter displays a negative power factor value. Why is the value negative?

The polarity sign of power factor represents the phase relationship between voltage and current.

Positive (+):  Current lags voltage phase
Negative (-):  Current leads voltage phase
(Similar with reactive power polarity)

Hioki USA   July 25, 2019  


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Why is the measurement value different depending on the wiring to the power meter?

There are two wiring methods for the power meter to input the current directly.
According to the voltage and current being measure, please use the appropriate wiring method from the following.

1) Connecting the current terminals to the load side
This method measures the power including the loss of the input resistance on the current input terminal.
This method minimizes meter loss when the voltage is high and the current is low.

2) Connecting the voltage terminals to the load side
This method measures the power including the loss of input resistance of the voltage input terminal.
This method minimizes meter loss when the voltage is low and the current is high

Hioki USA   July 25, 2019  


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Power Quality Analyzers | Power Loggers

Can I use any company’s PC card in my HIOKI power meter or Memory HiCorder?
You may not be able to use some PC cards that typically are available for purchase in computer stores and other shops. Please use a genuine HIOKI product for which HIOKI has verified proper operation.

Hioki USA   June 15, 2017  


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For how long can the PW3360 record data on an SD card (2 GB)?
The Clamp On Power Logger PW3360 series testers save data on the Z4001, a 2 GB SD card. For example, if “Average only” is selected as the save parameter while using the 3P2W2M setting, the following save times are achieved (time shown on the PW3360):

Save interval time: 1 sec. → 42.4 days
2 sec. → 84.9 days
5 sec. → 212 days
10 sec. or more → 1 year

If “All” is selected as the save parameter while using the 3P3W2M setting, the following save times are achieved:

Save interval time: 1 sec. → 16.1 days
2 sec. → 32.3 days
5 sec. → 80.7 days
10 sec. → 161 days
15 sec. → 242 days
30 sec. → 1 year

The maximum file size for measurement data is approximately 200 MB. When this amount is exceeded, a separate file will be created, and data will be saved in the new file.

Reference: The PW3360 series testers’ maximum recording time is 1 year.

Hioki USA   June 15, 2017  


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What type of instrument should I use to measure an inverter’s current and voltage?
Typically, you should use a true RMS instrument to measure the current and voltage on the primary side of an inverter because such instruments can accurately measure distorted waveforms. The same type of instrument should be used to measure the current on the secondary side of an inverter. By contrast, you should use a average rectified-type instrument to measure the voltage on the secondary side of an inverter. Use of the average rectification method makes it possible to obtain values that are close to the fundamental component. Therefore, it is recommended to use a true RMS tester to measure the current and voltage on the primary side of an inverter as well as the current on the secondary side, and a average rectified-type tester to measure voltage on the secondary side.

Hioki USA   June 15, 2017  


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Do measured values vary with the power meter connection?
When connecting the instrument, the voltage input terminals can be connected to the load, or the current terminals can be connected to the load. Which connection should be used varies with the magnitude of the voltage and current being measured.

Connecting the voltage terminals to the load
Power measurements will include loss from the voltage input terminals’ input resistance. Loss due to the instrument can be minimized when the measured voltage is low and the measured current is small.

Connecting the current terminals to the load
Power measurements will include loss from the current input terminals’ input resistance. Loss due to the instrument can be minimized when the measured voltage is high and the measured current is small.

When using clamp-on sensor input, the sensor’s loss can be ignored for the most part.

Hioki USA   June 15, 2017  


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The PW3198 has a repeat recording setting. How can I use this function?
The Power Quality Analyzer PW3198 can use a single measurement interval of up to 35 days in length. However, you can configure repeat recording if you wish to record longer periods of time. You can repeatedly record data every day or week and save it on the SD card for up to 55 weeks (when using a 2 GB SD card).

Hioki USA   June 15, 2017  


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I’d like to save data to a computer while measurement is ongoing. Can I remove the PC card during measurement?
As a rule, the card should not be removed during measurement. The data will be corrupted if the card is inserted or removed while the instrument is saving data. If you must capture measurement data during measurement, the card can be removed during interval measurement while the instrument is not saving data. Please avoid removing the card if using a short interval time.

Hioki USA   June 15, 2017  


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I’m checking measurement data with a clamp-on power meter, but the P1 value is negative. Is this value correct?
When you look at measurement data from the Clamp On Power HiTester 3169 in 3P3W2M mode, you’ll find P1 and P2 values. Regardless of whether the instrument has been connected properly, one of the two values may be negative. For example, the P1 measured value may be negative when measuring the power of a motor operating under a light load. The 3169’s 3P3W2M mode uses two-power measurement. Since the 3-phase power is calculated by adding P1 and P2 (as per Blondel’s theorem), it is not a problem for either P1 or P2 to be negative as long as the instrument has been connected properly.

Hioki USA   June 15, 2017  


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The instrument indicates an error when it checks the connection, even though it is connected properly.
The connection check function may indicate an error even though the instrument is connected properly, or it may yield an OK result even though the instrument is not connected properly. Check for problems with the vector display or measured values. Particularly when the power factor is 0.5 or less, the phase difference (I-U) may trigger an error even if the instrument is connected properly. If you check the connection and find no problem, measurement can be performed without issue despite the indicated error.

Hioki USA   June 15, 2017  


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When I used Excel to view measurement data recorded onto a PC card with a clamp-on power meter, the voltage U1 was displayed in a format such as “1.05E+02.”
When CSV-format data from the 3169 is opened in Excel, it is displayed using exponents. “1.05E+02” means 1.05×102.

Hioki USA   June 15, 2017  


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I am analyzing the binary data recorded by the PW3360-21 on the SF1001, but I cannot save the data in CSV.

The SF1001 saves  harmonic data in binary format only.
The other data can be saved in CSV, but the data displayed in "Harmonic: List" and "Harmonic: Graph" cannot be saved in CSV.
The harmonic data displayed in "Time-series graph", "Summary", or "Report Daily/Weekly/Monthly" screen can be saved in CSV.  Please use these data as alternatives if you need CSV data.

Hioki USA   March 7, 2019  


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How can observe the data recorded by the PW3360 (PW3365) on a PC?

The data recorded by the PW3360 and PW3365 is CSV data, so that you can analyze on MS Excel in addition to our optional softwware Power Logger Viewer SF1001.  Also, we offer the PW3360/PW3365 Auto Excel Graph Creation Application on our website.
https://www.hioki.com/en/support/versionup/detail/?downloadid=209
Unfortunately, the data cannot be re-loaded to the PW3360 or PW3365 itself.

Hioki USA   March 8, 2019  


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Is it possible to display the phase voltage in 3P3W (delta) configuration on the PW3198?

Yes, it is possible.  First set 3P3W3M wiring. Then, select "PHASE-N"  for "Urms type" in the "SYSTEM-MAIN" screem.  If you select "LINE-LINE", the voltage between phases (line-to-line) can be displayed.

Hioki USA   March 8, 2019  


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When I output the event waveform data measured by the PQ3100 ifrom the PQ ONE in CSV, the CSV file has only 1 digit after the second in the Time column of the CSV data. I would like to have the same resolution to the PQ ONE screen.

 

Hioki USA   March 8, 2019  


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What is the rated current of the Magnet adapter 9804? I plan to use it for the power supply with the Voltage Line Power Adapter PW9003.

It is 2A rated.
However, please note that it is not able to measure the current.

Hioki USA   March 8, 2019  


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Is it possible to measure the leakage current using the Clamp on Power HITESTER 3169?

There is no clamp on sensor selection for the Leak Current Sensors 9657-10 or 9675 on the 3169.
However, you can use them by making the following settings.
Sensor:  9661 (100mV AC/A)
CT ratio:  0.01
By observing the fundamental frequency (1st order) captured during harmonic measurement, you can identify leakage current at 50/60Hz.

Hioki USA   March 8, 2019  


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Why are the waveforms recorded by the PW3198 are different between transient and other events?

The PW3198 measures normal power quality items and transient overvoltage separately and differently:
* Normal power quality event:  200kS/s, waveform saved for "2 cycles + 200ms + 2 cycies" after thinning to 20kS/s
* Transient overvoltage:  2MS/s, waveform saved for 2ms before and after detection as 2MS/s data through 5kHz LPF to remove the fundamental  frequency component.
Applicable models:  PW3198, 9624-50, 3196

Hioki USA   March 8, 2019  


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I recorded power using the Clamp On Power Logger PW3360 at15min intervals. However, I cannot find the maximum data. Why?

On the PW3360, you can select to record "Average only" or "All".
Average only:  Record the average value of each interval
All:  Record the maximum, minimum and avarage values of each interval.
Pleaase confirm if "All" has been set.

Hioki USA   March 8, 2019  


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Is it possible to set the 50A range on the PW3360 when using the Clamp On Sensor 9694 (5A AC)?

The rated current of the 9694 is 5A AC, but its maximum input current is 50A continuous.
Therefore, the 9694 can be used in the 50A range with the PW3360.
However, please note that the accuracy of the 9694 is specified only up to 5A, and there is no defined accuracy for the 10A and 50A ranges.

Hioki USA   March 8, 2019  


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I want to measure inrush current using the PW3198. In the EVENT2-CURRENT screen, there are "Inrush" and "I peak" selections. Which one is more appropriate to capture inrush current at 5A instantaneous peak?

Both are able to detect and capture the event waveform, though the detection timing is slightly different due to the differing threshold definitions:

Inrush:  Detect when the current RMS value (half cycle) is 5A or higher.
I peak:  Detect when the waveform peak is 5A or higher.

Hioki USA   March 8, 2019  


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What is the difference between RMS fluctuation and voltage fluctuation?

RMS fluctuation
The signals are calculated as RMS values every 200ms for both voltage and current (10 cycles on 50Hz and 12 cycles on 60Hz).
It is difficult to find instantaneous voltage drops that take place in half or 1 cycle, because it is averaged in a longer calculation period.  Most equipment is not affected by voltage drops with a duration of a half or 1 cycle.  Rather, It is used to watch  fluctuation trends during longer periods or a few cycles.

Voltage fluctuation
The voltage RMs value is calculated in every cycle, so you can see an instantaneous voltage drop that happens in half a cycle or 1 cycle. This is useul for finding the instantaneous votlage fluctuation.

Hioki USA   May 15, 2019  


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I recorded power consumption data using the PW3360 before and after installing a power factor correction capacitor. I would like to display both in one graph to compare the improvement on the SF1001. Is that possible?

The SF1001 can change the date of the data recorded by the PW3360 and PW3365, so that you can easily display different data in one graph.
Please refer to "2.8 Changing the Date of Measurement Data" in the SF1001 instuction manual for details.

[Applicable models]
PW3360, PW3365, SF1001

Hioki USA   July 25, 2019  


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There was power outage while I was logging with the PW3360. The power supply is already recovered, but what happens to the recorded data?
The data and setings before the power outage is backed up even if the power is interrupted while logging.
After the power is recovered, logging continues with a new data file.

Hioki USA   July 25, 2019  


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The time series data of the PW3360 has MAX, MIN, and AVG values for every interval. How are they calculated?
The PW3360 calculates continuously without any gap based on a 200ms interval.
The recording interval can be set from 1s to 60min.
If you set to a 10s interval, there are 50 data in 10s.  Then, the maximum, minimum and average of 50 values are recorded.
This is helpful for understanding power fluctuation even if you use a long interval.
This is the same as the PW3365.

Hioki USA   July 25, 2019  


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Question

How do I change the unit of measurement on a power meter?

 

Answer

The unit of measurement for a range cannot be set permanently on the main device, but you can change it on the PC application during data management and analysis.  On the PC, you can set the auxiliary unit of measurement to be displayed (e.g., use kW to represent active power) as well as the number of digits to display after the decimal point.

This applies to the following PC applications and supporting power loggers or PQAs:

SF1001 Power Logger Viewer
• PW3360 Clamp On Power Logger
• PW3365 Clamp On Power Logger
• 3169 Clamp On Power HiTester

PQ One (ver 6.20 or later)
• PQ3198 Power Quality Analyzer
• PW3198 Power Quality Analyzer
• PQ3100 Power Quality Analyzer

Elliott Benzle   June 17, 2020  


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Question

The data I captured using GENNECT One (SF4000)’s real time monitoring function and the data recorded by the power logger are different. Why is that?

 

Answer

The data captured in real time by the SF4000 GENNECT ONE software and that saved by the power logger are independent from one another, and each set of data reflects the individual settings made on either the device or software.  If you need to see the same data on both the software and the device, please use the same save interval on the power logger and the real-time monitoring function on the SF4000.

This applies to the following power loggers and PQAs:

Elliott Benzle   June 17, 2020  


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Question

Is there a simple way to to monitor and control a PQA remotely?

 

Answer

When measuring using a power quality analyzer or power logger, you can use the SF4000 GENNECT One Windows application's real-time monitoring function or console function to log data and control the measuring instrument remotely. Take note that this is only for Ethernet connections.
Learn more about GENNECT One.

Elliott Benzle   June 17, 2020  


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The measurement data from my PQA (or power logger) has been automatically downloaded via SF4000 GENNECT One. I can see the data inside the database section, but where can I find the raw file?

 

Answer

To obtain the raw file file from the SF4000 GENNECT One Windows application, you need to output the file first. In "Data", select the data that you would like to output by placing a checkmark next to data on the data list. Click "Export" select the desired path.

Elliott Benzle   June 17, 2020  


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Current Probes | Current Sensors

The specifications for the Clamp On Leak HiTester 3283 indicate a maximum rated voltage to earth of 300 V rms AC (insulated conductor) (CAT III, 300 V). Can the 3283 be used to measure a 3-phase 400 V circuit?
The voltage indicated with the CAT II to CAT IV measurement category is the voltage to ground. For example, with a 3-phase/3-wire or 3-phase/4-wire 400 V circuit, the line voltage is 415 V, but the voltage to ground is 240 V. Consequently, a CAT III (300 V) measuring instrument can be used to safely measure a 400 V line in a location that falls under CAT III. All current testers, DMMs, and clamp-on ammeters that bear the CE mark are designed for use in CAT III measurement of 300 V or higher.

*CAT III: A circuit from the primary side of a device (fixed equipment) drawing electricity directly from a distribution panel or from a distribution panel to an outlet

Hioki USA   June 15, 2017  


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The 9667 has been upgraded to the CT9667. What is the difference between the two models?
The CT9667 offers improved functions and features such as an easier to use sensor lock, and the ability to save the range setting during a power outage.
There is no difference with regards to rated current and output rating so the CT9667 can be used with products that are currently paired with the 9667.

Hioki USA   May 15, 2019  


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Optical Power Meters | PV maintenance | LAN Cable Testers

How is cord length measured?
The LAN Cable HiTester 3665 uses time domain reflectometry (TDR) to measure LAN cable length. The instrument sends a pulse signal from the end of the cord and measures the time difference when the signal returns, which it then uses to calculate the cable length.

Hioki USA   June 15, 2017  


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Magnetic Field | Temperature | Sound Level | Lux | Rotation

How far away can an infrared thermometer take readings?
In general, there is no limit on the measuring distance for infrared thermometers, but the field of view becomes problematic. Infrared thermometers work by detecting infrared energy emitted from the object being measured. The distance at which measurement is performed should be determined based on the infrared thermometer’s measuring field of view. While this differs depending on the model, the further away the instrument, the larger the field of view. Keep in mind that the temperature reading represents the average temperature in that field of view.

Hioki USA   June 15, 2017  


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The measurement range of the FT3405 and FT3406 is defined from 30.00r/min or faster. What happnes if the revolution is slower in non-contact measurement?

Unfortunately, nothing is displayed if the revolution is slower than 30.00r/min  (non-contact, average ON).
The low revolution measurement principle of the FT3405 and FT3406 calculates the revolution from the pulse period generated by the reflection light.
For high revolutions, it counts the number of reflection pulses in a specific period.

For low revolutions, it may help to add more reflection tape like 2 or 4 pieces to increase the number of reflection pulses.
If you use 4 tapes, divide the dispayed revolution by 4.

Hioki USA   May 15, 2019  


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Is it possible to change the unit from "T" to "G" on the FT3470?
The FT3470 can be set to display "T (Tesla)", "G (Gauss)", or "A/m (Ampere per meter)".

Hioki USA   July 25, 2019  


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I can measure the temperature using the FT3700/FT3701, but there is no laser marker. Is the unit malfunctioning?

The laser marker is set to OFF as the default setting upon shipment from the HIOKI factory.

Please press the left button (▼) for 1s or longer while pulling the measurement trigger lever.

The same operation once again turns the laser marker OFF.

Hioki USA   July 25, 2019  


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The display on the FT3700 is not turning off. How do I cancel continuous measurment on the product?

You can turn continuous measurement mode ON/OFF by pressing the [▲/LOCK] key (except in emissivity, HAL or LAL mode).

Applicable models:  FT3700, FT3701

Hioki USA   July 25, 2019  


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Can the FT3424 measure LED lighting?

 

The FT3424 can measure LED illuminance (lx) only.

It cannot to measure color temperature, color rendering, and chromaticity, etc.

Hioki USA   July 25, 2019  


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Is there anything to pay attention to when measuring LED lighting?

LED lighting systems have a brightness adjustment capability in these days.
If the adjustment is made by controlling the ON/OFF period of the LED device, (PWM control), you have to be careful when measure the illuminance especially in regards to the precision level.

Switching in a PWM system is made at high frequency that cannot be sensed by human eyes.  There are dramatic illuminance changes, so that peak illuminance may not be properly detected and a lower value may be displayed.

The FT3424 is designed to display the correct value even if testing PWM-controlled LED lighting.

Hioki USA   July 25, 2019  


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Testers | Digital Multimeters (DMMs)

What type of instrument should I use to measure an inverter’s current and voltage?
Typically, you should use a true RMS instrument to measure the current and voltage on the primary side of an inverter because such instruments can accurately measure distorted waveforms. The same type of instrument should be used to measure the current on the secondary side of an inverter. By contrast, you should use a average rectified-type instrument to measure the voltage on the secondary side of an inverter. Use of the average rectification method makes it possible to obtain values that are close to the fundamental component. Therefore, it is recommended to use a true RMS tester to measure the current and voltage on the primary side of an inverter as well as the current on the secondary side, and a average rectified-type tester to measure voltage on the secondary side.

Hioki USA   June 15, 2017  


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The specifications of the HiTester 3030-10 and Multi Tester 3008 indicate an internal resistance of 20 kΩ/V. Please tell me about the effects of the tester’s internal resistance.
Although internal resistance would ideally be infinite, testers always have a certain internal resistance. DMMs have a high internal resistance that is generally at least 10 MΩ (although it may vary with the measurement range), while analog testers (3030-10, 3008) have a DC voltmeter with an internal resistance of 20 kΩ/V (the 3030-10’s 0.3 V range has an internal resistance of 16.7 kΩ/V). When measuring a circuit’s voltage, the tester’s internal resistance is connected in parallel with the actual measurement circuit. The magnitude of the effect of the internal resistance is determined by the proportion of the resistance of the circuit being measured to the tester’s internal resistance, and it decreases as the tester’s internal resistance increases. Consequently, it is necessary to exercise caution when measuring a high-resistance circuit such as a transistor base circuit with a tester that has a low internal resistance, because the indicated voltage will be lower than the actual voltage.

Hioki USA   June 15, 2017  


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How is a digital tester’s resistance function protected?
Since the resistance function measures the target resistance by passing a current through it, the input resistance between the measurement terminals is low. Therefore, the tester is protected by damage in the event of an overvoltage input by an overcurrent protection device, which makes it difficult for current to flow.

Hioki USA   June 15, 2017  


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What current is used when performing resistance measurement with a digital tester?
Broadly speaking, there are two measurement methods.

Constant-voltage method: The current is given by the resistance value being measured and the internal circuit’s reference resistance value and protective resistance, and it varies with the measurement voltage that is applied. I = Measurement voltage / (Reference resistance + protective resistance + resistance being measured)

Constant-current method: A constant current flows to the resistance being measured, and the resistance value is calculated from the resulting voltage drop. Measurement currents for individual ranges can be checked in the product’s user manual.

Hioki USA   June 15, 2017  


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How is a digital tester’s voltage function protected?
The voltage function receives a voltage signal with an input resistance of 10 MΩ. The high input resistance itself serves as input protection.

Hioki USA   June 15, 2017  


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How is a digital tester’s current function protected?
Tester damage is prevented by means of a fuse. During current measurement, current flows to the detection resistor (shunt resistor), and the current is calculated based on the resulting voltage drop. Since the input resistance between the current measurement terminals is low, application of an overvoltage would cause a large current to flow momentarily. Consequently, the protective fuse is selected based on a consideration of that fact.

Hioki USA   June 15, 2017  


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I heard that the IEC 61010 international safety standard for measuring instruments has been revised. What has changed?
The IEC 61010-031 international safety standard for probes was revised, and the new standard went into effect in March 2011. There were two major changes made in response to safety-related requests. The pins on the tips of test probes used for CAT III and CAT IV measurements are now required to limit exposed metal to 4 mm or less (compared to 19 mm previously) to prevent short-circuits and to use two layers of differently colored insulation to allow cable wear to be detectable visually (compared to a single layer previously). HIOKI will modify its testers, probes, and other measurement products over time to comply with these revisions. Safety categories are also defined based on the measuring instrument itself. For example, even if the probe being used is a CAT III 1,000 V model, the CAT III 600 V safety standard will apply if the measuring instrument being used is a CAT III 600 V model.

Hioki USA   June 15, 2017  


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I have a question about an analog tester. The polarity (+/-) is reversed when performing measurements with the resistance range. Why is this? Wouldn’t this invite mistakes, for example when checking diode polarity?
When using an analog tester, after switching from the voltmeter to the resistance meter, the voltmeter’s positive lead is the resistance meter’s negative lead, and the voltmeter’s negative lead is the resistance meter’s positive lead. Please be sure that you understand this fact before using the instrument.

Hioki USA   June 15, 2017  


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Is there any multimeter which can set a threshold for continuity check?
Yes, you can set a threshold for continuity check on the DT4281 and DT4282.
Threshold:  20Ω (default value), 50Ω,  100Ω, 500Ω
When a short is detected, the DMM beeps and the red backlight is lit.

Hioki USA   May 15, 2019  


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Can I get 22.5V batteries for the old analog tester OL64?

Unfortunately, currently no supplier produces a 22.5V battery now, so we will not be able to supply it.
It is used only for the high resistance ranges like MΩ, etc., so you can use the other ranges without this battery.

< Applicable models >
OL-64D, F-66, AF-105, AS100D, A-10, etc.

Hioki USA   May 15, 2019  


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Question

I am using the FTP data transfer function with the MR8875 Memory HiCorder. When I updated my OS from Windows 7 to Windows 10, I also switched my browser from Internet Explorer to Microsoft Edge, but now I can't connect to the MR8875 via FTP.

 

Answer

In general, Microsoft Edge* does not support connection to an FTP server.  We recommend installing Internet Explorer to continue using the FTP function.
*Microsoft Edge is the standard built-in web browser bundled with Windows 10.
Alternatively, use your Windows 10 File Explorer function and add a new network location to your PC.  Specify the new network location as the address of the FTP server in the form of "ftp://server.com".
For larger data transfers, we recommend using an FTP client.
This information also applies to the following products:

Elliott Benzle   June 17, 2020  


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Question

What kinds of recording paper are available for Memory HiCorders?

 

Answer

The following are recording paper for Memory HiCorders are still available for purchase (as of April 2020):

RECORDING PAPER 9231: for MR8860, MR8861, MR8847A, and MR8827 Memory HiCorders (via PRINTER UNIT U8350) and discontinued MR8847, 8860, 8861, 8855, 8847, 8846, 8845, 8842, 8841, 8840

Roll type A4 width 216 mm (8.50 in) × 30 m (98.43 ft), 6 rolls/set

RECORDING PAPER 9234:  for MR8880 Memory HiCorder (via PRINTER UNIT MR9000) and discontinued 8860, 8861, 8420, 8421, 8422, 8807, 8808, 8714, 8715
Roll type A6 width 112 mm (4.41 in) × 18 m (59.06 ft), 10 rolls/set
RECORDING PAPER SE-10:  for PEN RECORDER PR8111 and PR8112
Roll type, 170 mm (6.69 in) × 20 m (65.62 ft), 10 rolls/set
RECORDING PAPER 9231: for discontinued 8804, 8805, 8806, 3193, 3194
Roll type, 74 mm × 10 m, 10 rolls/set
RECORDING PAPER 9229: for discontinued 8825, 8826
Roll type, 264 mm × 30 m, 6 rolls/set
RECORDING PAPER 9229-01: for discontinued 8825, 8826
Perforated roll-type, 264 mm × 30 m, 4rolls/set
RECORDING PAPER 9221: for discontinued 8801 series, 8810 series, 8830 series, 8835 series, 8851, 8852, 8853, 8710, 3195
Roll type, 110 mm × 30 m, 10 rolls/set
RECORDING PAPER 9235: for discontinued 8205, 8206
Roll type, 74 mm × 15 m, 10 rolls/set

RECORDING PAPER 9236-01: for discontinued 8205, 8206
Rugged roll type, 74 mm × 15 m, 10 rolls/set

Elliott Benzle   June 17, 2020  


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Question

Can the 9335 Wave Processor be used to read data recorded by the MR6000?

 

Answer

Yes, version 1.27 or later of 9335 Wave Processor supports data captured by the MR6000.  If you currently use a version older than 1.27, please contact your local HIOKI distributor or subsidiary with the serial number of your product in order to obtain the latest version of the software.
For your information, the latest version of the free HIOKI Waveviewer (Wv) is also compatible with the MR6000.  Learn more here.

Elliott Benzle   June 17, 2020  


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Question

HIOKI has many clamp meters. Is there a comparison chart of that shows the different jaw sizes?

 

Answer

Yes, please refer to the illustration below.  For further information, please go to the landing page of the respective clamp meter and click “Specifications”.

Elliott Benzle   June 17, 2020  


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Insulation Testers | Megohmmeters

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Clamp Meters | Clamp Multimeters

The specifications for the Clamp On Leak HiTester 3283 indicate a maximum rated voltage to earth of 300 V rms AC (insulated conductor) (CAT III, 300 V). Can the 3283 be used to measure a 3-phase 400 V circuit?
The voltage indicated with the CAT II to CAT IV measurement category is the voltage to ground. For example, with a 3-phase/3-wire or 3-phase/4-wire 400 V circuit, the line voltage is 415 V, but the voltage to ground is 240 V. Consequently, a CAT III (300 V) measuring instrument can be used to safely measure a 400 V line in a location that falls under CAT III. All current testers, DMMs, and clamp-on ammeters that bear the CE mark are designed for use in CAT III measurement of 300 V or higher.

*CAT III: A circuit from the primary side of a device (fixed equipment) drawing electricity directly from a distribution panel or from a distribution panel to an outlet

Hioki USA   June 15, 2017  


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When should the filter function provided by the 3282 and 3293-50 be used?
The growing popularity of switching power supplies and inverter-equipped devices has made it more likely that harmonic components may be superposed on leak current waveforms. The filter function provided by the 3283 and 3293-50 corresponds to the earth leakage breaker (ELB) response frequency. By turning the filter function on, you can achieve the same frequency bandwidth (180 Hz) as an ELB, allowing measurement of leak current with a commercial power frequency component.

Hioki USA   June 15, 2017  


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Why can leak current be measured by clamping two power supply lines?
If there is no leak current, the magnetic flux generated around the conductive wire from the power supply and the magnetic flux of the current in the returning wire cancel each other out, causing the clamp leak current meter to indicate a reading of 0. However, if there is a leak on the load side of the clamped conductor, there will be a difference between the magnetic flux of the outgoing current and the returning current, and the magnetic flux corresponding to this difference will be the current that is leaking on the load side. Similar leak current measurement can be performed for a 3-phase circuit by clamping all three wires at once.

Hioki USA   June 15, 2017  


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I measured the secondary side of an inverter with a 3285 (3284), but the measured value differs from the value displayed on the inverter.
The discrepancy with the inverter’s display value could be due to the following causes:
• The inverter may be displaying the primary-side current value.
• The value may be affected by inverter noise and harmonics.
• The difference may derive from the difference between RMS (true RMS) and MEAN (average rectified) measurement. (The 3285 uses RMS.)

Hioki USA   June 15, 2017  


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The 3281 and 3282 also have a peak function. Is it possible to capture the crest value for a rush current as with the 3284 and 3285?
Although the 3281 and 3282 offer peak hold capability through the combination of peak measurement and recording measurement, these instruments are not able to capture crest values 100% of the time. The 3281 updates the data every 250 ms. Measurement takes 128 ms, but calculation and display processing take up the remaining time, raising the possibility that a peak might be missed.

Hioki USA   June 15, 2017  


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The target current is very low with respect to the measurement range of my clamp-on tester. Do you have any recommendations as to how to measure such low current accurately?
We recommend making some turns of conductor around the clamp sensor before measuring.
For example, if the expected current is 1A, 2 turns will result in 2A, which can be better handled by a higher range meter because two current signals will be measured by the clamp.   Then simply take 1/2 of the reading to get the actual current of a single wire.

Hioki USA   May 15, 2019  


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I got different average values between the 3285 and CM4374.

The AVG value of the 3285 is calculated by "(MAX value + MIN value)/" as soon as REC starts.

On the other hand the CM4370 displays the average value of all measurement data obtained as soon as measurement starts.

[Applicable models]
3281, 3282, 3283, 3284, 3285, CM4371, CM4372, CM4373, CM4374

Hioki USA   July 25, 2019  


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What does "Effect of external magnetic field (at 400A/m)" mean in the specifications?

Effect of magnetic field shows the possibile effect on the measurement results when there is no input to the clamp on sensor under a 400A/m magnetic field environment.
When the current (I) flows, the magnetic field strength is equivalent to "I/2πr".
For example, specifications for the effects of a 400A/m magnetic field refers to the magnetic field strength emitting from 100A of current flow approximately 4cm from the conductor, based on the following calculation.

400[A/m]=100[A]/2πr
2πr=100/400
r=100/800π
≒0.0398[m]

Hioki USA   July 25, 2019  


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Can I use an AC flexible sensor with the 3280-10?

No, the 3280-10 and 3280-20 are not designed to use with an AC flexible sensor.
Their successor models 3280-10F and 3280-20F are designed to be connectible to the CT6280 flexible sensor to measure higher currents.

[Reference]
3280-70F:  Set of the 3280-10F and CT6280
3280-90F:  Set of the 3280-20F and CT6280

Hioki USA   July 25, 2019  


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I got a negative (-) power value on my clamp on power meter. What does it mean?
The clamp on sensors might be positioned in the reverese direction.
Please confirm if the arrow label (→) is oriented in the same direction as the flow of power from the power supply to the equipment being measured.

Hioki USA   July 25, 2019  


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Ground Resistance Testers | Phase Rotation Meters | Voltage Detectors

The Earth HiTester 3151 has frequency switch settings such as 3a and 3b. What are these? Which should I use in normal measurement?
Use of inverters that utilize semiconductor control elements has surged recently in manufacturing plants and other facilities, leading to an increase of cases in which leak currents flowing to grounding lines include not only fundamental components as in the past, but also numerous harmonic components. When measuring grounding lines that remain connected, for example during maintenance inspections, harmonic current leaking from equipment may prevent indicated values from stabilizing. Two frequencies are provided so that it is possible to limit interference with harmonic currents by switching the frequency being measured in such situations and thereby allow stable measurement (575 Hz and 600 Hz). If the indicated value fails to stabilize, try switching the frequency.

Hioki USA   June 15, 2017  


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Clamp on earth testers measure grounding resistance by clamping the ground line. How do they calculate the resistance value?
The clamp part of the Clamp On Earth Tester FT6380/FT6381 has a two-layer core that includes a voltage injector and a sensor to measure current. The clamp is applied to the measurement target’s grounding resistance Rx, and the voltage V is injected from the voltage injector. Using the constant voltage and measured current, the overall resistance of a loop with multiple groundings can be calculated with the following formula: Rx + 1/(1/R1 + 1/R2 + 1/R3 + 1/R4…) = V / I. *If the second term on the left side of the formula is sufficiently less than the first term (grounding electrodes are connected in parallel; when there are many grounding electrodes, the second term decreases the more grounding electrodes there are), Rx can be expressed as follows: Rx = V/I. The FT6380 and FT6381 can measure multiple groundings in which a single wire is grounded multiple times. Multiple groundings include structural groundings and groundings used at chemical plants and for communications. These instruments cannot be used to measure single or independent groundings such as those for which residential grounding electrodes are used.

Hioki USA   June 15, 2017  


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How can the contactless Phase Detector 3129 detect the phase without making contact with the conductor?
The Phase Detector 3129 uses a static induction voltage sensor. When clipped an insulated wire, this sensor can measure the voltage to earth by means of capacitive coupling, allowing the instrument to detect the voltage phase (R, S, or T), display a red lamp, and indicate the phase order. Unlike conventional phase detectors that had to be clipped directly to a live metal conductor, this product safely prevents contact and short-circuit accidents.

Hioki USA   June 15, 2017  


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My FT6031 displays "0Ω ADJ". Can I measure in this condition, or should I execute the zero adjustment?
"0Ω ADJ" is displayed on the FT6031 when zero adjustment is performed.  Please start measurement as is.

Hioki USA   July 25, 2019  


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Automatic Test Equipment (ATE)

Sorry, No FAQ Available!

Meter Relays

Is it possible to manufacture meter relays with a supply voltage other than 100 V AC?
In addition to the standard 100 V AC model, HIOKI can manufacture units with a supply voltage of 200 V AC if specified at the time of order. Supply voltages of 110 V AC, 120 V AC, 220 V AC, 230 V AC, 240 V AC, 12 V DC, and 24 V DC are also available by special order.

Hioki USA   June 15, 2017  


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Specialized Solutions

Sorry, No FAQ Available!

Other Electrical Measuring Instruments

Question

We are manufacturing and inspecting medical ventilators. Do you have any instruments that comply with safety standards for leakage current testing or insulation withstand voltage testing?

 

Answer

Hioki offers the following products to test the electrical safety of ventilators and other medical equipment:

ST5540 Leak Current HiTester:  complies with standards such as IEC60601-1 and JIST 0601-1
3157 AC Grounding HiTester: complies with IEC60601-1 and other safety electrical safety laws

3153 Automatic Insulation/Withstanding HiTester: test according to electrical safety laws and various safety standards
Other useful information:

Elliott Benzle   June 17, 2020  


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Question

We are manufacturing medical equipment such as ventilators, artificial cardiopulmonary devices and extracorporeal membrane oxygenation machines (ECMO). Do you have any instruments that comply with safety standards for leakage current testing (patient leakage current) or insulation withstand voltage testing?

 

Answer

To test the safety of medical equipment such as ventilators, artificial cardiopulmonary devices and ECMO, we recommend the Hioki ST5540 Leak Current HiTester, which complies with the IEC60601-1:(2005) 3rd Standard.
Learn more here

・Details about the ST5540
・Product Catalog

・ST5540 Leak Current HiTester User's Guide - Types of Patient Leakage Current and How to Test

・For more information about the ST5540, please contact us, or contact your local Hioki distributor.

Other Safety Tests
To verify the safety of medical devices, protective continuity testing (or earth continuity testing) is also necessary, as well as withstanding voltage testing.  For these tests, please consider the following Hioki products:

・3157 AC Grounding HiTester: complies with IEC60601-1 and other safety electrical safety laws

・3153 Automatic Insulation/Withstanding HiTester: test according to electrical safety laws and various safety standards
Hioki Electrical Safety Testing Equipment
 
 
Note:
Please consult with your medical equipment manufacturer for further details about and the difference between medical ventilators and ECMO.  Please also refer to the diagram below to understand the difference between a ventilator and ECMO.
 

Elliott Benzle   June 17, 2020  


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Question

I want to know more about measuring the leakage current of medical ventilators and other medical or electrical devices. Do you have any reference materials?

 

Answer

Elliott Benzle   June 17, 2020  


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Question

I have a Model 3156 Leak Current HiTester but it has malfunctioned. Can I have it repaired?

 

Answer

Model 3156 was discontinued in October 2010, as such, the end-of-life service period has completed and repair services are no longer available.  Please consider replacing the 3156 with the ST5540 Leak Current HiTester.  

More information about using our electrical safety equipment with medical devices can be found here.

Elliott Benzle   June 17, 2020  


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Question

Are test leads for discontinued insulation resistance meters still available?

 

Answer

To replace the test lead for the following discontinued insulation resistance meters, please use Model L9787 Test Lead.*

・3117/3118 MΩ HiTESTER
・3453 DIGITAL MΩ HiTESTER
・3454 Series DIGITAL MΩ HiTESTER

L9787 Test Lead is currently an optional test lead for Model IR4018 Analog MΩ HiTESTER, etc.
*As of April 2020

Elliott Benzle   June 17, 2020  


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Question

I am using the PW3360 Clamp On Power Logger. What do I do when the SD card's memory card has reached maximum capacity?

 

Answer

When the screen on the PW3360 Clamp On Logger is showing "File Error", that means that maximum number of files or folders saved has been reached and additional files can no longer be saved.  Please switch out the SD card with an empty one at this time.
On the discontinued 3169 Clamp On Power HiTester, the FULL icon will appear, and "Disk full" will also appear on the screen.
This also applies to the following instruments:
• 3169 Clamp On Power HiTester

Elliott Benzle   June 17, 2020  


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Question

Using the IR4057 Insulation Tester, I turned the switch to 1000V and pressed measure but nothing happened.

Answer

To prevent accidental application of high voltages such as 1000V or 500V, there is a safety release lock on the instrument.  When using the 500V/1000V range, please press the RELEASE button to deactivate the safety lock.
This applies to the following insulation testers:
Please refer the instructions below for more information.
myHIOKI
Seminars and
Product Training
Repair and Calibration
Caring for Your Product
Drivers, Firmware, Software
Windows Support
Document Library
Discontinued Products
FAQ

Elliott Benzle   June 17, 2020  


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Question

I'm trying to update the firmware on the MR6000 but the screen has remained the same for the past a few hours. What should I do?

 

Answer

The firmware update process for the MR6000 Memory HiCorder should normally take only about 30 minutes.  If the update does not finish in one hour, please go to "Technical Support" --> "Drivers, Firmware, Software", and enter "MR6000" in the search box.  Select "MR6000 Support for version upgrade" to get more instructions on what to do in such an event.

You may have to login to your myHioki account or register for a new account to gain access.

Elliott Benzle   June 17, 2020  


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Question

I want to use the Logger Utility software with the data I capture with the LR8431 Memory HiLogger on my Windows 10 PC. I tried to install the software using the supplied CD-ROM but it's not installing.

 

Answer

The CD-ROM you have may be out of date.  Please download the latest version of Logger Utility by going to "Technical Support" --> "Drivers, Firmware, Software", and entering "LR8431" in the "Model number" search box.  Click on "Logger Utility/Wireless Data Logger Collector..." to find the latest version of the software.  Click "Download" to obtain the latest version of the SF1000 Logger Utility application.
This also applies to the LR8410 Wireless Logging Station.

Elliott Benzle   June 17, 2020  


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Question

Can I measure multiple PV strings for insulation resistance simultaneously using the IR4053, rather than one at a time?

 

Answer

No, in general when using the IR4053 Insulation Tester for photovoltaic or PV testing, only one string can be measured at a time.
When attempting to measure multiple PV strings at the same time, the effect of lightning protection devices such as a blocking diode or surge absorber may prevent you from measuring the insulation resistance.  Please verify the design of the PV system.
If surge protective devices (SPD) such as surge absorbers are installed in the system or anywhere along the measured line, please remove them before measuring.

Elliott Benzle   June 17, 2020  


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Question

I would like to measure harmonics - what test tools do you recommend?

 

Answer

For simple harmonics measurement of current and voltage, we recommend the CM3286-01 Clamp On Power Meter and GENNECT Cross mobile app (free download).
To make more detailed measurements, we recommend Model PW3360-21 (with harmonic analysis function) which can measure up to the 40th order harmonics, or Model PW3365, which can analyze up to 13th order.  Models PQ3100 and PQ3198 Power Quality Analyzers can measure up to the 50th order.
In addition, the PQ3198 features an extra function which can measure up to 80kHz elements, also known as high-order harmonics.

Elliott Benzle   June 17, 2020  


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Question

After powering on the 3169, the recording interval which I had previously set to “30 minutes” changed to “5 minutes”. Why is this so?

 

Answer

The backup battery for clock and setting conditions on the 3169 has a 6-year lifecycle.  After the backup battery is depleted, settings for the clock and setting conditions revert to the default settings after the power is turned on.  However, measurement is not affected.  To change the backup battery, please contact your Hioki distributor or subsidiary for repair service.  The backup battery cannot be replaced by the customer.
For your information, the backup battery life for popular HIOKI products are as follows:
5 years:  MR8870, LR8431 series, LR8401 series, etc.
10 years: PW3360 series, PW3390, PW6001, PQ3100 series, LR8450 series, Memory HiCorders
Please refer to the instruction manual of each product for further details.

Elliott Benzle   June 17, 2020  


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