4ch micro current model – perfect for automated-systems integration
SUPER MEGOHM METER SM7420
The Hioki SM Series Super Megohm Meters are high resistance and ultra low current inspection devices with a 0.1 fA resolution to offer precise testing on production lines. The SM7420 is industry's fastest 4-channel simultaneous super megohm meter that supports applications for improving the productivity of passive components such as capacitors and filters.
• 300 times better noise resistance
• 6000 ps/minute - ideal for mass production
• Channel-independent low capacity contact check
• Perfect for equipping on automated machines
• Max. 2 × 10^19 Ω display
• Min. 0.1 fA resolution
• Built-in EXT I/O, RS-232C, GP-IB and USB
4CH Microcurrent Measurement SUPER MEGOHM METER SM7420
Characteristics of the MLCC Leakage Current Test System
This high-speed test system combines the 4ch microcurrent SUPER MEGOHM METER SM7420 with an external power source, or the 8ch SUPER MEGOHM METER SM7810, developed for leakage current tests, with a 32ch output POWER SUPPLY UNIT SM7860.
Perfect for equipping on automated machines, use this to construct the fastest MLCC leakage current inspection line.
High-Performance Contact Checks
[Low capacity contact checks]
The SM7420 is equipped with contact checks that can identify low-capacity capacitors of only a few pF as well as measured objects with a small capacitance.
(Reference value: 0.1 pF to 99.99 pF)
[CH independent contact checks]
The SM7420 using an external power source enables check frequencies and delay settings to be changed for each measurement channel, achieving detailed settings that match the line design.
1/60 Variability, 300x Noise Resistance
Stability (repeatability) against power supply noise and external noise has improved dramatically due to a combination of new Super Megohm floating circuitry and triaxial connectors.
Variability in normal usage environments is reduced to 1/60 compared to previous models, and to 1/300* in conditions where 50 V noise is applied.
Basic specifications (Accuracy guaranteed for 1 year, Post-adjustment accuracy guaranteed for 1 year)
|Number of channels||4ch|
|DC current measurement||20 pA range (0.1 fA resolution), Accuracy: ±(2.0 % of rdg. +30 dgt.)
200 pA range (1.0 fA resolution), Accuracy: ±(1.0 % of rdg. +30 dgt.)
2 nA range (10 fA resolution), Accuracy: ±(0.5 % of rdg. +20 dgt.)
20 nA range (100 fA resolution), Accuracy: ±(0.5 % of rdg. +10 dgt.)
200 nA range (1 pA resolution), Accuracy: ±(0.5 % of rdg. +10 dgt.)
2 μA range (10 pA resolution), Accuracy: ±(0.5 % of rdg. +10 dgt.)
20 μA range (100 pA resolution), Accuracy: ±(0.5 % of rdg. +10 dgt.)
200 μA range (1 nA resolution), Accuracy: ±(0.5 % of rdg. +10 dgt.)
*2 mA range (1 nA resolution), Accuracy: ±(0.5 % of rdg. +30 dgt.)
(1) Measurement speed SLOW2 (internal integration time 13PLC)
(2) At a temperature of 23 °C ±5 °C with humidity of 85% rh
(3) 2 mA range (Measurement speed FAST only)
|Resistance measurement capabilities||50 Ω to 2 × 10 ^19 Ω
Note: Resistance measurement accuracy is defined by the current range accuracy and voltage setting accuracy.
|Measurement time setting||Delay: 0 to 9,999 msec|
|Functions||CH independent low capacity contact checks, CH independent cable length correction, CH independent jig capacity open compensation, comparator|
|Display||LCD (8 lines of 30 characters), with backlight, high voltage warning indicator|
|Interfaces||USB, RS-232C, or , GP-IB|
|Power supply||100 to 240V AC , 50/60 Hz, 45 VA|
|Dimensions and mass||330 mm (12.99 in)W × 80 mm (3.15 in)H × 450 mm (17.72 in)D, 6.5 kg (229.3 oz)|
|Accessories||Power cord ×1, Instruction manual ×1, CD-R (Communications command instruction manual, USB driver) ×1, EXT I/O male connector ×1|