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Home | Products | Explosive Bridge Wire Testing | 620A-4R | Ruggedized Digital Failsafe Ohmmeter

The AMPTEC 620A-4R Igniter Tester was designed to be a ruggedized version of its predecessor, the 620A-4 meter. The 620A-4R contains the same inner circuitry as the ultra-safe 620A-4, with the added bonus of protection in harsh environments, an internal Faraday cage for noise immunity, and a wide-viewing angled display. This product is widely used by both military programs and commercial clients who require a weather-proof failsafe igniter tester.
 

Description

Range20 Ω200 Ω2K Ω20K Ω
Nominal Current5 mA500 uA50 uA5 uA
Failsafe Current8 mA1.5 mA150 uA15 uA
Resolution1 mΩ10 mΩ100 mΩ1 Ω
Accuracy± .02% of reading & range± .02% of reading & range± .02% of reading & range± .02% of reading & range
Display4 1/2 digit LEDTerminalsBanana jack binding posts
Storage Temperature Range-10° to 70° COperating Temperature Range0° to 50° C
Dimensions13.37″ x 11.62″ x 6″Weight9.5 lbs.
Power4 ea rechargeable 5AHr NICAD batteriesMax. Input Voltage250 VDC
Open Circuit1.6 VDCMax. Internal Voltage15 VDC
Update3 readings/secondTemperature Coefficient± 0.1 x accuracy per 1° C

Additional information

Weight5 lbs
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Range20 Ω200 Ω2K Ω20K Ω
Nominal Current5 mA500 uA50 uA5 uA
Failsafe Current8 mA1.5 mA150 uA15 uA
Resolution1 mΩ10 mΩ100 mΩ1 Ω
Accuracy± .02% of reading & range± .02% of reading & range± .02% of reading & range± .02% of reading & range
Display4 1/2 digit LEDTerminalsBanana jack binding posts
Storage Temperature Range-10° to 70° COperating Temperature Range0° to 50° C
Dimensions13.37″ x 11.62″ x 6″Weight9.5 lbs.
Power4 ea rechargeable 5AHr NICAD batteriesMax. Input Voltage250 VDC
Open Circuit1.6 VDCMax. Internal Voltage15 VDC
Update3 readings/secondTemperature Coefficient± 0.1 x accuracy per 1° C

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