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620EH | Mid Range Failsafe Igniter Tester

The AMPTEC 620EH failsafe ohmmeter was specifically designed for ultra-safe testing on squibs, flares, bridge-wire, and other explosive devices. The 620EH meets mid-range resistance requirements and offers a fail-safe current limiting resistor network circuitry to insure test currents cannot exceed 8 mA. This product was derived from the USAF Non-Nuclear Munitions Safety Board approved AMPTEC 620A-4 meter – thus creating a product line that is the industry standard in igniter testing.


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Range 2 Ω 20 Ω 200 Ω 2M Ω
Nominal Current 5 mA 5 uA 50 uA 5 uA
Failsafe Current 8 mA 8 uA 1.5 uA 15 uA
Resolution 100 uΩ 1 mΩ 10 mΩ 100 Ω
Accuracy ± .02% of reading & ± .05% of range ± .02% of reading & range ± .02% of reading & range ± 1% of reading & ± .2% of range
Display 4 1/2 digit LED Terminals 4-wire Kelvin
Accurate Temperature Range 0° to 50° C Update 3/sec.
Temperature Coefficient ± .002% per 15° C Operating Temperature Range 0° to 50° C
Dimensions 9″ x 10″ x 3″ Weight 8 lbs.
Power 4 ea rechargeable 5AH NICAD batteries Max. Input Voltage 250 VDC
Open Circuit 1.6 VDC Max. Failsafe Current 8 mA
Ordering Information

This product is unavailable for online purchase. For specific pricing information or to place an order for a 620EH failsafe ohmmeter, please contact us today.

Product Description Price
620EH Includes 620EH failsafe ohmmeter, (OP-300) lead set, (620-DC) battery charger, & U.S. N.I.S.T Calibration Certificate. Request a quote!
Lead/Probe Sets The 620EH ohmmeter is compatible with our 620 Series probe/lead sets and accessories.