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620MC | Wide Range Digital Failsafe Ohmmeter

The AMPTEC 620MC failsafe ohmmeter was specifically designed for ultra-safe testing on squibs, flares, bridge-wire, and other explosive devices. The 620MC meets wide-range resistance requirements and offers a fail-safe current limiting resistor network circuitry to ensure 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.

This item is not available for purchase through our website. Please contact us for more information.

Specifications

 

Range 20 Ω 200 Ω 2 KΩ 200 KΩ 20 MΩ
Nominal Current 5 mA 0.5 uA 50 uA 0.5 uA 0.010 uA
Failsafe Current 8 mA 1.5 uA 150 uA 1.5 uA 0.015 uA
Resolution 1 mΩ 10 mΩ 100 mΩ 10 Ω 1 KΩ
Accuracy ± .02% of reading & range ± .02% of reading & range ± .02% of reading & range ± .05% of reading & range ± 2% of reading; ± 0.2% of range
Display 4 1/2 digit LED Terminals 4-wire Kelvin
Storage Temperature Range -10° to 70° C Operating Temperature Range 0° to 50° C
Dimensions 9.75″ x 10″ x 3.25″ Weight 3 lbs.
Power 4 ea rechargeable 5AHr NICAD batteries Max. Input Voltage 250 VDC
Open Circuit 1.6 VDC Max. Internal Voltage 4.8 VDC
Update 3 readings/second Temperature Coefficient ± .002% per 1° C
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Please note that due to a significant backlog, any orders for instrumentation which need to be shipped from our facility by the end of 2021 must be placed by October 8, 2021. We apologize for any inconvenience this may cause.