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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.
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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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