620LK-P5 | Intrinsically Safe Ground Continuity Tester
October 19, 2016
641RS | Compact Ruggedized Failsafe Igniter Tester with Self-Test Feature
October 20, 2016
641N | Compact Ruggedized Failsafe Ohmmeter with Self-Test Feature
The AMPTEC 641N Igniter Tester was designed for military ordnance programs as a ruggedized product that can safely measure resistance on explosive devices such as squibs, flares, and explosive bridge wire. The 641N meter is an impressive 40% lighter and significantly more intelligent than its predecessor the 640N (thanks to the introduction of the self-test function). With multiple safety approvals, a durable/waterproof yet compact case, self-contained DC milliammeter and test resistors, a shielded Faraday cage design, and the new self-test feature, the 641N is among the safest and smartest products of its kind.
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Specifications
| Range | 2 Ω | 20 Ω | 200 Ω | 2K Ω | 20K Ω | 200K Ω | 2M Ω |
|---|---|---|---|---|---|---|---|
| Nominal Current | 5 mA | 5 mA | .5 mA | 50 uA | 5 uA | .5 uA | 50 nA |
| Failsafe Current | 8 mA | 8 mA | 1.5 uA | 150 uA | 15 uA | 1.5 uA | 15 uA |
| Resolution | 100 uΩ | 1 mΩ | 10 mΩ | 100 mΩ | 1 Ω | 10 Ω | 100 Ω |
| Accuracy | ± .02% of reading & range | ± .02% of reading & range | ± .02% of reading & range | ± .02% of reading & range | ± .02% of reading & range | ± .02% of reading & range | ± 1% of reading, ± 0.2% range |
| Display | 4 1/2 digit LED | Terminal | Trident |
|---|---|---|---|
| Temperature Coefficient | ± .002% per 1°C | Operating Temperature Range | 0° to 50° C |
| Dimensions | 10.62″ x 9.68″ x 4.87″ | Weight | 6.5 lbs. |
| Power | 4 ea rechargeable 5AH NICAD batteries | Max Input Voltage | 250 VDC |
| Open Circuit | 1.6 VDC | Max Failsafe Current | 8 mA |
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