Portable megohmmeter 620MC

4-wirefor the aeronautical industry

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. The AMPTEC 620MC meter contains ranges from 20Ω to 2.0 MΩ. It is compatible with all of our 620-SERIES options, including our OP-232 RS232C Interface, OP-247 Optically Isolated Operating Power, and OP-519 Rack Mount Tray. 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