Portable megohmmeter 620MG

4-wirefor the aeronautical industry

The AMPTEC 620MG failsafe ohmmeter was specifically designed for ultra-safe testing on squibs, flares, bridge-wire, and other explosive devices. The 620MG meets a wide-range of resistance requirements, and comes standard with an (OP-232) RS232C interface, (OP-247) optically isolated power, an autorange feature, and a diode test capability. 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. Nominal Current - 5 mA - 5 mA - 500 uA - 50 uA - 5 uA - .5 uA - 0.5 uA Failsafe Current - 8 mA - 8 mA - 8 mA - 8 mA - 8 mA - 8 mA - 8 mA Resolution - 0.1 mΩ - 1 mΩ - 10 mΩ - .1 Ω - 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 & ± .05% of range - ± 1% of reading & ± .2% of range Display - 4 1/2 digit LED - Terminals - 4-wire Kelvin Temperature Coefficient - ± .002% per 1° C - Update - 3/sec. Storage Temperature Range - -10° to 70° C - Operating Temperature Range - 0° to 50° C Dimensions - 9″ x 9″ x 3″ - Weight - 4 lbs. Power - Optically isolated continuous power - Max. Input Voltage - 250 VDC Open Circuit - 1.6 VDC - Max. Failsafe Current - 8 mA