Ultra-Safe Automated Resistance Measurements

The AMPTEC 620 series Explosive Safety Igniter Circuit Testers have now introduced the latest remote controllable  and automated measuring (optically and magnetically isolated RS-232C interface ) failsafe ohmmeter model. The AMPTEC 620RK is a failsafe ohmmeter specifically designed for ultra-safe resistance testing on explosive devices (i.e. squibs, igniters, flares, detonators). 

The AMPTEC 620RK Explosive Safety Igniter Tester can be safely operated 24 Hrs/7Day without batteries. It’s proven “Medical Safety 3KV Isolated Supply ” technology is the same used in monitoring human patients wired to electrical instrumentation.  The AMPTEC 620RK automated Igniter Circuit Tester is presently running in dozens of U.S. Anti-Ballistic Missile systems(24Hrs/7).  It can be remote controlled (i.e. PLC or PC) to change to a given resistance range, safely take squib readings and then send them over the unit’s optically isolated RS232C serial interface to a PLC or PC. 

Proven Results

The AMPTEC 620RK resistance measurement circuitry uses the same failsafe current source as the USAF Non-Nuclear Munition Safety Board approved AMPTEC 620A-4 Igniter Tester (the defacto standard Igniter Tester for the USAF).  Its current source is also the same circuitry used by the US NAVY Ordnance Safete Board Approved AMPTEC 630BN ICT on NAVY “Submarine Launched Cruise Missile warhead and rocketmotor squibs”.

Gold plated 4 terminal Kelvin rear terminal Inputs are wired in parallel with the unit’s front terminals come standard with AMPTEC 620RK.  If a “2 wire ohms” connection is made then the V high and I high terminals should be shorted together, and the V low and I low terminals should be shorted.  For safety reasons, the unit’s rear panel DC power supply input (raw DCV) is then internally electrically isolated/conditioned to 3.0 KV. The unit’s Safety Board Approved failsafe ohmmeter current source is still running independent of the meter’s 3.0 KV DC supply isolation circuitry. For a data sheet of all the accessories, test leads, probes and options that are compatible with the AMPTEC 601ES DMM, 620A-4, 620BH, 620ES, 620GD, 620RK etc select here.