AMPTEC 620LM Intrinsically Safe System’s Igniter Tester Ohmmeter  The AMPTEC 620LM Safety Igniter Tester is an ATE System’s dedicated portable digital ohmmeter specifically designed for ultra-safe resistance in circuit testing on squibs, igniters, flares, and other explosive devices. AMPTEC’s 620LM provides ultra-safe measurements for THAAD related ordnances. With a built-in