Industrial Grade Spark Tester consists of a solenoid and an interrupter which has natural high frequency and when the current passes through the solenoid, the hammer is attracted by its core, thereby breaking the circuit and at the same time charging the condenser. The Tester has a hammer that springs back reforming the contact and allowing the condenser to discharge through an inductance of a few turns of thick wire. The Tester is useful in detecting faulty lining of vessels or tanks etc, or faulty insulation of cables, or for the detection of leaks and cracks in high vacuum systems, scientific and laboratory glass apparatus. The Industrial Grade Spark Tester has the feature that when metal rod brought within 1 cm of the lining of the tank or any other vessel, produces a diffused spray discharge, but if there is a minute crack, or microscopic hole in the lining, whether it be glass or rubber or PVC or any other insulation, this diffused discharge is concentrated into a bright spark passing through the hole or crack.
