ACT Meters Ltd – VERIFIER Cable Tracer, Resistance Tester & Fault Finder

Designed specifically for testing security and fire alarm installations, VERIFIER uses sound technology to allow engineers to walk-test an installation and simply ‘listen out’ for and trace hidden cables, test resistance devices and locate circuit faults first time.

VERIFIER works by passing an audible tone through the cables and devices connected to the circuit under test. This tone is then picked up by the supplied inductive amplifier. When testing cables, it enables the engineer to listen out for, find and follow hidden cables behind plaster, under carpet, beneath floorboards or above ceilings. Cables can be identified from up to 1 meter away, with the tone becoming loader as it comes in closer contact with.

Also, the tone generated by VERIFIER varies in pitch according to the resistance of the circuit. Any cable resistance fault, short or break can be heard by a change of tone, with induced EMI and RFI being identified by a sound change.

VERIFIER also passes this same ‘resistance sensitive’ audible tone through devices connected to the circuit. As the resistance increases, so does the tone. This has numerous benefits such as identifying devices connected to unmarked cables. By operating each device in turn, a change in tone will occur. Good and faulty magnetic contacts may also be identified easily. On a normal contact the tone will cleanly switch from low to high, but on a faulty contact, the tone will vary in pitch from low to high. By moving the magnet slowly away from the contact, the tone will verify any normal or faulty contact and also test the magnet strength.

Other benefits include verifying the sensitivity adjustment of shock sensors, test operation and sensitivity of PIR motion detectors and verify joint box tamper resistance. Any distorted changes in pitch will identify problems during these tests.