WILCOM T124 BOND CHECKER METER REPAIRED

WILCOM T124 BOND CHECKER METER REPAIRED Wilcom Model T124 Cable Shield Splice Continuity Tester is an accurate measuring device which provides measurement of the conditions existing at cable shield splices, checks the integrity of ground connection, and checks the condition of capacitors across insulated splices. Two probes, capacitively coupled to the shield of the cable under test, are connected to very high-input impedance amplifiers contained in the probe assemblies. The outputs of the two amplifiers are fed through a cable to a balanced transformer circuit in a measuring set. The measuring set is connected to any stable ground. When the two probes are placed on the same section of cable, the two signals generate a very low level reading on the measuring set; this reading is taken as a reference. The probes are then placed across a splice. If the shield splice is good, the two probes pick up the same signal level, and the reading on the measuring set equals the reference previously measured. If the splice bonding is defective, a higher reading is observed on the meter. The difference between the reference reading and the reading across the splice is an indication of the nature of the fault. A key switch is provided to permit measurement of the voltage to ground picked up by each probe. The two voltages should be equal if the splice is good, and different if the splice is defective. This feature makes the set useful for identifying the nature of a variety of faults in splices, and also for checking ground connections. A clamp is attached to the back of the measuring set to permit attachment to a 1 1/4" diameter pole (lay-up stick). If a lay-up stick is used, one person can apply the probes to the cable from the ground and also take the readings on the set.