kewtechcorp.com
10
kewtechcorp.com
Continuity Test Function
Caution
If accidentally connected to a live circuit the Red warning LED will flash, a rising
siren type alarm will sound and testing will be inhibited. If this happens disconnect
the probes from the circuit and isolate the circuit before continuing.
The tester is protected against being damaged by accidental connection to a live
circuit but for personal safety it is essential to ensure that the circuit is dead before
working on it.
Continuity Test Procedure
Fit the Brown test lead from the ACC063 set into the Brown/Red(+) input terminal and the Blue
lead into the Blue/Black (-) input terminal. Fit either the test prod or crocodile clip to the other
end of the test lead.
Select the Continuity test function by rotating the selection switch to the ‘CONTINUITY’ setting.
Lead Nulling
The purpose of continuity testing is to establish the resistance of the circuit under test.
However the continuity test function will measure the overall resistance of the circuit between
the two input terminals on the tester, this will include the resistance of the test leads, an
element that is not wanted in the final result. Traditionally this would mean that the resistance
of the test leads would have to be measured and manually deducted from each subsequent
reading. The KT63DL has a handy feature known as lead nulling that does this calculation for
you.
To use the lead nulling feature hold the tips of the test prods very firmly together (or clip the
jaws of the crocodile clips together) and press the ‘CONTINUITY NULL’ button on the tester.
This will start a measurement of the resistance of the pair of test leads and display the result.
NULLING CROC CLIPS AND PRODS
Note: The two lower static jaws of the crocodile clips should contact each other when nulling.
Prods should be held very firmly together.
