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28 II Ex
Users Manual
24
How to Use Conductance for High Resistance or
Leakage Tests
Conductance, the inverse of resistance, is a measure of
how easily current goes through a circuit. High values of
conductance are the same as low values of resistance.
The 60-nS range of the Product measures conductance
in nanosiemens (1 nS = 0.000000001 siemens). Because
such small quantities of conductance are equal to very
high resistance, the nS range lets you measure the
resistance of components with a maximum of
100,000 MΩ, 1/1 nS = 1,000 MΩ.
To measure conductance, set up the Product for
resistance measurement as shown in Figure 5, then push
C until the nS indicator shows in the display.
Some guidelines for conductance measurements are:
• High-resistance measurements are susceptible to
electrical noise. To smooth out most noisy
measurements, start the MIN MAX recording mode;
then step to the average (AVG) reading.
• It is usual to have a conductance measurement in
the display with the test leads open. To make sure
you make accurate measurements, use the relative
(REL) mode to subtract this open measurement
value.
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