METREL EurotestPV Lite, Инструкция по эксплуатации

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MI 3109 EurotestPV Lite Measurements
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
Connect PV continuity test lead to the instrument.

Compensate test leads resistance (if necessary, see section 5.2.3 ).

Disconnect from mains supply and discharge the object to be tested.

Connect test leads to the tested object (see Figure 5.8).

Press the TEST key to begin performing a continuous measurement.

Press the TEST key to stop measurement.

Store the result by pressing the MEM key (optional).
Figure 5.9: Example of continuous resistance measurement
Displayed result:
R............resistance
U:............ actual voltage on test inputs
5.2.3 Compensation of test leads resistance
This chapter describes how to compensate the test leads resistance in both continuity
functions, R LOW
Ω and CONTINUITY. Compensation is required to eliminate the
influence of test leads resistance and the internal resistances of the instrument on the
measured resistance. The lead compensation is therefore a very important feature to
obtain correct result.
symbol is displayed if the compensation was carried out successfully.
Circuits for compensating the resistance of test leads
Figure 5.10: Shorted test leads
Compensation of test leads resistance procedure

Select R LOW
Ω
or CONTINUITY function.

Connect Continuity PV test lead to the instrument and short the test leads
together (see Figure 5.10).

Press TEST to perform resistance measurement.

Press the CAL key to compensate leads resistance.