
Range
Scale to read
Multiplied by
2.5 V
0 - 2 . 5
1
10V
0 - 10
1
50V
0 - 50
1
250V
0 - 250
1
1000 V
0 - 10
100
3
Internal Resistance of a Voltage Range.
Voltage is measured applying the test leads in parallel
with the power. Current energy (current consumption
of a voltmeter) can cause the pointer to give erroneous
reading.
Current consumption is inversely proportional to the
internal resistance of the meter: the bigger the resistance,
the less the current consumption.
As a rule, the internal resistance of a voltmeter is ex
pressed by resistance per volt using the symbol of „Q/V.
Therefore, the internal resistance of a certain voltage
range is known by the voltage value multiplied by the
Q/V
of the meter.
For instance, the overall internal
resistance of the
U-50o
being 20,000 ohms per volt for
— 14 —
Содержание U-50D
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