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Model No. ES-9080
Basic Electrostatics System
13
deflection (e.g., a setting of 30 means that a full-scale meter
deflection indicates a voltage of 30 volts).
Important Points for General Operation:
1.
Between measurements, always press the
Zero
button to discharge all
current from the electrometer.
2.
Shorting the test leads together is insufficient. There may still be
stray charges within the electrometer circuitry.
3.
For good results, it is essential that the electrometer be connected to
an earth ground (a water pipe or the ground wire from a 120 VAC
socket). Only an earth ground provides a sufficient drain for excess
charges that may build up during an experiment. It is also helpful if
the experimenter is grounded. Just touch one hand to a good earth
ground just before, or during measurements.
More information on taking accurate measurements is provided in the
demonstrations on pages 14-34.