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Figure 3. Operator properly grounded to use the PFM-711B
OPERATIONAL NOTE
The case of PFM-711B Field Meter is conductive and part of the instrument’s grounding circuit. If
one holds the meter in one hand, and attempts to measure voltage on the other hand, no reading
can be obtained regardless of body voltage.
CPM-720B Charge Plate Assembly
The CPM-720B Charge Plate Assembly is a miniature isolated plate attachment for the PFM-711B
Field Meter. It converts the PFM-711B into a portable, battery operated charged plate monitor (CPM).
This unique design allows precision balancing of ionizing blowers and other devices to less than ±5
volts accuracy.
When used with auxiliary leads or wrist strap, the CPM-720B measures body voltage and equipment
charge generation.
Grounding Snap on the
back of the PFM-711B
Wrist Strap
