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1. One parallel plate assembly equipped with Teflon insulators between parallel plates:
a. Upper plate is a square sensing plate equipped with a banana receptacle.
b. Bottom plate is a ground reference plate, notched and sized for attachment to the
PFM-711B.
2. A Teflon wedge s installed beneath the square upper plate for separation between the CPM-
720B sensing plate and the PFM-711B Field Meter case.
3. One female metal banana plug receptacle is installed on the sensing (upper) plate.
4. A calibration adjustment screw and nut assembly is installed beneath the upper plate,
between the sensing and notched ground plates.
NOTE
Each CPM-720B is calibrated at the factory to match its respective PFM-711B Field Meter. Do not
modify the CPM-720B calibration adjustment without following factory Calibration procedure.
Matched PFM-711B and CPM-720B units have the same serial numbers. Do not interchange.
Mounting the Charge Plate Monitor Assembly
5. With the PFM-711B Field Meter controls and the CPM-720B sensing plate facing up (the lower
plate has a cutout for the meter), carefully slide the CPM-720B’s lower ground plate into the
lower mounting grooves molded into the sides of the PFM-711B’s case (Figure 4).
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