1. Cleaning the PFM-711A Case & Display
Clean the meter case and display lens with a dry, so non-scratching cloth.
a. DO NOT USE SOLUTION TO WET THE CASE, DISPLAY OR CONTROLS.
b. Carefully wipe the case and display un l dust and dirt are removed.
USER CAUTION
In rare cases cleaning the PFM-711A, case and display with a slightly dampened cloth
may be required. Should this be required, use a very weak solu on of liquid soap and water.
The cloth should be barely damp. DO NOT allow the instrument to become wet with the
cleaning solu on. DO NOT allow cleaning solu on to enter the unit through control or circuit
zero adjustment openings. Should the unit become damaged with cleaning solu ons, the
warranty is voided.
2. Adjus ng PFM-711A Field Meter Front Panel Zero to Range.
The front Black panel
Zero
knob (r16) adjustment range is less than a full turn. Occasionally, it
may need to be adjusted to its midpoint due to environmental temperature varia ons.
a. Select the
kV/inch
range using the three posi on Range/Power opera on switch (s1).
b. Turn the Black Panel knob (r16) fully counter clockwise.
c. Using a small blade screwdriver, adjust the Internal calibra on adjustment (r27) (located
next to
Zero
Knob) un l the display reads “-1.60 kV/inch”.
d. Rotate the Black Panel
Zero
Knob (r16) fully clockwise. The display should indicate approxi-
1.60 (+/-0.10) kV/inch.
e. Rotate the Black Panel
Zero
Knob (r16) to mid posi on, approximately ½ turn, un l the
display indicates 0.00.
f. This completes the Black Panel
Zero
Knob (r16) adjustment
9
Rev. D / October 4, 2018
PFM-711A Electrosta c Field Meter
