SAMPLE/HOLD
push bu on switch has two posi ons: depressing the bu on latches it into
the lower Sample posi on. Pressing it again releases it into its upper
HOLD
posi on. The
ZERO
knob may be turned to the le or right to change the zero se ng of the display. The unit must
be operated while grounded.
7. Turning The PFM-711A Field Meter ON and OFF
Push the slide switch
RANGE/POWER
(s1) to its upper posi on (towards the display) to select
kV/inch
. The display will come ON, a decimal point will be displayed, and the meter will mea-
sure up to 19.99kV at one inch in 10 volt increments. Placing the slide switch in the lower posi-
on will select
V/inch
. There will be no decimal point in the display and the meter will measure
up to 1999 volts at one inch, in one volt increments. Moving the switch to its center posi on
will turn the meter
OFF
.
8. Zero The PFM-711A Field Meter
Ground the case by wearing a func onal wrist strap that is properly grounded. Turn the meter
on by selec ng the desired range. Press the
SAMPLE/HOLD
bu on down so that it latches in
the lower or
SAMPLE
posi on, and
HOLD
is not indicated in the meter display. Adjust the dis-
play to zero (0) volts by rota ng the
ZERO
control.
IMPORTANT:
The PFM-711A meter case is conduc ve. It provides the ground reference for
its measuring circuit. For accurate measurements, it is necessary that the person holding the
meter be properly grounded, or the meter has a ground connec on made to the metal snap on
the case.
9. Take An Electrosta c Field Measurement with the PFM711-A Field Meter
Turn the meter
ON
to the desired range. Hold the front of the meter approximately one inch
from the surface to be measured. Adjust the distance from the test surface un l the RED rang-
ing lights form a Bull’s Eye. Allow the instrument to stabilize. Record the Measurement.
10. HOLD A PFM-711A Measurement
With the meter in the measurement posi on described above, press the
SAMPLE/HOLD
but-
ton so that it latches in the upper or hold posi on. This will freeze the reading on the display,
allowing the meter to be moved to a posi on where it may be more easily read and document-
ed. When the meter is in the
HOLD
posi on, the word “
HOLD
” will appear In the display.
VI. Maintenance & User Adjustment
A. The PFM-711A is factory calibrated and other than ba ery replacement, external cleaning, and oc-
casional adjustment of the front panel
Zero
knob range posi on, general user maintenance is not
required. The case has been sealed and
BREAKING THE SEALS WILL VOID THE WARRANTY
. If for
any reason you believe the meter is not working correctly, contact Prostat Corpora on for assis-
tance.
USER CAUTION
Other than ba ery replacement & front panel zero range adjustment, there are no
user serviceable parts. Any unauthorized service will void the warranty and result in
addi onal repair charges.
8
Rev. D / October 4, 2018
PFM-711A Electrosta c Field Meter
