Prostat PFM-711A, Руководство пользователя

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b. Cycle the SAMPLE/HOLD bu on (s2) by pushing it a few mes; note the HOLD indica on
on the meter’s display. Release SAMPLE/HOLD so that the meter is free to measure fi elds.
c. Hold a fl at sheet of material in front of the meter’s sensing plate to confi rm opera on of
the red ranging Bull’s Eye light system. A circle with a spot in the middle should clearly ap-
pear on the material surface when held one inch from the meter’s sensing plate.
d. Point the unit away from surfaces and objects, and rotate the Black Panel (r16) ZERO knob
un l the display indicates 0.00
e. Experiment with the meter by measuring the surface of a charged material.
f. Slide the three way RANGE/POWER Switch (s1) to the V/inch posi on. Allow the display to
se le to a stable indica on; this should require four to eight seconds.
g. Point the unit away from surfaces and objects, and rotate the Black Panel ZERO knob (r16)
un l the display indicates 000.
h. Experiment with the meter by measuring the surface of a charged material.
OPERATIONAL NOTE
The case of PFM-711A Field Meter is conduc ve and part of the instrument’s
grounding circuit. If one holds the meter in one hand, and a empts to measure
voltage on the other hand, no reading can be obtained regardless of body voltage.
C. Confi rming PFM-711A Field Meter Analog Func on.
1. Connect the analog cable to the PFM-711A kV/inch output jack.
2. Connect the RED output banana plug to the Posi ve (+) input of an X-Y plo er or digital Mul -
meter (DMM).
3. Connect the BLACK output banana plug to the Nega ve (-) input of the X-Y plo er or Mul me-
ter (DMM).
When the PFM-711A displays 1,000 volts, the analog should be approximately 0.1 volts.
IV. Applica on
The PFM-711A Field Meter is an accurate electrosta c fi eld measuring device. Used by itself, the PFM-
711A will measure electrosta c fi elds emana ng from virtually any fl at surface or object. In
V/inch mode,
the digital display covers the range of 0 ±1999 volts in one volt increments. In kV/inch mode, it covers the
range of 10 volts to 20kV in ten volt increments at one inch distance from the charged surface.
V. General Opera on
A. Field Measurements using the PFM-711A Field Meter
1. Before opera ng the PFM-711A, the operator should select and wear a fully func onal wrist
strap that is properly grounded.
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Rev. D / October 4, 2018
PFM-711A Electrosta c Field Meter