Specifi cations for the PFM-711A Electrostatic Field Meter
Overall Range
High Range 0 V to ±19.99 kV (at 1” distance):
Least signifi cant digit indicates volts at one inch (kV/in) in 10 Volt increments
Low Range 0 V to ±1,999 V (at 1” distance):
Least signifi cant digit indicates volts at one inch (V/in) in 1 Volt invrements.
Measures higher voltages at greater distances, e.g., at 2” double indicated voltage, at
4” multiply indicated voltage by four.
Instrument Tolerance
±5% from 0 V to 10 kV
Tolerance at > 10 kV depends on conditions and handling
Accuracy unaff ected by the presence of air ionization.
Note:
Performance when mounted in laboratory fi xture positionned 1 inch from a 6”x6” reference plate
Range Lights
Red “Bulls Eye” at 1” distance
Meter Display
3½ digit Liquid Crystal Display with 0.4” digit height.
Automatic polarity, HOLD and LOW BATTERY indicators
Response
Digital display updates three (3) times per second.
Analog Output Time Constant: Either Range 0.1 sec.
Display Time Constants:
High Range 0.2 sec.
Low Range 2.0 sec.
Output
Analog signal output and 30” two conductor cable provided.
±10.0 kV meter reading equals ±1.0 Volt output
Controls
Th
ree position slide switch: KV/INCH - OFF - V/INCH
Sample/HOLD push button, and ZERO adjust knob
Grounding
Meter circuit grounded through the conductive case and 10 mm snap fastener
mounted on back of case
Power
9 Volts alkaline battery.
Battery life minimum 40 hours
Dimension (LxWxH)
2.4” x 4.2” x 0.9” (6.1 cm x 10.7 cm x 2.3cm)
1.3” deep with zero knob and snap fastener (3.3 cm)
Weight
5 oz with battery installed (142g)
10
Rev. D / October 4, 2018
PFM-711A Electrosta c Field Meter
