3
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
I. Introduc on
The PFM-711A is an accurate, compact electrosta c fi eldmeter used for loca ng and measuring sta c
charge poten als. The Charge Plate Assembly CPM-720A allows the PFM-711A to be used to balance
& Monitor air ioniza on equipment, and generally func on as a Charge Plate Monitor (CPM). Using
the PCS-730 Charging Source, decay performance of ionizers, materials and other equipment may be
measured. Many other types of electrosta c measurements may also be made using the PFM-711A
and its accessories.
A. The PFM-711A features
SAMPLE
and
HOLD
measurement modes that allow measurements to be
made in places that would be diffi
cult to reach or see with other instruments.
1. When using the CPM-720A Charge Plate Assembly, the
SAMPLE
and
HOLD
feature is useful for
obtaining accurate readings.
2. Note that all isolated plates will discharge over me, and the
HOLD
feature will retain the de-
vice’s reading.
B. Range switching is provided with the PFM-711A. 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
19,990kV in ten volt increments.
1. An analog output jack provides a 1 volt output corresponding to 10kV, which is independent of
the range selected and meter indica on.
2. The circuitry is a digital, electronic chopper design and subsequently, the instrument is useful
for making electrosta c fi eld measurements in areas where ionized air is present.
3. For accurate, repeatable performance, the PFM-711A must be grounded during normal opera-
ons.
C. The CPM-720A Charge Plate Assembly has been designed specifi cally to match the small size and
handheld convenience of the PFM-711A fi eldmeter. It has been conceived as closely as possible to
conform to the guidelines of ANSI/ESD STM3.1 air ioniza on standard.
1. Because of small size, the Charge Plate Assembly CPM-720A does not meet the requirement of
the EOS/ESD-S3.1 air ioniza on standard for 20pF plate assembly capacitance.
2. The CPM-720A capacitance is approximately 15.6 to 15.8pF. The performance of the CPM-
720A correla on to a 6 inch charge plate monitor such as the CPM-760A which meets ANSI/
ESD STM3.1 air ioniza on standard, is as follows:
Summary of Contents for PFK-100
Page 1: ...User Manual PFK 100 FIELD METER SET ...
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Page 25: ...NOTES 25 Rev 6 July 16 2020 PFK 100 Field Meter Set ...
Page 26: ...NOTES 26 Rev 6 July 16 2020 PFM 100 Field Meter Set ...
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