Prostat PFK-100 User manual

User Manual
PFK-100
FIELD METER SET

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:

4Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
Hand Held by Grounded Operator (Table 1)
12 inches 18 inches 24 inches
(+)Average 1.042 0.844 0.861
(-) Average 0.977 0.930 0.798
Global Ave 1.006 0.890 0.824
Table 1: Hand Held by Grounded Operator

5
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
Mounted on 5lb. Weight with Grounded Wrist Strap (Table 2)
12 inches 18 inches 24 inches
(+)Average 1.054 0.912 0.932
(-) Average 0.929 0.927 0.901
Global Ave 0.962 0.920 0.914
Table 2: Mounted on 5lb. Weight with Grounded Wrist Strap
D. The PCS-730 Charging Source provides ±1.25kV DC for applica ons where an auxiliary portable
electrosta c power supply is useful. It is designed for use with the PFM-711A Field Meter and
CPM-720A Charge Plate Assembly. In order to obtain power output from the PCS-730:
1. Its charging wand must be installed in the output receptacle.
2. The PCS-730 must be grounded during normal opera ons.

6Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
II. Cau ons & Warnings
A. Do not point the PFM-711A Field Meter Ranging Lights into anyone’s eyes.
CAUTION
Do not point ranging lights into anyone’s eyes.
B.
Do not exceed 6,000 volts on CPM-720A Charge Plate Assembly.
C. Only qualifi ed instrument repair personnel should open or repair either the PFM-711A Field Meter
or the PCS-730 Charging Source.
WARNING
Only qualifi ed personnel should open or repair PFM-711A
Field Meter or PCS-730 Charging Source.
D. Do not use the PCS-730 Charging Source in close proximity to electrosta c discharge sensi ve
(ESDS) devices; do not make contact with ESDS devices.
CAUTION
Do not use PCS-730 Charging Source near ESDS devices.
E. Do not store the PCS-730 Charging Source with the Charging Wand Installed.
F. Turn OFF all instruments when in storage or transit. Remove ba eries when instruments are in-
tended for long-term storage, i.e., six months or longer.
CAUTION
Ground Cases of PFM-711A Field Meter and
PCS-730 Charging Source for proper opera on.
III. Equipment Inspec on & Ini al Prepara on for Use
A. PFM-711A Field Meter - Equipment and Accessories
• One PFM-711A Field Meter
• One 36 inch analog output test cable equipped with two male banana plug
• One 9 volt DC ba ery

7
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
B. PFM-711A Field Meter Prepara on for use.
1. Install 9 volt ba ery provided by sliding ba ery com-
partment open and fi rmly snapping ba ery terminals to
the appropriate connectors. Ba ery can only be con-
nected in one way. Carefully reclose the ba ery com-
partment.
2. Before opera ng the PFM-711A, the operator should se-
lect and wear a wrist strap that is confi rmed func onal
and properly grounded.
OPERATIONAL REQUIREMENT
Cases of PFM-711A Field Meter and PCS-730 Charging Source
MUST be grounded for proper opera on .
3. With the operator’s fi ngers contac ng the grounding snap on the back of the unit, slide the
three posi on Range/Power Switch (s1) (kV/inch, OFF V/inch) to the kV/inch posi on.
a. Confi rm that the instrument’s display is ac vated and that the ba ery low indica on
(BATT) is not displayed. If low ba ery is displayed, replace the ba ery.
DIGITAL DISPLAY
ANALOG OUTPUT
RANGE/POWER SWITCH (s1)
PANEL ZERO (r16)
INTERNAL ZERO
ADJUSTMENT (r27)
INTERNAL GAIN
ADJUSTMENT (r10)
SAMPLE/HOLD
BUTTON (s2)

8Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
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. CPM-720A Charge Plate Assembly – Equipment and Accessories
1. One parallel plate assembly equipped with Tefl on insulators between parallel plates:
a. Upper plate is a square sensing plate equipped with a banana receptacle.
NOTE
Each CPM-720A is calibrated at the factory to match its respec ve PFM-711A fi eldmeter.
Do not modify the CPM-720A calibra on adjustment without following factory
calibra on procedure. Matched PFM-711A and CPM-720A units have the same
serial numbers. Do not interchange .
b. Bo om plate is a ground reference plate, notched and sized for a achment to the PFM-
711A.
2. An insula ng pad is installed beneath the square upper plate for separa on between
the CPM-720A sensing plate and the PFM-711A Field Meter case.
3. One female metal banana plug receptacle is installed on the sensing (upper) plate.
4. A calibra on adjustment screw and nut assembly is installed beneath the upper plate,

9
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
between the sensing and notched ground plates.
D. CPM-720A Charge Plate Assembly Prepara on for use
1. With the PFM-711A Field Meter controls and the CPM-720A sensing plate facing up
(the lower plate has a cutout for the meter), carefully slide the CPM-720A’s lower
ground plate into the LOWER moun ng grooves molded into the sides of the PFM-
711A’s case.
OPERATIONAL NOTE
Ini al moun ng of the CPM-720A Charge Plate Assembly to the PFM-711A
Field Meter Case will be extremely snug. Be sure that plate and meter case
grooves are perfectly matched before ma ng the two instruments together.
Subsequent uses will cause suffi cient wear for easy moun ng .
2. Carefully slide the plate towards the meter’s sensor un l the plate assembly is fully
mounted to the PFM-711A.
a. The PFM-711A Meter case should be mounted snugly into the lower grounding plate notch.
b. The insulated pad located beneath the upper plate isolates the upper plate from the PFM-
711A Meter case.
3. Before opera ng the PFM-711A and CPM-720A Charge plate assembly, the operator should
select and wear a wrist strap that is fully func onal and properly grounded.

10 Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
OPERATIONAL REQUIREMENT
Cases of PFM-711A fi eld meter and PCS-730 charging source MUST be
grounded for proper opera on .
4. With the operator’s fi ngers contac ng the grounding snap on the back of the PFM-711A Field
Meter unit, slide the three posi on (kV/inch, OFF, V/inch) RANGE/POWER switch (s1) to the
kV/inch posi on.
a. Confi rm that the instrument’s display is ac vated and that the ba ery low indica on (BATT)
is not displayed. If low ba ery indica on is displayed, replace the ba ery.
b. With the PFM-711A meter case grounded, hold the unit away from surfaces and objects,
and rotate the Black Panel ZERO knob (r16) un l the display indicates 0.00.
5. Experiment with the PFM-711A/CPM-720A combina on by touching a charged object to the
upper sensing surface of the CPM-720A. (Note: review the func ons of the PCS-730 for this
experiment; meter indica on should be approximately ±1.20 kV) Discharge the upper plate to
ground, or short the upper and lower plates, un l the PFM-711A meter reads zero.
6. 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.
7. Hold the unit away from surfaces and objects, and rotate the Black Panel ZERO knob (r16) un l
the display indicates 000.
8. Experiment with the PFM-711A/CPM-720A combina on by touching a charged object to the
upper sensing surface of the CPM-720A. (Note; review the func ons of the PCS-730 for this
experiment; meter indica on should be approximately ±1,200 volts.) Discharge the upper plate
to ground, or short the upper and lower plates, un l the PFM-711A meter reads zero.
E. PCS-730 Charging Source - Equipment and Accessories
• One PCS-730 Charging Source instrument equipped with three posi on rocker switch and
female banana receptacle at the front end of
the PCS-730 case.
• One Charging Wand equipped with male ba-
nana plug
• One 9 volt DC Ba ery

11
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
F. PCS-730 Charging Source Prepara on for Use
1. Install provided 9 volt ba ery by sliding ba ery com-
partment open and fi rmly snapping ba ery terminals to
the appropriate connectors. Ba ery can only be con-
nected in one way. Carefully re-close the ba ery com-
partment.
2. Before opera ng the CPM-730, the operator should
select and wear a fully func onal wrist strap that is
properly grounded.
3. Mount the CPM-720A Charge Plate Assembly to the
PFM-711A Field Meter as described above.
4. Install the charging Wand male banana snugly into the female receptacle located at the front
of the PCS-730’s case.
OPERATIONAL REQUIREMENT
Both cases of PFM-711A Field Meter and PCS-730 Charging Source must be grounded.
In addi on, the PCS-730 Charging Wand MUST be fully seated in the output receptacle
for proper opera on.
5. With the operator’s fi ngers contac ng the grounding snap on the back of the PFM-711A unit,
slide the three posi on (kV/inch, OFF, V/inch) RANGE/POWER switch (S1) to the kV/inch posi-
 on.
a. Confi rm that the instrument’s display is ac vated and that the ba ery low indica on
(BATT) is not displayed. If low ba ery indica on is displayed, replace the ba ery.
b. Hold the PFM-711A/CPM-720A combina on away from surfaces and objects, and rotate
the PFM-711A’s Black Panel ZERO knob (r16) un l the display indicates 0.00.
6. With the operator’s fi ngers contac ng the metal grounding snap on the back of the PCS-730
Charging Source, press the three posi on rocker switch to the front, +1kV posi on. Touch
the  p of the charging wand directly to the upper sensing plate of the CPM-720 Charge Plate

12 Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
Assembly and Charge the CPM-720A to approximately
+1.20kV.
7. Discharge the upper plate to ground, or short the upper
and lower plates, un l the PFM-711A meter reads zero.
8. With the operator’s fi ngers contac ng the metal ground-
ing snap on the back of the PCS-730 Charging Source,
press the three posi on rocker switch to the rear, -kV
posi on. Touch the  p of the Charging Wand directly to
the upper sensing plate of the CPM-720 Charge Plate
Assembly and Charge the CPM-720A to approximately
–1.20kV.
9. Discharge the upper plate to ground, or short the upper and lower plates, un l the PFM-711A
meter reads zero.
OPERATIONAL NOTE
The PCS-730 Charging Source’s three posi on rocker switch is spring loaded to the cen-
ter OFF posi on. For proper opera ons the Charging Wand MUST be fi rmly installed,
the unit case grounded by the operator, and the switch fi rmly pushed in either the
+ 1kV or – 1kV posi on.
G. Confi rming PFM-711A Field Meter Analog Output Func on.
1. Connect the conductor 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 digital
Mul meter (DMM).
4. Perform the procedure “PCS-730 Charging Source Prepara on for Use” outlined above in Sec-
 on F.
5. When the PFM-711A displays 1,000 volts, the analog output should be approximately 0.1 volts.
IV. Applica ons
A. 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
the kV/inch range, the PFM-711A will indicate electrosta c fi eld voltage from 0 to ±19,990 volts
in 10 volt increments at one inch distance from the charged surface. In the V/inch range, it will
indicate electrosta c fi eld voltage from 0 to ± 1.999 volts in 1 volt increments at one inch distance
from the charged surface.
B. The CPM-720A Charge Plate Assembly is designed specifi cally for use with the PFM-711A Field Me-
ter. Once installed on the PFM-711A, the assembly becomes a portable, ba ery operated Charge
Plate Monitor (CPM). Primary applica ons for CPM assemblies are:

13
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
1. Confi rming the electrosta c voltage balance of ionizer blowers and systems
2. Measuring electrosta c voltage genera on of personnel in conjunc on with footwear and fl oor
surfaces.
3. Measuring electrosta c voltage genera on related to chairs, carts and equipment.
The voltages generated or applied to the CPM-720A Charge Plate Assembly are read directly on
the PFM-711A Meter instrument.
C. The PCS-730 Charging Source is an auxiliary ba ery operated electrosta c power supply for use
with the CPM-720A Charge Plate Assembly. The PCS-730 provides approximately ±1.25kV when
grounded and used with its charging wand. Once the PFM-711A Field Meter and CPM-720A Charge
Plate are assembled, the PCS-730 Charging Source will apply a defi ned electrosta c voltage to the
CPM-720A plate. Having the capability to charge the CPM-720A provides a mul tude of electro-
sta c audi ng and performance test capabili es. Primary applica ons for the CPM-730 Charging
Source are:
1. Confi rming the electrical decay performance of ionizers and other equipment
2. Confi rming electrosta c decay of personnel, clothing, materials and equipment
3. Performing suppression analysis on work surfaces, produc on aids and other materials and
devices
V. General Opera ons
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.
2. With the operator’s fi ngers contac ng the grounding snap
on the back of the unit, slide the three posi on (kV/inch,
OFF, V/inch) RANGE/POWER switch (s1) to the kV/inch
posi on.
OPERATIONAL REQUIREMENT
Cases of PFM-711A Field Meter and PCS-730 Charging Source MUST
be grounded for proper opera on.
a. Confi rm that the instrument’s display is ac vated and that the ba ery low indica on (BATT)
is not displayed. If low ba ery indica on is displayed, replace the ba ery.
b. Insure the HOLD feature is OFF. Turn the HOLD feature OFF by pushing the SAMPLE/HOLD
(s2) control bu on once.
c. Hold the unit away from surfaces and objects, and rotate the Black Panel ZERO knob (r16)
un l the display indicates 0.00.
3. Posi on the front sensor of the PFM-711A Field Meter approximately one inch from the sur-

14 Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
face or object being measured. Move the instrument
toward, or away from the surface un l the RED Bull’s Eye
is focused on the test surface.
CAUTION
Do not shine the RED Bull’s Eye Ranging lights into yours
or anyone else’s eyes.
4. Once the instrument is properly posi oned, the PFM-
711A will indicate the electrosta c fi eld measured on
its display. If desired, push the SAMPLE/HOLD bu on (s2) once to lock the indica on on the
display. The HOLD indica on will also appear on the instrument display.
5. For very low voltage measurements, repeat the procedure with the PFM-711A in its low range.
Slide the RANGE/POWER switch (s1) to V/inch posi on. Re-zero the instrument and repeat the
meter posi oning and measurement procedures in points 2-4, above.
B. Ionizer Blower Balance Check using the PFM-711A Field Meter & CPM-720A Charge Plate Assem-
bly combina on.
1. Allow the ionizer to be measured to operate at normal speed for a minimum of 30 minutes
prior to measuring balance. Follow the manufacturer’s instruc ons for normal opera ons.
2. Mount the CPM-720A Charge Plate Assembly on the PFM-711A Field Meter Case.
3. Ground the case of the PFM-711A. Note there are two ways to use Prostat devices to ground
the PFM-711A/CPM-720A combina on.
a. If the operator is wearing a properly grounded wrist strap and making direct contact with
the metal ground snap mounted on the back of the PFM-711A’s case, the unit will be suf-
fi ciently grounded.
b. Use an auxiliary worksurface common point ground snap
i. Mount the 10mm male common point ground snap directly to the 10mm female snap
located on the back of the PFM-711A’s case.
ii. A ach the common point ground cord to a previously tested ground point.
4. Select the range you wish to use for balancing the ionizer.
a. Select the V/inch range on the PFM-711A Field Meter and zero the unit, ±2 volts to ground.
This will provide the most precise balance indica on and result in ±5 volts balance.
b. Select the kV/inch range on the PFM-711A Field Meter and zero (0) the unit to ground. This
will provide a good balance indica on and result in approximately ±15 volts balance.

15
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
OPERATIONAL REQUIREMENT
If documenta on of ionizer balance is required, connect the analog
output of the PFM-711A to PGA-710 Autoanalysis System or an X-Y Plo er. Note that
the RED analog output lead is Posi ve (+) and the BLACK is Nega ve (-). Zero the PFM-
711A/CPM-720A combina on and the X-Y Plo er to ground. Operate the plo er per
manufacturer’sinstruc ons during the balancing procedure.
5. Posi on the sensing surface of the CPM-720A Charge Plate perpendicular to the ionzier’s air
fl ow, approximately 12 inches from its front air outlet.
a. Hold the instrument combina on so that the CPM-720A Charge Plate is in the airfl ow; mini-
mize the airfl ow to the PFM-711A’s meter case.
b. Make sure good contact is made with the PFM-711A’s ground snap.
OPERATIONAL HELPFUL HINT
Zero the PFM-711A/CPM-720A combina on while grounded and the upper and lower
CPM plates shorted with a small screw driver. Perform the Zeroing process away from
the ionizer. Hold the assembly by the PFM-711A case with your fi ngers touching the
metal ground snap. Approach the ionized air fl ow from above the ionizer with the
sensing CPM plate poin ng down into the air stream.
6. Allow the PFM-711A/CPM-720A combina on to stabilize in the ion air fl ow for approximately
30-45 seconds and note the ion off set voltage, i.e., the diff erence in voltage from the Zero set
point on the PFM-711A.
7. Adjust the ion balance in accordance with the manufacturer’s instruc ons such that the dis-
played off set voltage on the PFM-711A/CPM-720A combina on is 0, ±5 volts.
8. Remove the PFM-711A/CPM-720A combina on from the ion air fl ow and re-zero the system.
Repeat the balance measurement to insure accuracy.
C. Ionizer Blower Decay Performance Check using the PFM-711A Field Meter/CPM-720A Charge Plate
Assembly combina on, and the PCS-730 Charging Source.
1. Allow the ionizer to operate at normal speed for a minimum of 30 minutes prior to measuring
balance. Follow the manufacturer’s instruc ons for normal opera ons.
2. Mount the CPM-720A Charge Plate Assembly on the PFM-711A Field Meter Case.
3. Ground the case of the PFM-711A, as described below.
a. If the operator is wearing a properly grounded wrist strap and making direct contact with
the metal ground snap mounted on the back of the PFM-711A’s case, the unit will be suf-
fi ciently grounded.
b. Use the auxiliary work surface common point ground
i. Mount the 10mm male common point ground snap directly to the 10 mm female snap
located on the back of the PFM-711A’s case.
A ach the common point ground cord to a previously tested ground point.

16 Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
4. Select the range you wish to use for audi ng the ionizer’s decay performance. NOTE: Most
accurate decay  me measurements are obtained using the analog output connected to a PGA-
710 Autoanalysis System or an X-Y plo er, PDT-740B Timer or digital Mul meter.
a. Select the V/inch range on the PFM-711A Field Meter and zero the unit, ±2 volts to ground.
This will provide the most precise voltage indica on. However, the instrument meter indi-
ca on is dampened so that  me of decay will be slower than actual decay  me.
b. Select the kV/inch range on the PFM-711A Field Meter and zero (0) the unit to ground. This
will provide good indica on and result in a faster decay  me because the meter dampening
is less pronounced. The instrument meter indica on is dampened in this range so that  me
of decay will be slower than actual decay  me.
c. For accurate decay  mes that are documented, perform this procedure with the analog
output of the PFM-711A Field Meter connected to the input of a PGA-710 Autoanalysis Sys-
tem or an X-Y plo er as described below. A er char ng the charge and decay process, cal-
culate the actual decay  me based on the chart speed of the plo er. (See Step 11, below).
5. Posi on the sensing surface of the CPM-720A Charge Plate perpendicular to the ionizer’s air
fl ow, approximately 12 inches from its front air outlet.
a. Hold the instrument combina on so that the CPM-720A Charge Plate is in the airfl ow;
minimize the airfl ow to the PFM-711A’s meter case.
b. Make sure good contact is made with the PFM-711A’s ground snap.
6. Allow the PFM-711A/CPM-720A combina on to stabilize in the ion air fl ow for a minimum of
30-45 seconds and note the ion off set voltage.
7. Install the Charging Wand in the front of the PCS-730 Charging Source. Ground the PCS-730
Charging Source by making direct contact with the metal snap located on the back of its case.
a. To charge the Wand to >+1.0kV push the three posi on rocker switch toward the front of
the unit.
b. To charge the Wand to >-1.0kV, push the three posi on rocker switch toward the back of
the unit.
8. Touch the wand to the CPM-720A’s sensing (upper) plate and note the voltage indicated on the
PFM-711A meter.
9. Once the desired voltage level is achieved, discon nue
the charging process and remove the PCS-730 Charging
Source from the air path.
10. Observe the voltage drop indicated on the PFM-711A
meter. Voltage should decay over  me to the ini al off set
point indicated during the balance test procedure out-
lined above.
11. To obtain an accurate measurement of decay  me from
1,000 volts to 100 volts, use the following procedure em-
ploying an X-Y plo er for documenta on and calcula on purposes.

17
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
a. Install the analog output cable in the ANALOG OUTPUT jack on the front of the PFM-711A.
b. Connect the analog output cable to an X-Y plo er, or other suitable recording device.
i. The RED output plug is Posi ve (+).
ii. The BLACK output plug is Nega ve (-).
c. Zero the PFM-711A/CPM-720A combina on and X-Y plo er to ground.
d. Start the X-Y plo er and perform the charge/decay procedure, above.
e. At the end of the decay cycle, stop the X-Y plo er.
i. Calculate the decay  me indicated on the X-Y plo ers recording chart using 1,000 volts
as  me zero (0).
• Locate the point on the chart where the voltage plot line intercepts the 1,000 volt
value.
• Locate the point on the chart where the voltage plot line intercepts the 100 volt
value.
• Based on chart speed, defi ne the  me in seconds required to decay from the 1,000
to 100 volt intercepts.
ii. Mul ply the X-Y plo er’s defi ned decay  me by two (2) to obtain the decay  me from
1,000 to 100 volts so that the value is compa ble with ESD STM3.1-2000 guidelines.
OPERATIONAL NOTE
The capacitance of the CPM-720A plate is 1- pF. Decay  mes obtained from
the analog output of the PFM-711A, should be mul plied by 2, in order to be
comparable to decay  mes obtained using ANSI/ESD STM3.1 Ioniza on Test method.
ANSI/ESD STM3.1 CPM capacitance is 20pF.
D. Using the PFM-711A/CPM-720A combina on to Measure Body Voltage Genera on related to
Footwear and Flooring combina ons.
1. Mount the CPM-720A Charge Plate Assembly on the PFM-
711A Field Meter case.
2. Ground the case of the PFM-711A, as described below.
a. Using a Prostat® wrist strap cuff , mount the cuff on one
of the fi ve pound NFPA electrodes found in Prostat®
kits.
b. Remove the insulated cap covering the 10 mm male
snap located in the cuff fabric approximately 1.5 inches
from the cuff buckle.

18 Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
c. Snap mount the PFM-711A’s 10 mm female snap (located on the back of the PFM-711A’s
case) onto the wrist strap 10 mm male snap.
d. Adjust the wrist strap cuff so that the instrument is held fi rmly to the electrode; lock the
adjustment buckle.
e. A ach the wrist strap cord to the standard 4 mm snap connec on located on the cuff
buckle.
f. Connect the groundable end of the wrist strap cord to a previously tested ground point.
3. Connect a wire test lead to the CPM-720A Charge Plate Assembly banana plug receptacle. One
of the PRS-800L ten-foot leads may be used for this purpose.
a. Connect the opposite end of the test lead to a metal object, or the PFA-860 Footwear Audi-
tor handle.
b. Grasp the metal handle during walking tests to “share” one’s body charge with the CPM-
720A sensing plate.
c. Generated body voltage will be indicated on the PFM-711A Field Meter.
4. Select the range you wish to use for measuring body voltage genera on.
a. Select the V/inch range on the PFM-711A Field Meter and zero the unit, ±2 volts to ground.
This will provide the slowest indica on of body voltage indica on due to meter dampening
Consequently, indicated voltages will be less than actual voltages generated.
b. Select the kV/inch range on the PFM-711A Field Meter and zero (0) the unit to ground. This
will provide be er measurements of body voltage, which is the result of less meter damp-
ening. Again, however, indicated voltages will be less than actual voltages generated.
E. Opera onal Summary
The PFM-711A Field Meter, CPM-720A Charge Plate Assembly, and PCS-730 Charging Source work
together to give an ESD Auditor unique evalua on capabili es even in the most remote environ-
ments. The applica ons for these unusual devices are limited by one’s imagina on and under-
standing of their various func ons.
With a minimum of accessories, these devices can assist the profi cient auditor in examining many
items for electrosta c fi elds, voltage genera on, decay performance or ioniza on off set (balance).
NOTE: Review all CAUTIONS & WARNINGS in this booklet.

19
Rev. 6 / July 16, 2020
PFK-100 Field Meter Set
1. PFM-711A Controls
The PFM-711A has two switches and a rotary knob. A three-posi on slide switch (S1) pro-
vides Range Selec ons and ON/OFF control. A push bu on switch (S2) provides SAMPLE/
HOLD selec on. A rotary ZERO adjust control (R16) is also provided. The 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.
2. 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 measure 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 on one inch, in one volt increments. Moving the
switch to its center posi on will turn the meter OFF.
3. Install the CPM-720A Charge Plate Assembly
Note that the PFM-711A meter case has two slots along its sides. The LOWER slot is
toward the bo om of the case. The Charge Plate Assembly has two func onal plates, an
isolated upper sensing plate and grounded lower plate. To install the Charge Plate Assem-
bly on the meter, slide the lower plate assembly into the LOWER slot of the meter case as
far as it will go.
DIGITAL DISPLAY
ANALOG OUTPUT
RANGE/POWER SWITCH (s1)
PANEL ZERO (r16)
INTERNAL ZERO
ADJUSTMENT (r27)
INTERNAL GAIN
ADJUSTMENT (r10)
SAMPLE/HOLD
BUTTON (s2)

20 Rev. 6 / July 16, 2020
PFM-100 Field Meter Set
4. 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 display 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 rear of the case.
5. Take an Electrosta c Field Measurement with the PFM-711A 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 ranging lights form a Bull’s Eye. Allow the instrument indica on to stabilize. Record the
measurement.
6. HOLD a PFM-711A Measurement
With the meter in the measurement posi on described above, press the SAMPLE/HOLD
bu on 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 documented. When the meter is in the HOLD posi on, the “HOLD” will appear in the
display.
7. PCS-730 Charge Source
The Charging Wand rod assembly is inserted into the output jack The momentary rocker
switch is depressed and held to produce the desired polarity. The contact rod is then
touched against the isolated plate of the CPM-720A. Releasing the rocker switch turns off
power to the unit.
The PCS-730 MUST be grounded for proper performance. A 10mm metal snap is provided
on the rear of the case to accomplish this. The user must be adequately grounded and
touch the snap while opera ng the PCS-730. Alterna vely, a grounding cord may be at-
tached to the snap. Improper grounding will result in low or erra c output voltages. The
output current of the PCS-730 is limited to less than 1 micro amp to minimize the possibil-
ity of personnel shock hazards. To avoid sta c damage; Do not make contact with electro-
sta c discharge sensi ve devices.
VI. Maintenance & User Adjustment
A. PFM-711A Field Meter
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.