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USER MANUAL

ELECTROSTATIC FIELD METER

PFM-711B CPM-720B PCS-730B PFK-100B

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Summary of Contents for CPM-720B

Page 1: ...USER MANUAL ELECTROSTATIC FIELD METER PFM 711B CPM 720B PCS 730B PFK 100B ...

Page 2: ...his product has included important literature concerning operation and maintenance Caution Consult instructions for use This symbol instructs the user to consult the user manual for further safety related information This symbol indicates earth ground This symbol represents capacitance This apparatus uses batteries In your community there might be environmental regulations that require you to disp...

Page 3: ...a possibility of damaging the sensor It is possible to use this product in ionized air However normally specified accuracy of 5 cannot be guaranteed in this case Do not exert any pressure on the LCD display from the top In rare cases cleaning the PFM 711B case and display with a slightly dampened cloth may be required Should this be required use a very weak solution on of liquid soap and water The...

Page 4: ... surface with an accuracy of 5 of the displayed value In the V inch range the instrument measures field density from 0 to 1 999 volts in 1 volt increments at a distance of 1 25 mm from the charged surface with an accuracy of 5 of the displayed value The two LED ranging lights help position the meter at the right distance from a charged object for accurate measurements The conductive case and groun...

Page 5: ... the meter ON Press and hold for 2 seconds long press to turn the meter OFF Green MEASUREMENT RANGE Selects the measuring range between Low Range V inch and High Range kV Inch Blue MEASUREMENT HOLD Holds the measured value Press again to return to normal measurement operation Yellow DIGITAL ZERO Adjusts the displayed value to zero 0 Table 1 PFM 711B Pushbuttons ZERO HOLD RANGE ...

Page 6: ... reflective display Figure 1 Display Features PFM 711B Number Feature Indication 1 Digital numerical value 2 Negative polarity 3 Decimal point Visible in high range kV Inch range only 4 Indicates low battery Table 2 Display Features PFM 711B 1 2 3 4 ...

Page 7: ... On the back of the meter there s a battery compartment Carefully press down the cover using its grooves 2 Remove the old battery carefully if present 3 Firmly nap the battery terminals to the appropriate connectors Make certain of the polarity 4 Carefully reclose the battery compartment cover Low Battery Indicator The LCD is designed to indicate when the battery is low When the battery reaches ap...

Page 8: ...e than once to obtain zero 0 00 Note When the PFM 711B is in HOLD mode the Zero Adjustment function is inoperative Range Selection The green RANGE button switch allows the user to select the proper range of measurement When turning the meter on the default range selected is kV inch By pressing the RANGE button the range is switched to V inch Note If turning the meter off while in the V inch range ...

Page 9: ...lights form a Bull s Eye Table 1 Allow the instrument to stabilize Target Measuring Distance Acceptable Distance from measuring surface it less than 1 25mm Distance from the measuring surface is at 1 25mm Distance from surface is greater than 1 25mm Table 3 LED Ranging Lights WARNING Do not shine the RED Bull s Eye Ranging lights into yours or anyone else s eyes Analog Output Mode With the optiona...

Page 10: ...of conductive resin The grounding terminal provides the reference potential for the electrical circuit This terminal should be grounded properly for proper measurement If it is not properly grounded the accuracy is not guaranteed Static Charge Measurement 1 With the operator s fingers contacting the grounding snap on the back of the meter Figure 3 press the green RANGE button switch to select the ...

Page 11: ...tage CPM 720B Charge Plate Assembly The CPM 720B Charge Plate Assembly is a miniature isolated plate attachment for the PFM 711B Field Meter It converts the PFM 711B into a portable battery operated charged plate monitor CPM This unique design allows precision balancing of ionizing blowers and other devices to less than 5 volts accuracy When used with auxiliary leads or wrist strap the CPM 720B me...

Page 12: ...n adjustment screw and nut assembly is installed beneath the upper plate between the sensing and notched ground plates NOTE Each CPM 720B is calibrated at the factory to match its respective PFM 711B Field Meter Do not modify the CPM 720B calibration adjustment without following factory Calibration procedure Matched PFM 711B and CPM 720B units have the same serial numbers Do not interchange Mounti...

Page 13: ...fully slide the plate towards the meter s sensor until the plate assembly is fully mounted to the PFM 711B Figure 5 a The PFM 711B meter case should be mounted snugly into the lower grounding plate notch b The Teflon wedge located beneath the upper plate isolates the upper plate from the PFM 711B meter case 3 Before operating the PFM 711B and CPM 720B the operator should select and wear a wrist st...

Page 14: ...s measure suppression and perform a variety of other electrostatic evaluations and demonstrations The PCS 730B charger is a battery operated hand held device used to charge an object to approximately 1 250 Volts 5 when grounded and used with its charging wand Figure 5 The CPM 720B s mounted onto the PFM 711B Lower Mounting Grooves Lower Ground Plate Teflon Wedge ...

Page 15: ...negative charge to the CPM 720B charge plate assembly to approximately 1 25kV 5 Table 4 PCS 730B Pushbuttons Battery Installation The PCS 730B uses one 1 9 VDC alkaline battery included which provides an approximate life of XX hours To install or replace the battery follow this procedure Figure 6 1 On the back of the meter there s a battery compartment Carefully press down the cover using its groo...

Page 16: ...DS devices or assemblies 1 Install the charging wand included male banana snugly into the female receptacle located at the front of the PCS 730B s case 2 With the operator s fingers contacting the grounding snap on the back of the meter press the green RANGE button switch to select the kV inch range The LED for kV inch will be illuminated 3 Hold a flat sheet of material in front of the meter s sen...

Page 17: ...he upper plate to ground or short the upper and lower plates until the PFM 711B meter reads zero 0 00 7 With the operator s fingers contacting the metal grounding snap on the back of the PCS 730B Charging Source Figure 7 press the button switch 1kV Touch the tip of the charging wand directly to the upper sensing plate of the CPM 720B Charge Plate Assembly and charge the CPM 720B to approximately 1...

Page 18: ...surface 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 711B s case ii Attach 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 711B Field Meter and zero 0 the unit 2 volts to ground This will provid...

Page 19: ...yed off set voltage on the PFM 711B CPM 720B combination is 0 00 5 volts 8 Remove the PFM 711B CPM 720B combination from the ion air flow and re zero the system Repeat the balance measurement to insure accuracy Ionizer Blower Decay Performance Check Ionizer Blower Decay Performance Check using the PFM 711B Field Meter CPM 720A Charge Plate Assembly combination and the PCS 730B Electrostatic Charge...

Page 20: ...d The instrument meter indication is dampened in this range so that time of decay will be slower than actual decay time c For accurate decay times that are documented perform this procedure with the analog output of the PFM 711B Field Meter connected to the input of a PGA 710B Autoanalysis System After charting the charge and decay process calculate the actual decay time based on the chart speed o...

Page 21: ...1 Mount the CPM 720B Charge Plate Assembly on the PFM 711B Field Meter Case as described above 2 Ground the case of the PFM 711B as described below a Using a PWS 610M fabric wrist strap cuff mount the cuff on one of the five 5 pound NFPA electrodes such as the PRS 801W NOTE The use of the Prostat PWS 610M is recommended for this application due to its built in 10mm male snap so that connects to th...

Page 22: ... s body charge with the CPM 720B sensing plate c Generated body voltage will be indicated on the PFM 711B Field Meter 4 Select the range you wish to use for measuring body voltage generation a Select the V inch range on the PFM 711B Field Meter and zero the unit 2 volts to ground This will provide the slowest indication of body voltage indication due to meter dampening Consequently indicated volta...

Page 23: ... are removed CAUTION In rare cases cleaning the PFM 711B case with a slightly dampened cloth may be required Should this be required use a very weak solution of liquid soap and water The cloth should be barely damp DO NOT allow cleaning solution to enter the unit through its openings Should the unit become damaged through the use of cleaning solutions the warranty will be voided CPM 720B Charge Pl...

Page 24: ...tatcorp com and click Support or contact a Prostat Authorized Calibration Laboratory To keep your product in optimum condition we recommend having it verified and calibrates on an annual basis by Prostat or an Authorized Calibration Laboratory The PFM 711B will not measure a surface accurately Make sure that the sensor located at the front end of the meter has an acoustic sound coming from it Turn...

Page 25: ...grounded using a wrist strap and making direct contact with the metal ground snap mounted on the back of the PCS 730B The CPM 720B will not retain a charge long enough Per ANSI ESD STM3 1 the isolated conductive plate when charged to the desired test voltage shall not discharge more than 10 of the test voltage If the CPM 720B is losing more than 10 of the charge within 1 minute you may need to cle...

Page 26: ...ve owners Complying with all applicable copyright laws is the responsibility of the user Modification of this document is not permitted without written permission from Prostat Corporation Content subject to change without notice Printed in U S A Rev 1 4 1 2021 Specifications subject to change without notice Printed in U S A Rev 1 4 1 2021 QUESTIONS OR COMMENTS CALL OR VISIT US ONLINE AT WRITE 1 85...

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