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User Manual

pdt-740b

static decay timer

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Summary of Contents for PDT-740B

Page 1: ...User Manual pdt 740b static decay timer ...

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Page 3: ...or Ionization Static Decay Measurements 7 IX Suggestion A for Material Static Decay Measurements 9 General Specifications 13 Table of Contents 2011 by Prostat Corporation All rights reserved Printed in the United States of America No part of this manual may be used or reproduced in any manner whatsoever without written permission For information contact Prostat Corporation 1072 Tower Lane Bensenvi...

Page 4: ...measurement accessories e g PGB 745 Decay Electrode or PRF 911 Concentric Ring fixtures are recommended II Before using the PDT 740B Static Decay Timer A Examine the instrument for damage contamination excessive dirt grease etc and defects If any abnormal conditions exist do not attempt to make any measurements B Basic contents of the PDT 740B package include 1 PDT 740B Instrument 2 One 9 volt bat...

Page 5: ...easurement Response Time The PDT 740B response is 0 2 seconds at 100 volt CUT OFF and 0 3 seconds at 50 and 10 volt CUT OFF VI Battery Installation Maintenance A Battery Replacement 1 Power is supplied by a 9 volt transistor battery that will provide greater than 40 hours of operation without replacement 2 Replace the battery periodically or when the GREEN RESET indicator will not reset in normal ...

Page 6: ... ANALOG INPUT JACK CUT OFF VOLTAGE SELECTOR SWITCH ON OFF SWITCH RED LED TIMING IN PROGRESS VII Connecting the PDT 740B to PFM 711A Fieldmeter A Mount the CPM 720 Charge Plate Assembly onto the PFM 711A in accordance with their manual instructions B With both instruments power switch OFF connect the analog cable between the PFM 711A Field Meter and PDT 740B Static Decay Timer 1 Insert one cable mi...

Page 7: ...stalled on the Field Meter the Charging Source is used to apply greater than 1 000 volts to the CPM To measure an ionizers decay time performance proceed as follows A While wearing a properly grounded wrist strap grasp the PFM 711A CPM 720 assembly in one hand making sure your hand contacts the grounding snap on the back of the PFM 711A Field Me ter 1 Place the PFM 711A Field Meter power switch in...

Page 8: ...sk top blower position the CPM 720 Charge Plate in the ionizers air flow approxi mately 12 inches from air output grid D As the ionizer neutralizes CPM voltage the field meter voltage will drop below 1 000 volts at which time 1 The Green LED Decay Cycle Ready automatically goes OFF 2 The PDT 740B LCD display begins timing function in seconds 3 The PDT 740B Red LED Timing in Progress automatically ...

Page 9: ...Timer The Charge Plate Assembly CPM 720 is installed on the Field Meter One end of a high resistance lead is connected to the CPM 720 Plate and the other end connected to a Prostat PGB 745 Electrode The PCS 730 Charging Source is used to apply greater than 1 000 volts to the CPM which is shared with the PGB 745 Electrode To measure material s decay time performance refer to the figures below and p...

Page 10: ...nt 2 Note that the PFM 711A Field Meter and CPM 720 Charge Plate Assembly may lay on a grounded conductive worksurface or be attached to ground through the PFM 711A ground snap Nothing should be in contact with the upper CPM 720 plate except the high resistance lead E Turn ON PDT 740B Timer and select Cut Off Voltage F With Charging Source properly grounded charge the CPM 720 Plate using the PCS 7...

Page 11: ... 740B LCD display begins timing function in seconds 3 The PDT 740B Red LED Timing in Progress automatically comes ON and stays ON until voltage decays to set cutoff 2 volts 4 When CPM plate voltage reaches cutoff volts or less the timer stops and the Red Timing in Progress LED goes OFF I Repeat the above procedure for additional measurements J As an option use two 2 PGB 745 Electrodes as shown bel...

Page 12: ...trode on the test specimen and attached to ground 3 The first electrode is connected and used as described above 4 In this case the charge dissipates from the first electrode moves across the material to the second grounded electrode 12 Rev B February 2005 PDT 740B Static Decay Timer ...

Page 13: ...esets Timer and Display to 00 0 when CPM voltage 1kV Reset indicated when Green LED Decay Cycle Ready LED is ON Response Approximately 200 milliseconds in combination with CPM and PFM 711A Timing Range From 0 2 to 159 9 seconds Timing Setpoints Reset when voltage input 100mv 2mv 1 000 Field Meter Volts 20V Cut Off Voltage 100 V 10mv 0 2mv 100 Field Meter Volts 2V Cut Off Voltage 50 V 5mv 2mv 50 Fi...

Page 14: ...NOTES 14 Rev B February 2005 PDT 740B Static Decay Timer ...

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Page 16: ...Prostat Corporation All other trademarks and trade names are the property of their respective companies P R O F E S S I O N A L S T A T I C C O N T R O L P R O D U C T S Prostat Corporation Corporate Headquarters 1072 Tower Lane Bensenville IL 60106 630 238 8883 Fax 630 238 9717 1 855 STATIC1 www prostatcorp com ...

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