Prostat PDT-740B User manual

User Manual
PDT-740B
STATIC DECAY TIMER

PROSTAT® PDTͳ740B STATIC DECAY TIMER
SecƟon Topic Page
I. Introducon 4
II. Before using the PDT-740B 4
III. Safety 4
IV. Funcon 5
V Measurement Response Time 5
VI. Baery Installaon & Maintenance 5
VII. Connecng the PDT-740B to PFM-711A Fieldmeter 6
VIII. Normal Operaon for Ionizaon Stac Decay Measurements 7
IX. Suggeson “A” for Material Stac Decay Measurements 9
General Specificaons 13
Table of Contents
© 2011 by Prostat® Corporaon. 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 wrien permission. For informaon contact
Prostat Corporaon, 1072 Tower Lane, Bensenville, IL 60106 USA
Prostat is the registered trademark of Prostat® Corporaon

NOTE
Before using this, or any other electronic piece of equipment,
carefully read the instrucon manual completely.
I. IntroducƟon
The PDT-740B Stac Decay Timer is typical of Prostat’s innovave technology and support of Professional
ESD Control Managers and Auditors. This unique accessory is designed to measure the decay me of
ionizers from ±1,000 volts to less than 100 volts in accordance with ESD Associaon’s Ionizaon Standard
ANSI/ESD STM3.1, and measure material decay me to less than 50 volts and less than 10 volts. Properly
used, the PDT-740B provides decay me measurements for evaluang ionizers, packaging materials, foot-
wear, personnel grounding, producon aids, some equipment and many other ESD control products.
The PDT-740B Stac Decay Timer is used with Prostat’s precision portable Charge Plate Monitor kit com-
ponents, including the PFM-711A Field Meter, CPM-720A Charge Plate Assembly and PCS-730 ±1kV Charg-
ing Source. For evaluang materials and other products, addional decay measurement accessories e.g.,
PGB-745 Decay Electrode, or PRF-911 Concentric Ring fixtures are recommended.
II. Before using the PDT-740B StaƟc Decay Timer
A. Examine the instrument for damage, contaminaon (excessive dirt, grease, etc..) and defects. If
any abnormal condions exist, do not aempt to make any measurements.
B. Basic contents of the PDT-740B package include:
1. PDT-740B Instrument
2. One 9 volt baery
3. 40 inch (p to p) analog cable equipped with two (2) mini-phono jacks.
4. Cerficate of Calibraon
5. Available opons include:
a. PGB-745 Stac Decay Electrodes
b. PRF-911 Concentric Ring Fixture and PTB-920 Dual Test Bed
c. PTB-915 3x5.5 inch insulated test bed and 3x6 inch stainless steel test bed
III. Safety
The following safety informaon must be observed to insure maximum personal safety during the opera-
on of this meter.
A. DO NOT use the instrument if it appears damaged, or if you suspect it is not operang properly.
B. Measuring voltages which exceed the limits of this instrument, i.e., greater than 1,500 electrostac
volts, may damage it and expose the operator to a shock hazard. Always observe instrument volt-
age limits as stated.
4Rev. B / February 2005
PDT-740B Stac Decay Timer

C. As with other electronic devices, do not use or operate in wet condions or in hazardous combus-
ble environments.
IV. FuncƟon
The PDT-740B is designed specifically to measure decay me of ionizers and materials in seconds and
tenths of a second from 1,000 to 100, 50 or 10 volts. It is used with the Prostat PFM-711A Field Meter
and CPM-720 Charge Plate Monitor Assembly, or an equivalent instrument having an analog output of 1
volt equaling 10,000 electrostac volts. This easy to use instrument comes equipped with LCD display, an
analog input for connecon to the field meter, ON/OFF Power Switch and a VOLTAGE CUT-OFF SELECTOR
(10, 50 or 100 volts) switch.
V. Measurement 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. BaƩery InstallaƟon & Maintenance
A. Baery Replacement
1. Power is supplied by a 9 volt “transistor” baery that will provide greater than 40 hours of
operaon without replacement.
2. Replace the baery periodically or when the GREEN RESET indicator will not reset in normal
operaons.
NOTE: Dead baery voltage is approximately 7.2 to 7.5 volts.
3. Unit should be OFF when replacing baery.
4. To replace the baery:
a. Remove the cover from the back of the instrument.
b. Remove the baery from the case.
c. Connect a new baery to terminals and insert it into the baery compartment.
d. Replace the baery cover by sliding it carefully in the grooves provided. Do not over force
the cover on.
5
Rev. B / February 2005
PDT-740B Stac Decay Timer

If the cover does not re-install easily, remove the baery and reinsert for a beer fit. Be
sure wires do not hamper closing the baery cover.
e. The PDT-740B is now ready for use.
B. Storage & Cleaning
1. The unit should be stored in clean, dirt free condions at normal room temperature and hu-
midity. The ideal storage environment is within a Prostat designed case or kit.
2. Simply maintain the outer surface and display by wiping with a non-abrasive low linng cloth.
VII.ConnecƟng the PDT-740B to PFM-711A Fieldmeter
A. Mount the CPM-720 Charge Plate Assembly onto the PFM-711A in accordance with their manual
instrucons.
B. With both instruments’ power switch OFF, connect the analog cable between the PFM-711A Field
Meter and PDT-740B Stac Decay Timer:
1. Insert one cable mini-phono plug into the PFM-711A Analog Output receptacle located on the
lefront panel of the instrument.
2. Insert the opposite end of the cable into the PDT-740B Analog Input receptacle located on the
lefront panel of the instrument.
GREEN LED
READY LIGHT
ANALOG INPUT
JACK
CUT-OFF VOLTAGE
SELECTOR SWITCH
ON/OFF SWITCH
RED LED TIMING
IN PROGRESS
6Rev. B / February 2005
PDT-740B Stac Decay Timer

C. Slide the PFM-711A power switch to kV/inch to energize the field meter
D. Slide the PDT-740B ON/OFF switch to ON.
E. The system is ready for use
VIII. Normal OperaƟon for IonizaƟon StaƟc Decay Measurements
Overview:
The dual phono plug cable assembly is connected to the analog output of the PFM-711A Field Meter and
the Analog Input of the PDT-740B Decay Timer. With the Charge Plate Assembly (CPM) installed on the
Field Meter, the Charging Source is used to apply greater than ±1,000 volts to the CPM. To measure an
ionizers decay me 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 the kV/inch posion and ZERO the instru-
ment.
2. Note: Your hand should not make contact with, nor obstruct the CPM-720 Charge Plate Assem-
bly in any way.
7
Rev. B / February 2005
PDT-740B Stac Decay Timer

B. Turn ON PDT-740B Timer and select 100 Cut OffVoltage
1. With Charging Source properly grounded and held in your other hand, charge the CPM-720
Plate using the PCS-730 ±1KV Charging Source to > ±1,000 volts. When voltage exceeds ±1,000
volts, the PDT-740B Stac Decay Timer automacally:
2. Resets its display to ZERO (00.0)
3. Turns ON its Green LED, which provides Decay Cycle
Ready indicaon.
C. Assuming you are auding a desk top blower, posion
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 me:
1. The Green LED Decay Cycle Ready automacally goes OFF
2. The PDT-740B LCD display begins ming funcon in seconds
3. The PDT-740B Red LED Timing in Progress automacally comes ON and stays ON unl voltage
decays to 100 (±2) volts
4. When CPM plate voltage reaches 100 volts or less, the mer stops and the Red Timing in Prog-
ress LED goes OFF.
8Rev. B / February 2005
PDT-740B Stac Decay Timer

E. Repeat the above procedure for addional measurements.
IX. SuggesƟon “A” for Material StaƟc Decay Measurements
Overview:
The dual phono plug (input) cable assembly is connected to the analog output of the PFM-711A Field Me-
ter and the Analog Input of the PDT-740B Decay 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
me performance, refer to the figures below and proceed as described.
9
Rev. B / February 2005
PDT-740B Stac Decay Timer

A. Setup PFM-711A Field Meter, PCS-720 Charge Plate and PDT-740B Stac Decay Timer as described
and illustrated above.
B. Place the material to be tested on a grounded steel test bed.
C. Connect the PGB-745 Stac Decay Electrode to the CPM-720 Charge Plate using a high resistance
lead, and suspend the electrode above the specimen to be tested.
D. While wearing a properly grounded wrist strap and the PFM-711A/CPM-720 is connected to
ground:
1. Place the PFM-711A Field Meter power switch in the kV/inch posion and ZERO the instru-
ment.
2. Note that the PFM-711A Field Meter and CPM-720 Charge Plate Assembly may lay on a
grounded conducve worksurface or be aached 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 OffVoltage
F. With Charging Source properly grounded, charge the CPM-720 Plate using the PCS-730 ±1KV
Charging Source to > ±1,000 volts. This also charges the PGB-745 Electrode to the same voltage.
When voltage exceeds ±1,000 volts, the PDT-740B Stac Decay Timer automacally:
1. Resets its display to ZERO (00.0)
2. Turns ON its Green LED, which provides Decay Cycle Ready indicaon.
10 Rev. B / February 2005
PDT-740B Stac Decay Timer

G. Lower the PGB-745 Electrode onto the specimen under test
H. As the electrode dissipates its charge through or across the test specimen voltage will drop below
±1,000 volts, at which me:
1. The Green LED Decay Cycle Ready automacally goes OFF
2. The PDT-740B LCD display begins ming funcon in seconds
3. The PDT-740B Red LED Timing in Progress automacally comes ON and stays ON unl voltage
decays to set cutoff(±2) volts
4. When CPM plate voltage reaches cutoffvolts or less, the mer stops and the Red Timing in
Progress LED goes OFF.
I. Repeat the above procedure for addional measurements.
J. As an opon, use two (2) PGB-745 Electrodes as shown below:
11
Rev. B / February 2005
PDT-740B Stac Decay Timer

1. Place the specimen to be tested on an insulated test bed
2. Place the second electrode on the test specimen and aached 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 Stac Decay Timer

PDT-740B StaƟc Decay Timer SpecificaƟons
Controls: OFF-ON
Cut OffVoltage, 10, 50 and 100 Volts (Selects Voltage to stop ming)
Indicators: Green LED: Decay Cycle Ready > ±1kV, CPM voltage > ±1,000 volts
Red LED: Timing in Progress, CPM voltage decay ming acvated
LOBAT displayed when baery voltage <6.0 volts
Display: Liquid Crystal Display (LCD) displays elapsed decay me from ±1,000 volts to
selected Cut Offvoltage in seconds and tenths of a second (00.0)
Polarity: Automacally senses Posive & Negave voltage references
Zero & Reset: Automacally Resets 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 combinaon 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 OffVoltage @ 100 V: 10mv ±0.2mv (100 Field Meter Volts ±2V)
Cut OffVoltage @ 50 V: 5mv ±.2mv (50 Field Meter Volts ±2V)
Cut OffVoltage @ 10 V: 1mv ±0.2mv (10 Field Meter Volts ±2V)
Accuracy: Typically < ±5%
Power: One (1) standard 9-volt baery, PROCELL, Eveready #216 (NEDA 1604, JIS 006P, IEC
6F22)Eveready #216
Baery Life: >40 hours typical
Dimensions: 4.50 inches x 2.75 inches x 1.0 inches
Weight: 6.5 oz. (184 g)
13
Rev. B / February 2005
PDT-740B Stac Decay Timer

NOTES
14 Rev. B / February 2005
PDT-740B Stac Decay Timer

Specificaons are subject to change without noce.
All Prostat trademarks and trade names are the property of Prostat Corporaon.
All other trademarks and trade names are the property of their respecve companies.
PROFESSIONAL STATIC CONTROL PRODUCTS
Prostat Corporaon
Corporate Headquarters • 1072 Tower Lane • Bensenville, IL 60106 • 630-238-8883 • Fax: [phone] • 1-855-STATIC1 • www.prostatcorp.com