Trek PD04002A User Manual
Model 04002A PD
Charged Plate Monitor Controller
! Utilizes Standard,
Custom and WideTemperature Range
Charged Plates
!
! High-Temperature
Charged Plate (Model
PD04002AP) 25 mm x 25
Trek’s PD04002A versatile microprocessor based charged
plate monitor is ideally suited to monitor the performance of
air ionizers that are used in critical wide temperature
operations associated with semiconductor, LCD, electronic
assembly, and other processes where static charge
accumulations pose a threat to production yields and/or
product quality.
The Model PD04002A utilizes a new technique which requires
less than 0.1 picoampere of ion field current to achieve full
accuracy and stability. Other product designs require up to
2000 times more ion current to be drawn from the ion field to
achieve stability.
The ultra sensitivity of the Model PD04002A makes it the ideal
choice in air ionizer monitor applications where small area ion
collecting sensors are used to meet the requirement for high
accuracy ion balance measurement to levels of less than one
volt. The voltage of the charged plate is initialized prior to
discharge time testing. Balance tests, positive discharge
tests, and negative discharge tests can be initialized from a
remote location through digital command signals.
The charged plate voltage can be remotely monitored through
a rear panel connection. The voltage output at the Output “HI”
terminal in reference to the Output “LO” terminal (ground) is a
proportional buffered representation of the charged plate
voltage at a scale factor of 1 to 22 (other scale factors are
available). The Model PD04002A wide temperature range
charged plate monitor functions with standard, custom, or
high temperature charged-plates. The monitor and hightemperature charged-plate can be used on a table top or
securely mounted by fasteners to the bottom of the unit.
mm (1² x 1²)
Cable Length: 3 meters
Capacitance: 20 pF
±5 pF
!
! Operating Range
-60° to 160° C
!
! Relative Humidity
To 85%, noncondensing
!
! Voltage Monitor Output
for Remote Monitoring
!
! Exceptional Accuracy
and Stability
!
! Compact Design
!
! Compliant
Measurement and Power Solutions
www.trekinc.com
TM
Model 10/40A Specifications
Model Charged Plate Monitor PD04002A
Performance Features (cont.) General
Charged Plate Voltage Range Dimensions
0 to ±55 V DC or peak AC,
nominal.
Digital Command Terminals
Plate (O) discharges the floating
plate to zero volts.
122 mm W x 43 mm H x 153 mm D
(4.8² W x1.7² H x 6² D).
Plate (+) precharges the floating
Charged Plate Voltage
Measurement Accuracy
0.2% of full scale.
Large Signal Bandwidth (-3 dB)
DC to greater than 200 Hz.
plate to +55 V.
Plate (-) precharges the floating
plate to -55V.
Positive discharge tests,
Negative discharge tests, and
Balance tests can be initialized
Weight
0.3 kg (0.6 lb).
Power
The Model PD04002A operates
from a +24 V ±10% supply
@ 0.21 amps.
from a remote location through
Small Signal Bandwidth (-3 dB)
DC to 2.5 kHz.
Charged Plate Self-Discharge
Rate (no incident ion flow)
Less than 2 V per minute at
55 V for relative humidity up to
85%.
Charged Plate Capacitance
20 pF ± 4 pF. (The capacitance
is independent of charged plate
connecting cable length.)
these digital command signals.
The voltage of the charged plate
is initialized to +55 V or -55 V for
discharge time testing or zero
for balance testing.
All the above digital command
inputs are at a 10 V DC High
Level. A minimum of 6 mA of
current sink capability is required
to pull the digital command inputs
to ground (0 V).
High-Temperature Charged
Plate (Trek Model PD04002AP)
Connection Block
Phoenix Contact Connector.
Connections include:
+24 V DC power input (+),
+24 V DC return (-),
Voltage Monitor (Hi),
Voltage Monitor (Lo),
Digital Reset (plate 0),
Digital Reset (plate +), and
Digital Reset (plate-)
Charged Plate Assembly
Input Connector
BNC connector.
25 mm x 25 mm (1² x 1²).
Features
Voltage Monitor Output V
0 to +5 V DC represents a
charged plate voltage of
-55 V to +55 V (other scale
factors are available).
When the charged plate is at
-55 volts, the voltage at the
Voltage Monitor Output V HI is
0 V. When the charged plate is
at 0 volts, the voltage at the
voltage monitor is +2.5 volts.
When the charged plate is at
+55 volts, the voltage at the
voltage monitor is +5 volts.
Accuracy
0.2% of full scale.
Cable Length
3 meters.
Capacitance
20 pF 5 pF.
±
Operating Range
-60° to 160° C.
Relative Humidity
To 85%, noncondensing.
Mounting
Model PD04002A Monitor
Four (4) M4 mounting screws
can be used to secure
the monitor assembly from the
bottom.
Charged Plate
One (1) M4 mounting screw
can be used to secure the
charged-plate monitor assembly
from the bottom.
User Connections
Connection block and
Unit Operating Conditions
Temperature
5 °C to 35 °C.
Relative Humidity
To 85%, noncondensing.
Certification
TREK, INC. certifies that each Model
PD04002A Charged Plate Monitor is
tested and calibrated to specifications
using measurement equipment
traceable to the National Institute of
Standards and Technology or traceable
to consensus standards. CE compliant.
Caution: These instruments are
designed to make electrostatic
voltage measurements only. Do not
use this instrument to make
measurements of “hard” voltage
sources or voltage sources which
can deliver currents high enough to
cause harmful shocks or personal
injury.
M4 ground lug.
Copyright ã 2011 TREK, INC. All specifications are subject to change. 1128/DEC
TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK
(fax) • www.trekinc.com • sales@trekinc.com 716-438-7555 • 716-201-1804
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