Products: Charged Plate Monitors
Model PD04002A CHARGED-PLATE MONITOR Controller
Model PM04002A Charged Plate Monitor Controller utilizes standard, custom and wide-temperature range charged plates. The compact design features exceptional accuracy and stability and features a voltage monitor output for remote monitoring. The Model PD04002AP Hi-Temperature Charged Plate (pictured) is a 25 mm x 25 mm (1" x 1") with an operating range of -60° to 160° C.
The Trek Model PD04002A is a versatile microprocessor based charged plate monitor which 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 this product 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 high-temperature charged-plate can be used on a table top or securely mounted by fasteners to the bottom of the unit. CE compliant.
PERFORMANCE
- Charged Plate Voltage Range
0 to ±55 V DC or peak AC, nominal.Charged Plate Voltage Measurement Accuracy
0.2% of full scale.Large Signal Bandwidth (-3 dB)
DC to greater than 200 Hz.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).
PRODUCT 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. - Digital Command Terminals
Plate (O) discharges the floating
plate to zero volts.
Plate (+) precharges the floating
plate to +55 V.
Plate (-) precharges the floating
plate to -55V. - Positive discharge tests, Negative discharge tests, and Balance tests can be initialized from a remote location through 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).Mounting
Four (4) M4 mounting screws can be used to secure the monitor assembly from the bottom.User Connections
Connection block and M4 ground lug.
ION COLLECTING PLATES
- Standard Option
Meets ESD Association Standard ANSI/ESD-STM3.1 requirements for:- Dimensions
15.3 cm x 15.3 cm square, (6" x 6" square). - Capacitance
20 pF ±2 pF.
- Dimensions
- Non-standard Option
- Dimensions
Specify when ordering. - Capacitance
Specify when ordering.
- Dimensions
- High Temperature Ion Collecting Plates
- Model PD04002AP
- Dimensions
25 mm x 25 mm (1" x 1") ion collecting plate - Cable Length
3 meters - Capacitance
20 pF ±5 pF - Operating Range
-60° to 160° C - Relative Humidity
To 85%, noncondensing
- Dimensions
- Model 156P-HT 150mm x 150mm Charge Plate
- Dimensions
15.3 cm x 15.3 cm square, (6" x 6" square) ion collecting plate - Cable Length
2.7 meters - Capacitance
20 pF ±5 pF - Operating range
-60° to 160° - Relative Humidity
To 85%, noncondensing
- Dimensions
- Model PD04002AP
- Standard Plates (ordered separately) include 15.3 cm x 15.3 cm (6" x 6" square) plate (Model 156AP-C150x150-R3M) and a 25 mm x 25 mm (1" x 1") plate (Model 156P-C25x25-S3M).
- Special Plates can be ordered separately. Custom plate sizes are available by special order.
GENERAL
- Dimensions
122 mm W x 43 mm H x 153 mm D
(4.8" W x1.7" H x 6" D).Weight
0.3 kg (0.6 lb).Power
The Model PD04002A operates from a +24 V ±10% supply @ 0.21 amps.Connection Block
Phoenix Contact Connector p/n 1740039.
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 Input Connector
BNC connector. Unit Operating Conditions
Temperature
5 °C to 35 °C.
Relative Humidity
To 85%, noncondensing.