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Products > ESD > Electrostatic Voltmeters for ESD
Model 542A Series Electrostatic Voltmeter
The Trek Model 542A Electrostatic Voltmeter provides accurate noncontacting measurements of electrostatic surface voltage associated with EOS/ESD sensitive processes.
The microprocessor based Model 542A is ideally suited to monitor critical operations associated with semiconductor, LCD, electronic assembly, and other processes where static charge accumulation poses a threat to production yields or product quality.
A twenty by four (20 x 4) alphanumeric LCD screen displays the present measured voltage, the positive peak voltage value, the negative peak voltage value, and additional menu information. The Model 542A includes independently programmable plus (+) and minus (-) voltage threshold/alarm limits. Audible and visible alarms indicate the detection of surface voltages which meet or exceed the programmed limits.
The Model 542A-1 has a voltage detection and measurement range of 0 to ±10 kV. The Model 542A-2 has a voltage detection and measurement range of 0 to ±20 kV. These models have an exceptional 5% reading accuracy, ±0.2% of full scale, over the probe to surface separation distance of 15 to 30 mm for the Model 542A-1 and 30 to 60 mm for the Model 542A-2.
The Model 542A utilizes a DC stable electrostatic field chopper probe which can be remotely located and easily positioned within process equipment to provide drift-free, highly accurate, noncontacting, spacing independent, voltage measurements in either ionized or non-ionized environments. Two probe types are currently available with the 542A-1 and the 542A-2: a side viewing probe and probe with a 45 degree angle.
In addition, a relay contact output changes state upon threshold detection. This signal can be connected to a process controlling device or other external equipment. A voltage output monitor and an 4-20 mA current loop output can provide additional signal interfacing to facility monitoring equipment. Either an USB port or RS-232 serial port can provide computer based control and monitoring.
WALKING TEST ADAPTER
The walking test adapter kit [CN 1K040] for the model 542A allows analysis of charge levels on the human body in support of EN 1815, Assessment of Static Electrical Propensity on Resilient and Textile Floor Coverings.
PERFORMANCEModel 542A-1 Model 542A-1 Accuracy Model 542A-2 Accuracy Drift with Time PROBES45° Orientation Type (542P-45D)
90° (side) Orientation Type (542P-S)
Probe Cable Length |
PRODUCT FEATURESThe Trek Model 542A Electrostatic voltmeter is microprocessor based and provides accurate noncontacting measurements of electrostatic surface voltage for ESD/EOS sensitive processes in either ionized or nonionized environments. The probes are chopper stabilized for drift-free operation. Alphanumeric LCD Display ZERO Control |
RESET Push Button ACCESSORIESAccessories Supplied Operator’s manual 6P/4C plug (N9056) Serial cable (BA108) Software CD-ROM (45833) Ground cord (N9044) Accessories Available In the USA, use the Trek AC/DC Adapter #L5111 or #L5133 (with ground connection). For all other line voltages, contact the factory. GENERALDimensions Weight Power Operating Conditions Power ON/OFF CERTIFICATIONTREK, INC. certifies that each Model 542A is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards. All specifications are subject to change.
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