LCD voltmeter 542A

portableelectrostatic

The Trek Model 542A Electrostatic Voltmeter (pictured with the Model 542P-S probe) provides accurate noncontacting measurements of the electrostatic surface voltage associated with EOS/ESD processes. The instrument is configured with a miniature electrostatic field chopper probe that can be remotely located and easily positioned within process equipment to provide highly accurate, non-contacting, DC-stable, spacing-independent voltage measurements in either ionized or non-ionized environments. A 20x4 alphanumeric LCD screen displays the present measured voltage, the positive peak voltage value, the negative peak voltage value and additional menu information. Key Specifications Measurement Range Model 542A-1: ±10 kV DC or peak AC Model 542A-2: ±20 kV DC or peak AC Measurement Accuracy Better than ±5% of the reading ±0.2% of full scale over a probe-to surface separation of Model 542A-1: 15 mm to 30 mm Model 542A-2: 30 mm to 60 mm Alphanumeric LCD Display: 20 x 4 characters Typical Applications Include Semiconductor LCD Electronic assembly ESD-sensitive processes Features and Benefits Chopper probe is DC-stable with or without incident air flow Drift-free measurements LCD screen displays present voltage and holds the most positive and negative values Visual and audible alarms activate when the preset voltage threshold levels are reached Analog voltage monitor output USB and RS-232 serial ports NIST-traceable Certificate of Calibration provided with each unit CE compliant Optional Walking Test Adapter kit available