• Trek 541A 非接觸式靜電電壓表

Trek 541A 非接觸式靜電電壓表

• Chopper probe is DC-stable with or without incident air ion 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
• Voltage output monitor for remote monitoring or control
• USB and RS-232 serial ports
• NIST-traceable Certificate of Calibration provided with each unit
• Optional Walking Test Adapter kits available
型號 : Trek 541A

The Trek Model 541A Electrostatic Voltmeter (pictured with the Model 541PR-S probe) provides accurate non-contacting 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, the negative peak voltage and additional menu information.

• Measurement Range 

    Model 541A-1: ±1 kV DC or peak AC 

    Model 541A-2: ±100 V DC or peak AC 

• Measurement Accuracy: Better than ±1% of full scale over a probe-to-surface separation of 2.5 mm ± 1mm 

• Alphanumeric LCD Display: 20 x 4 characters


Alarms Activated if measured voltage exceeds preset threshold limits; positive/negative limits may be programmed separately
    Visual Front-panel LEDs illuminate when thresholds are reached  
    Audible ON/OFF programmable pulsating or continuous tone. (+) and (-) alarms have different tone rates for the pulsating tone selection
     Alarm Relay Output                                        Form C relay contact with barrier strip terminals; changes state when voltage thresholds are met or exceeded 
    Alarm Digital Output TTL output with a TTL low (0 to 0.8 V) as the alarm “ON” status; TTL high (2.5 to 5.0 V) indicates a normal condition
Reset Button Resets alarms and peak hold to zero 
Zero Control Adjustable to produce zero volts when probe coupled to a known zero voltage source
Alphanumeric LCD Displa                                                 20 character by four line (20x4) LCD displays the present voltage and holds the most positive and most negative values
Ground Receptacle Banana jack
Serial Port and USB Port Provides control of specific functions and acquires sensor data utilizing Trek software and a PC connected to the RS-232 serial port or the USB Type B port (connectors are on back panel)
Current Output Provides a current of 4 mA to 20 mA representing -1 kV to +1 kV (541A-1) and -100 V to +100 V (541A-2)

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