Trek Equipment

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Electrostatic Voltmeter Sensors & Monitors
Model : Trek 541 & 542
Microprocessor based
LCD screen displays of present voltage, holds highest positive and negative measured values.
Voltage output monitor for remote monitoring or control
RS-232 serial communication port
0.1% of resolution

Measurement Range
Model 541-1 : 0 to ±1 kV DC or peak AC
Model 541-2 : 0 to ±100 V DC or peak AC
Model 542-1 : : 0 to ±10 kV DC or peak AC
Model 542-2 : : 0 to ±20 kV DC or peak AC

Measurement Accuracy
Model 541 : 1% of full scale
Model 542 : better than 5% of reading, ±0.2% of full scale

Recommended probe-to-surface measurement
Model 541 : 2.5mm
Model 542-1 : 15mm to 30mm
Model 542-2 : 30mm to 60mm

Speed of response
Model 541-1 : <50ms for 1kV step
Model 541-2 : <50ms for 100V step
Model 542 : < 50ms for 1kV step
  for Model 541
for Model 542



Hand-held Electrostatic Voltmeter
Model : Trek 520 series
Higher spatial resolution capability of measuring charge accumulation in difficult-to-reach locations or small surface areas
More accurate surface voltage measurements at wider range of spacing
Chopper stabilized for drift-free operation in ionized environments
Uses current-nulling AC feedback technology (patented)
Measurement accuracy of ±5% over full scale

Measurement range
Model 520 : 0 to ±2 kV DC
Model 523 : 0 to ±20 kV DC

Recommended probe-to-surface measurements
Model 520 : 5mm to 25mm
Model 523 : 30mm to 60mm
 
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