TREK Product - Model 520 Series HAND-HELD Electrostatic Voltmeter

Request a Quote for the Model 520

Request a Quote for the Model 523

Model 520 Series HAND-HELD non-contacting Electrostatic Voltmeter

Download Product Sheet

The Model 520 Series includes the Model 520 and Model 523.

The Trek Model 520 Hand-Held Electrostatic Voltmeter (ESVM) Series products provide accurate, noncontacting measurements of electrostatic surface voltage for ESD applications in either ionized or non-ionized environments. Industrial applications include measuring charge accumulation in the LCD manufacturing process or measuring static charge in semiconductor production. The Model 520 series ESVMs utilize a new measurement technique that overcomes the disadvantage of the typical hand-held fieldmeter by providing surface voltage measurements which are essentially independent of the sensor probe-to-measured surface spacing.

Model 520-1 ESVM
Over a spacing range of 5 mm to 25 mm, the 520 voltmeter provides better than a 5% voltage measurement accuracy, while the typical fieldmeter provides a voltage measurement error in excess of 50%. An optional voltage monitor output is available (Model 520-2).

Model 523 ESVM
Over a spacing range of 30 mm to 60 mm, the 523 voltmeter provides greater than a 5% voltage measurement accuracy, while the typical fieldmeter provides a voltage measurement error in excess of 50%.

The 520 series provides a measurement system which complies with standardized calibration equipment traceable to the National Institute of Standards and Technology. The 520 series hand-held voltmeters employ a slender sensor probe design that provides flexibility to make measurements in many locations which are impossible to reach using the large, bulky sensing surfaces of the typical hand-held fieldmeter. The slender design also allows for higher spatial resolution capability by allowing the measurement of small surface areas. A "hold" pushbutton retains the displayed measured voltage value for recording purposes.

General Information
An optional voltage monitor output is available for use on the Model 520.

Show/Hide Product Technical Information

Model 520-1
Performance

Measurement Range
0 to ±2 kV DC.

Accuracy
Better than ±5% of full scale over the entire recommended probe-to-surface separation range of 5 mm to 25 mm.

Dimensions
31 mm H x 59 mm W x 173 mm D
(1.2" H x 2.4" W x 6.8" D).

Weight
200 g (7 oz), with battery.

Model 520-2 Voltage Monitor Output
A 1.3 mm jack provides a low-voltage replica of the measured voltage.

Ratio
1/1000th of the measured voltage.

Speed of Response (10% to 90%)
Less than 25 ms for an input step change of 2 kV.

Output Impedance
47 W.

Model 523-1
Performance

Measurement Range
0 to ±20 kV DC.

Accuracy
Better than ±5% of full scale over the entire recommended probe-to-surface separation range of 30 mm to 60 mm.

Dimensions
31 mm H x 59 mm W x 183 mm D
(1.2" H x 2.4" W x 7.3" D).

Weight
200 g (7 oz), with battery.

Common Features

Power On/Off
A push-button switch.

Stability

  Drift with Time
  Less than 600 ppm/hour, noncumulative.

  Drift with Temperature
  Less than 600 ppm/°C.

Operating Time
8 hours with a new battery.

Hold
A momentum push-button will command the voltage display to hold the value displayed until the switch is released.

Common Features (Con’t.)

Voltage Display
3 ½ digit liquid crystal display.
  Range (Model 520)
  0 to ±1999 V.
  Range (Model 523)
  0 to ±19.99 kV.
  Resolution (Model 520)
  1 V.
  Resolution (Model 523)
  10 V.
  Zero Offset
  Less than ±1 count.
  Sampling Rate
  2.5 readings per second.

Zero Offset
Less than ±4 counts.

Power Requirements
One (1) 9-volt NEDA 1604 battery, IEC 6R61 battery, or equivalent.

Ground Receptacle
Snap-on connector.

Operating Conditions
  Temperature
  15°C to 35°C.
  Relative Humidity
  To 85%, noncondensing.

CERTIFICATION

The 520 series provides a measurement system which complies with standardized calibration equipment traceable to the National Institute of Standards and Technology. A Certificate of Calibration accompanies each instrument when it is shipped from the factory.

CE COMPLIANCE
The Model 520 series electrostatic voltmeters conforms to the emission standards set by EN-55011:1998 (Group 1, Class B), the immunity standards set by EN-50082-1:1998, and the safety standards set by the EN 61010-1 with all amendments included as of 1995.

Pollution Category
Degree 1: Operate in environments where no pollution or only dry, nonconductive pollution occurs.

All specifications are subject to change.

Products > ESD > Electrostatic Voltmeters for ESD