Model 523 (±20kV) Hand-Held Electrostatic Voltmeters provide accurate, noncontacting measurements of electrostatic surface voltage for ESD applications in either ionized or non-ionized environments.
These two voltmeters utilize a measurement technique that overcomes the disadvantage of the typical hand-held field-meter by providing surface voltage measurements which are essentially independent of the sensor probe-tomeasured surface spacing.
Accurately measures surface voltage at a wide range of spacings
No need to maintain a fixed spacing
Chopper stabilized for drift-free operation in ionized environments
NIST-traceable Certificate of Calibration provided with each unit
CE compliant
Measurement Range：0 to ±20 kV
Measurement Accuracy: Better than ±5% of full scale over the entire recommended probe-to-surface separation range of 30 mm to 60 mm
Voltage Display Range: A 3 ½ digit liquid crystal display
Resolution：10 V
Zero Offset：Less than ±4 count
Power On/Off: Push-button switch
Stability
Drift with Time： Less than 600 ppm/hour, noncumulative
Drift with Temperature： Less than 600 ppm/°C
Operating Time： Approximately 8 hours with a full battery
Hold： A momentum push-button will command the voltage display to hold the value displayed until the switch is released
Sampling Rate： 2.5 readings per second
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
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 with battery
