This non-contacting electrostatic voltmeter provides precision and value for surface voltage measurements in the range of ±3 kV DC or peak AC. Model 347 utilizes a field-nulling technique for non-contacting voltage measurement that achieves DC stability and high accuracy, with no need for fixed probe-to-surface spacing. This permits the accurate measuring of stationary or moving surfaces. Patented probe design enhances noise and drift performance in the presence of contaminating particulate or under conditions of high humidity and/or wide temperature ranges.
Superb noise and drift performance
Precision voltage monitor output
Monitor provides a low voltage replica of the measured electrostatic potential for
monitoring purposes or for use as a feedback signal in a closed loop system
Digital Enable allows an external device to turn the internal HV power supply on/off
Well-suited for automated or computer-controlled systems
Easy-to-read LED display
Large selection of optional probes offer versatility (order separately)
Can be operated on a bench top, or with optional hardware, in a standard 19-inch rack
NIST-traceable Certificate of Calibration provided with each unit
CE compliant
Measurement Range: 0 to ±3 kV DC or peak AC
Measurement Accuracy
Voltage Monitor Output: Better than ±0.05%
Voltage Display: Better than ±0.1% of full scale, referred to the voltage monitor
Speed of Response(10% to 90%): Less than 3 ms for 1 kV step
Stability
Drift with Time Less than 100 ppm/hour, noncumulative
Drift with Temperature Less than 100 ppm/˚C
