The Trek Model 344 is a precision electrostatic voltmeter for making noncontacting surface voltage measurements in the range of 0 to ±2 kV DC or peak AC.  Industrial applications include radiation effect  studies, R&D of the electrophotographic processes, and charge accumulation monitoring of the semiconductor production process.

The Model 344 patented probe design eliminates the need for close tolerance components. This significantly improves noise and drift performance, both in the presence of contaminating particulates and under conditions of high humidity and wide temperature ranges.

Line Supply
Factory set for one of three ranges: 100, 115, or 230 V AC, at 48 to 63 Hz
(specify when ordering).

Operating Conditions Temperature
0°C to 40°C.

Relative Humidity
To 90%, noncondensing.

Dimensions
64 mm H x 220 mm W x 270 mm D
(2.5" H x 8.7" W x 10.6"D).

Weight
2 kg (4.4 lb).

Voltage Monitor Connector
BNC coaxial connector.

Ground Receptacle
Banana jack.

AC Line Cord Receptacle
Standard three-prong line cord receptacle.

Power ON/OFF
A toggle switch