Máy đo điện áp tĩnh điện Trek 370
The Trek Model 370 is a precision electrostatic meter with the unique capability of making noncontacting surface voltage measurements in the range of 0 to ±3 kV DC or peak AC.
The 370 employs an electrostatic field-nulling technique which achieves high DC stability and high measurement accuracy even if the probe to measured surface spacing changes. This permits measurements of either stationary or moving surfaces without the need to establish fixed spacing to maintain accuracy.
An automatic gain feature of the Model 370 eliminates the need for manual adjustment when changing probes or when changing the probe to measured surface separation.
The Model 370 also features one-step, push-button zeroing. When the ZERO button on the front panel is pressed, the Model 370 automatically adjusts the output to zero volts when the probe is coupled to a known zero volt surface.
A precision voltage monitor provides a low-voltage representation of the measured electrostatic voltage for external monitoring purposes, or for use as a feedback signal in a closed-loop system.