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.
An optional data acquisition module is available, featuring an IEEE-488 compatible interface, 14-bit resolution, 12-bit accuracy, and a programmable sampling period from 10 µs to 30 minutes.
The Model 370 can be operated on a bench top or, with optional hardware, in a standard 19-inch rack.
Data Acquisition Module (Optional)
Provides data output using an IEEE-488 compatible interface.
All specifications are with a 3800E-2 probe with a probe-to-surface separation of 2 mm unless otherwise noted.
Speed of Response (10% to 90%)
Voltage Monitor Output
Probe-to-Surface Separation (recommended)
Voltage Monitor Connector
AC Line Cord Receptacle
TREK, INC. certifies that each Model 370 is tested and calibrated to specifications using measurement equipment traceable to the National Institute of Standards and Technology or traceable to consensus standards. A Certificate of Calibration accompanies each instrument when it is shipped from the factory.
All specifications are subject to change.