Trek 370TR DC Stable Electrostatic Voltmeter - Manual

Model 370TR
DC-Stable Electrostatic Voltmeter
The Trek Model 370TR is a
precision electrostatic voltmeter
with the unique capability of
making noncontacting surface
voltage measurements in the
range of 0 to ±3 kV DC or peak AC.
The 370TR 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.
The Model 3629A Transparent probe permits light to pass through
the probe to provide simultaneous radiation and measurement of
a surface. This is useful for photosensitive surface studies such as
‘time of flight’ measurements of photoconductor surfaces.
A Digital Enable connection permits remote ON/OFF
measurement capability. An automatic gain control feature of the
370TR eliminates the need for manual adjustment when changing
probes or when changing the probe to measured surface
separation. The 370TR also features one-step, push-button
zeroing. When the ZERO button on the front panel is pressed, the
370TR 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 replica 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 ms to 30 minutes.
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High speed of response:
Less than 200 µs for a 1
kV step
Transparent probe
enables simultaneous
radiation and
measurement of
surfaces
Measurement range:
0 to ±3 kV DC or peak AC
Measurement accuracy:
Better than 0.05% of
full scale
Automatic gain control
eliminates manual
adjustment
One step, push-button
zeroing
Precision voltage
monitor output
Remote ON/OFF
operation capability
Optional data acquisition
module
compliant
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Measurement and Power Solutions TM
www.trekinc.com