Trek 323 DC Stable Electrostatic Voltmeter - Manual (Page 2)

Performance Features (cont.) Features (cont.)
General
Features
Measurement Range Probe-to-Surface Separation Voltage Monitor Output
0 to ±100 V DC or peak AC. 1 mm to 3 mm. A buffered 0 to ±10 V output
providing a representation of the
Response Speed Control
Sensitivity measured voltage.
A front panel potentiometer that
5 mV. Scale Factors
adjusts the speed/noise inter-
10:1 of the measured voltage or
relationship of the Model 323 Accuracy 20:1 of the measured voltage
AC response. DC Accuracy (switch selectable).
Better than 0.05% of full scale. Output Current
Voltage Display
Voltage Monitor Output 5 mA.
3½ digit LED display.
Better than ±0.05% of full scale. Output Impedance
Range
Voltage Display 0.1 W, nominal.
Switch selectable for ±10 V
Better than or equal to ±2 counts,
or ±100 V full scale.
referred to the voltage monitor.
Resolution
10 V Range
Speed of Response (10% to 90%)
Dimensions 0.01 V.
Less than 300 ms for a 100 V step
108 mm H x 223 mm W x 380 mm D 100 V Range
(adjustable).
(4.25" H x 8.75" W x 15" D). 0.1 V.
Zero Offset
Stability Weight
±2 counts, referred to the
Drift with Time 3.6 kg (8 lb).
voltage monitor.
Less than 50 ppm/hour,
Sampling Rate Voltage Monitor Connector
noncumulative.
3 readings per second. BNC connector.
Drift with Temperature
1:1 Monitor Output
Ground Receptacle Drift/Spacing Null Adjustment
Less than 10 mV/°C
Banana jack.
10:1 Monitor Output
AC Line Cord Receptacle Less than 5 mV/°C
Standard three-prong line cord with 20:1 Monitor Output
integral fuse holder. Less than 5 mV/°C
Voltage Monitor Output (1:1 ratio)
Line Supply
A buffered 0 to ±100 V output
Factory set for one of two voltage
providing a representation
ranges: 90 to 127 V AC or 180 to
Null Voltage Source
of the measured voltage.
250 V AC, at 48 to 63 Hz
A calibrated 10-turn dial representing
Scale Factor
(specify when ordering).
a 10 volt supply, with switch
1:1 of the measured voltage.
selectable polarity, used to produce Operating Conditions Output Noise
zero volts output when the probe is Temperature Less than 20 mV rms (measured
coupled to a known zero volt surface. 0 °C to 40 °C. using the true rms feature of the
Range Relative Humidity
Hewlett Packard Model 34401A
±10 volts To 90%, noncondensing. digital multimeter).
Accuracy
Output Current
1%
5 mA.
Resolution
Output Impedance
20 mV.
100 W, nominal.
This back panel adjustment minimizes
the variation in monitored voltage
values as the probe to test surface
spacing changes.
Model 10/40A Specifications
Model 323 Specifications
Copyright ã 2011 TREK, INC.
All specifications are subject to change.
1138/DEC
Model 323 Ordering Information
All specifications are with a Model 6000B-8 probe with a probe-to-surface separation of 1 mm.
Model 323 Electrostatic Voltmeter Trek Certification
Probes
Item Part No.
Model 323-L (90 to 127 V AC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 323-L
Model 323-H (180 to 250 V AC) . . . . . . . . . . . . . . . . . . . . . . . . . . 323-H
Model 6000B-8 Probe (side-viewing, round body) . . . . . . . . . . 17054
Model 6000B-16 Probe (side-viewing, square body) . . . . . . . . 17047
TREK, INC. certifies that each Model 323 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.
TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK
(fax) • www.trekinc.com • [email protected] 716-438-7555 • 716-201-1804