Trek 368A DC Stable Noncontacting Electrostatic Voltmeter - Manual (Page 2)

Performance Features General (cont.)
General
Measurement Range Zero Control Dimensions
0 to ±2 kV DC or peak AC. A 10-turn control to null offsets that Stand-Alone Instrument
may be present at the voltage monitor 133 mm H x 113 mm W x 341 mm D
Measurement Accuracy output when the Model 368A is (5.3" H x 4.5" W x 13.5" D).
Half Rack (holds up to two channels) Voltage Monitor Output measuring zero volts.
133 mm H x 271 mm W x 353 mm D Better than ±0.1% of full scale.
(5.3" H x 10.7" W x 13.9" D) DPM Voltage Display Voltage Display
Full Rack (holds up to four channels) Better than ±0.15% of full scale, 3 ½ digit LED display.
133 mm H x 483 mm W x 353 mm D
±1 digit referred to the voltage Range
(5.3" H x 19" W x 13.9" D). monitor. 0 to ±1999 V.
Resolution
Weight Speed of Response (10% to 90%) 1 V.
Stand-Alone Instrument
Zero Offset Less than 200 ms for a 1 kV step
2 kg (4.4 lb).
Better than or equal to ±1 count, change.
Half Rack
referred to the voltage monitor.
1.5 kg (3.3 lb), add 1.5 kg (3.3 lb)
Sampling Rate Stability
per channel.
2.5 readings per second. Drift with Time
Full Rack
Less than 100 ppm/hour,
2.5 kg (5.5 lb), add 1.5 kg (3.3 lb) Voltage Monitor Output noncumulative.
per channel. A BNC provides a low-voltage Drift with Temperature
replica of the measured Less than 200 ppm/°C.
Ground Receptacle
voltage.
Banana jack. Scale Factors Probe-to-Surface Separation
1/200th or 1/1000th of the 2 mm ±1 mm (recommended).
AC Line Cord Receptacle
measured voltage (switch
Standard IEC 320 three-prong AC line
selectable). Calibration Probe (standard)
connector with an integral fuse holder.
potentiometers for both scales Aperture Size
are accessible from the front 3800E-2 end viewing
Power Requirements
panel. 1.85 mm diameter.
Line Voltage
Output Noise 3800S-2 side viewing
Factory set for one of two ranges:
Less than 25 mV rms 2.35 mm diameter.
90 to 127 V AC or 180 to 250 V AC,
(measured using the true Cable Length
at 50/60 Hz
rms feature of the Hewlett 3 m (10 ft), nominal.
(specify when ordering).
Packard Model 34401A digital
Power Consumption
multimeter).
35 VA, maximum.
Output Impedance
Less than 0.1 W.
Operating Conditions
Temperature
Power ON/OFF
0°C to 35°C.
Two position toggle switch.
Relative Humidity
To 85%, noncondensing.
Altitude Note: The probe body is driven to match
To 2000 meters. the measured voltage value and must Voltage Monitor Connector
be insulated from ground. BNC connector.
Model 10/40A Specifications
Model 368A Specifications
Copyright ã 2011 TREK, INC All specifications are subject to change. 1122/DEC
Model 368A Ordering Information
All specifications are with a probe to surface separation of 2 mm.
Model 368A Probes
Item Part No.* Item Part No.
Stand-Alone Instrument . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368ASU Standard
Model 3800E-2 (end viewing) . . . . . . . . . . . . . . . . . . . . . . . . . . 17351
Half-Rack, One Channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368ASX
Model 3800S-2 (side viewing) . . . . . . . . . . . . . . . . . . . . . . . . . . 17350
Half-Rack, Two Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368ADX
High-Temperature (up to 60°C)
Full-Rack, One Channel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368AS
Model 3870ET-2 (end viewing) . . . . . . . . . . . . . . . . . . . . . . . . . 17379
Full-Rack, Two Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368AD
Model 3870ST-2 (side viewing) . . . . . . . . . . . . . . . . . . . . . . . . . 17380
Full-Rack, Three Channels. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368AT
Full-Rack, Four Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 368AQ
Optional
*Add the suffix L for 90 to 127 V AC operation and the Model 3800EC-2 Probe Extension Cable . . . . . . . . . . . . . . . . . 17385
suffix H for 180 to 250 V AC operation.
W 5.6 mm
L C
H 5.6 mm
2.8 mm
L C
3800S-2
APERTURE 2.35 mm
(side viewing type)
3800E-2
APERTURE 1.85 mm
(end viewing type)
L C
3.5 mm
L C
TREK, INC. • 190 Walnut Street • Lockport, NY 14094 • USA • 800-FOR TREK
(fax) • www.trekinc.com • [email protected] 716-438-7555 • 716-201-1804