Electrostatic Voltmeter - DOU YEE - #2

Range:......................................................±3000 volts, auto polarity.

Accuracy:*...............................................0.1%, ±0.003%/°C over +20 to +40°C range (at recorder output). Useable

to +50°C.

Speed of response:*.................................For typical input step: <3ms

for 1 kV step: <2^ms

for 2kV step: <3^ms

for 3kV step: <4ms

(10% to 90%) (10% to 90%)

(10% to 90%) (10% to 90%)

Settling time:............................................< 3/ims to 1 % of 1 kV step input.

Frequency response:.................................Small signal frequency response typically ±3db to > 300Hz.

Drift*:......................................................<0.01V/hr after 1 hr warm-up (0.003V/hr typical). Not measurably

affected by 10°C temperature variation or changes between 10% and 90% relative humidity.

Noise:* ....................................................<0.3V rms or 2 volts peak-to-peak wide band (bandwidth restricted

to<1kHz) referred to input.

Surface resolution:....................................Determined by probe aperture size and surface-probe separation. Standard

type 1034E & S probes with 0.07" (1.75mm) aperture will resolve a 0.10" (2.5mm) spot at 0.02" (0.5mm) separation.

Recorder output:.......................................Compressed analog output is input divided by 100, 200 or 1000 (factory

selectable). Typical maximum dynamic range at isolated BNC connector is ±18 volts for external loads greater than 10kQ.

Output filter:............................................Bessel low pass filter with 0.7ms constant delay.

Size:.........................................................1.7 x 8.2 x 15.1 inches (44 x 208 x 384mm), 1.75" rack mounting available

(1 or 2 per rack).

Weight:....................................................4 lb. (1.8kg)

Power requirement:..................................100, 115, 230 VAC, ±10%, 50/60Hz, 15 watts.

Pending approvals:...................................CE, UL

* Dependent on specific probe model, probe-surface separation and environment. Specifications shown are for standard Type 1034E or S probes in a normal laboratory atmosphere. Separation for accuracy and response speed tests is Vs" (3mm) and for noise and drift tests, 0.13mm (0.005"). Performance generally improves in controlled environments and may be degraded under exceptional dirty or dusty conditions or in ambiance of unstable gaseous constituents.

Monroe Electronics Type 1034E (end-viewing) or 1034S (side-viewing) probes are 0.35" (9mm) x 0.35" (9mm) x 2.85" (72.5mm) in length. Add 0.s" (20mm) length for cable at minimum bend radius. Contains 1kHz tuning fork chopping driver and onboard hybrid microcircuit preamp. Useable from -50°C to +80°C. Optional probe configurations are available for high or low resolution and transparent probes for light decay measurements. Length of probe cable is 10 ft. (3.05 meters). Provision has been made for air or inert gas purging of probe. Rear mounted connector on instrument is standard; front panel connector is optional. Standard basic instrument package includes Model 279 electrostatic voltmeter, line cord and instruction manual. Unit is calibrated independent of probe and includes certificate of NIST traceability. Interchangeable Model 1034 probe (type specified by customer) is sold separately.

100 HOUSEL AVENUE LYNDONVILLE, NY 14098 800 821 6001

Copyright® 2000 Monroe Electronics, Inc. 279.web.DS.111300-RCA

716 765 2254 FAX 716 765 9330

Specifications subject to change without notice

Printed in USA