Monroe-electronics Electrostatic Voltmeter - Isoprobe® - model 244A Manual do Utilizador descarregar pdf (Página 5)

SECTION 1

SPECIFICATIONS

A. APPLICATIONS:

The Model 244A instrument permits accurate voltage measurements of

electrostatic or other high impedance sources without physical contact. It utilizes

an electrostatic chopper for low drift, and negative feedback for accuracy and

probe-to-surface spacing insensitivity.

B. FEATURES:

■ Integrated Solid State Circuitry

■ Good Accuracy

Stability

Reliability

■ Easy Maintenance

■ ±3kV Input Range

■ Fast Speed-of-Response

■ Specified AC Performance

■ Low Noise

■ Digital Liquid Crystal Display

■ HV/1000 Recorder Output

■ Connectable for unlimited multiple channel operation

C. RANGE: 0 to ±3000 volts DC.

D. STATIC ACCURACY:

The recorder output accuracy referred to the input is better than 0.10% of reading

or 0-1V whichever is greater. (Probe-to-surface spacing .020”, 0.5mm).

E. SPEED-OF-RESPONSE:

10-90% probe-to-surface spacing .040" (1.02mm), gain adjusted for critical

damping.

Speed of Response

typ. max.

1kV Step .......................................... 1.5 msec ................. 2.5 msec

2kV Step .......................................... 2.0 msec ................. 3.5 msec

3kV Step .......................................... 3.0 msec ................. 4.5 msec

F. SETTLING TIME:

typical - 3.5msec. 0-99% 1kV step, 040"(1.02mm) gain adjusted for critical

damping.

15 msec. 0-99.9% 1kV step, .040"(1.02mm)

1 2 3 4 5 6 7 8 9 10 ... 23 24

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Monroe-electronics Electrostatic Voltmeter - Isoprobe® - model 244A Manual do Utilizador Página 5