Monroe Electronics Electrostatic Voltmeter - Isoprobe® - model 244A - Manual (Page 22)

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APPENDIX IV
MODELS 1017E/22D AND 1017S/22D GRADIENT
ADAPTERS
A. SPECIFICATIONS:
Range:
With Model 244 or 279; 0 to ±3000 volts/mm (Refer to Note 1)
Accuracy: Better than 2% (Refer to Note 2)
Drift: <0.01 V/mm per hour (Refer to Note 2)
Noise: With Model 244 or 279; <0.3 V/mm RMS <2V/mm p-p referred to input
(Refer to Note2)
Speed of
Response: With Model 244 or 279; <4 mS max. 3 mS typ., 10% to 90%
Resolution: Approx. 3 cm dia. spot (Refer to Note 2)
Dimensions: 1 9 /
32
” (40mm) dia. x 1 1 /
8
” (29mm) high
Attitude: End-view is axial
Side-view is radial
NOTES:
1.) Limited to approx. 2kV/mm air gap breakdown
2.) Specified uncontaminated atmosphere at 1 centimeter probe-to-surface
separation
B. DESCRIPTION:
These adapters are designed to convert an ISOPROBE  Electrostatic Voltmeter
into an Electrostatic Fieldmeter. This fieldmeter mode of operation makes
possible non-contacting measurement of surface potentials of virtually any
magnitude so long as the probe is mounted at the proper distance.
The adapters consist of a metal cup with a carefully chosen aperture, through
which the Model 1017, or 1034 probe “looks”, attached to a small insulated box
designed to slip over the end of the probe and a 10 foot flexible grounding wire
which is attached to the metal cup.
C. INSTALLATION:
1017E/22D: Using a 1/16” Allen wrench, retract the setscrew enough to allow the end of
the probe to slide in to the square opening until the apertures align. Gently re-tighten the
setscrew against the probe case and back off 1/4 turn. DO NOT OVERTIGHTEN. The
adapter is now prepared for calibration.