Monroe-electronics Electrostatic Voltmeter - Isoprobe® - model 244A Manual de usuario

114 Instruction Manual for Monroe Electronics, Inc. Isoprobe® Electrostatic Voltmeter Model 244A Specifications subject to c

10 SECTION 3 CONTROLS AND INDICATORS FRONT PANEL CONTROLS - FIG. 3-1 A. STANDBY/OPERATE SWITCH: Controls the operating condition of the unit. 1

11 REAR PANEL CONTROLS - Fig. 3-2 H. RECORDER OUTPUT: Output is 0V±3V for full scale. A BNC connector is provided on the rear panel. The output

12

13 SECTION 4 OPERATION CAUTION: Verify that instrument operating voltage matches local power line voltage. Refer to Section 2. PRECAU

14 c. While closing the switch, observe the instrument output and adjust GAIN for fastest speed-of-response with minimum overshoot in st

14 SECTION 5 THEORY A. GENERAL: Principle of Operation (See Figure 5-1) The electrostatic electrode "looks" at the surface under measu

15 Isoprobe® Electrostatic Voltmeter Simplified Block Diagram FIGURE 5-1

16 APPENDIX I MODEL 1017 PROBE MOUNTING The Monroe Electronics, Inc. Model 1017 Miniature Probe is intentionally constructed with no m

17 One possible configuration is illustrated in Figure A-l-1. For general bench use burette or utility clamps attached to a ringstan

18 APPENDIX II 10X GAIN MODIFICATION (For use with high resolution probes) Due to the smaller aperture in high resolution probes (1017E

2 TABLE OF CONTENTS 1. WARRANTY AND RETURN ... PAGE 3 2. BEWARE: HIGH VOLTAGE ...

19 APPENDIX III MODEL 1017 PROBE CLEANING PROCEDURES DISASSEMBLY AND CLEANING: It is impossible for the sensitive aperture in the probe to be co

20 Cleaning Procedure #2 NOTE: Use this procedure only if aperture diameter is 1.75 mm or greater. 1. Disconnect probe cord from main unit. 2

21 APPENDIX IV MODELS 1017E/22D AND 1017S/22D GRADIENT ADAPTERS A. SPECIFICATIONS: Range: With Model 244 or 279; 0 to ±3000 volts/mm (Refe

22 1017S/22D: Remove the #0-80 x 3/32” machine screw from the end of the probe nearest the aperture end of the probe. Replace the screw just r

23 M O D E L 2 4 4 A K O U T P U T S T A G E PREVISION NOTES* MODEL 244AK The Monroe Electronics Model 244AK is virtually identical to Mo

3 WARRANTY Monroe Electronics, Inc., warrants to the Owners, this instrument to be free from defects in material and workmanship for a period of

4 BEWARE - - HIGH VOLTAGE GENERAL: Monroe Electronics ISOPROBE instruments are non- contacting voltage followers. This means an instrument indic

5 SECTION 1 SPECIFICATIONS A. APPLICATIONS: The Model 244A instrument permits accurate voltage measurements of electrostatic or other h

6 G. FREQUENCY RESPONSE: Small signal bandwidth is related to amplitude. At 11 5 volts RMS bandwidth is typically -3db at 300 Hz. H. DRIFT: Dr

7 SECTION 2 INSTALLATION CAUTION: Before plugging instrument in, make certain that it is matched to local power line voltage. The

8 C. PROBE-TO-SURFACE SPACING: CAUTION: When operating at probe-to-surface spacing of less than 0.125 inches (3mm) -- BEWARE OF PROBE-TO-SURFAC

9 D. SYSTEM GROUNDING: The instrument is normally grounded via power cord and the potential measured is referenced to ground. A rear panel gr