Fluke 893AR Digitale multimeter
Fabrikant:
Model:
893AR
Datum:
1969
Categorie:
Groep:
Omschrijving:
AC-DC Differential Voltmeter

Informatie

The Fluke Model 893A and AR AC-DC Differential Voltmeters provide conventional or differential measurements of ac voltages from one millivolt to 1100 volts ac and dc voltages from 10 microvolts to 1100 volts dc. Conventional (TVM) measurements are made with an accuracy of ±3% of the selected range to initially determine the magnitude of the measured voltage. The differential (NULL) mode is then used with an improved accuracy of up to 250% over that of the conventional mode to determine the exact value of the measured voltage. One linear meter-scale greatly simplifies all measurements made with the instrument. Whenever the instrument is operated on the differential mode, an inline digital readout representing the magnitude of the measured voltage is available from the front panel Read-out dials. Two versions of the instrument are available and are identified as the Model 893A or Model 893AR, The Model 893A is a portable unit, half-rack in width, with a tilt-down carrying handle. This handle detents into the instrument’s feet to serve as a tilt-bale during bench-top use of the instrument. The Model 893AR is also a portable unit, but is of proper width for installation in a standard electronic equipment rack. Carrying of this instrument is provided by two front panel handles. A tilt-down bale located on the bottom of the instrument facilitates bench-top use of the instrument, A rechargeable battery and recorder output options are also available for either version of the instrument. These options can be installed at the factory, upon request, or in the field. Option Kit 893A-7Ü01 comprises the rechargeable battery pack and, when installed in the instrument, is identified as the -01 option on the rear panel decal. Option Kit 893A-7002 comprises the recorder output and, when installed in the instrument, is identified as the -02 option on the rear panel decal.

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Service-en gebruikershandleiding
Handleidingen type:
Service-en gebruikershandleiding
Pagina’s:
104
Grootte:
6.81 Mbytes (7143446 Bytes)
Taal:
english
Herziening:
5
Handleidingen-ID:
294272
Datum:
01 mei 1975
Kwaliteit:
Gescand document alle leesbaar.
Upload datum:
16 januari 2018
MD5:
d784c5592f6226a72e5a4e30bfee72bb
Downloads:
670

Informatie

I INTRODUCTION AND SPECIFICATIONS 1-1 1-1. Introduction ... 1-1 1-5. Electrical Specifications ... 1-1 1-6. Differential Voltmeter ... 1-1 1-7. Conventional Voltmeter (TVM) ... 1-2 1-8. General Specifications ... 1-2 1-9, Environmental Specifications ... 1-2 1-10. Mechanical Specifications. . ... 1-3 H OPERATING INSTRUCTIONS 2-1 2-1. Introduction ... 2-1 2-4. Operating Features ... 2-1 2-6. Operation from 115/230 volt AC Power Lines ... 2-1 2-9. Preliminary Operating Procedures ... . 2-1 2-11. Operational Test ... 2-1 2-15, Operating Notes ... 2-4 2-16. Ground Loop Currents ... 2-4 2-18. Common Mode Voltages ... 2-4 2-20. Use of Shorting Link ... 2-4 2-22. DC Differential Off-Null Input. Resistance . . . 2-4 2-24. TVM Mode Operation ... 2-5 2-26, Differential Mode Operation ... 2-5 2-28. Optional Recorder Output Operation . ... 2-6 2-30. Applications ... 2-31. Introduction ... 2-6 2-33, Measurement of Voltage Excursions About a Nominal Value ... . 2-6 2-35. Measurement of Extremely High Resistances . 2-6 2-37. Operation as a Null Detector ... 2-7 2-39. Measurement of DBM ... 2-7 m THEORY OF OPERATION 3-1 3-1. Introduction ... 3-1 3-3. Block Diagram Analysis ... 3-1 3-4. Introduction ... 3-1 3-6. Conventional TVM Mode ... 3-1 3-9. Differential Null Mode ... 3-1 3-12. Optional Recorder Output ... 3-2 3-14. Circuit Analysis ... 3-2 3-15. Introduction ... 3-2 3-17. Power Supply/Battery Charger ... 3-2 3-20. The Reference Supply ... 3-3 3-28. Kelvin-Varley Divider ... 3-4 3-33. AC Converter ... 3-5 3-38. Null Detector ... 3-6 3-43. DC Input Divider ... 3-7 3-46. Optional Recorder Output ... 3-7 IV MAINTENANCE 4-1 4-1. introduction ... 4-1 4-5. Service Information ... 4-.1 4-8. Disassembly Instructions ... 4-2 4-9. The Model 893A Disassembly Instructions . . 4-2 4-11. The Model 893AR Disassembly Instructions . , 4-3 4-13. General Maintenance ... 4-3 4-14. Periodic Cleaning ... 4-3 4-17. Fuse Replacement. . ... 4-3 4-19. Battery Replacement ... 4-3 4-21. Precalibration and Troubleshooting . ... 4-7 4-22. Introduction ... 4-7 4-25. Reference Amplifier/Reference Inverter Checks ... 4-7 4-28. Null Detector/Divider Checks ... 4-9 4-31. Kelvin-Varley Divider Checks ... 4-10 4-34. Recorder Output Option Checks. ... 4-10 4-37. AC Converter Checks . ... 4-1.1 4-40. Calibration Procedures ... 4-12 4-41. Introduction ... 4-12 4-45. Meter Mechanical Zero Adjust . ... 4-12 4-47. Zener Reference Supply Calibration ... 4-14 4-49. Null Detector Calibration ... 4-14 4-51. Kelvin-Varley Divider Calibration . ... 4-15 4-53. DC Voltage Range Calibration ... 4-15 4-55. AC Converter Calibration ... . 4-16 V LIST OF REPLACEABLE PARTS 5-1 5-1. Introduction ... 5-1 5-4. Column Description ... 5-1 5-5. How to Obtain Parts ... ... 5-2 5-8. List of Abbreviations ... 5-2 5-9. Serial Number Effectivity ... 5-37 APPENDIX A JOHN Fluke MFG. CO. WARRANTY LIST OF SALES REPRESENTATIVES LIST OF FACTORY AUTHORIZED SERVICE CENTERS SCHEMATIC DIAGRAM

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