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Keithley 503C Analog multimeter
Manufacturer:
Model:
503C
Date:
1977
Class:
Type:
SubType:
Milliohmmeter

Information

The model 503 Milliohmmeter permits rapid, accurate, low resistance tests. It combines a ruggedness and ease of operation not possible with bridges. Measurements are read directly on a mirror scale meter. Balancing is unnecessary, calibration stability is excellent, and the instrument is not damaged by overload. Features include: 13 full-scale ranges from 0.001 to 1000 ohms; accuracy of ±1% of full-scale meter indication and ±0.5% of full-scale output voltage; no zero drift; rise time of 0.25 second to 90% of final value; sample dissipation of less than 10 microwatts; 100-millivolt dc output for chart recordings or control functions; and front panel calibration. The measurement technique involves an ammeter-voltmeter method using an ac test current. Typical uses include measurements of internal resistance of dry cells, resistivity profiles of thermo-electric materials; measurements of temperatures with thermistors; dry-circuit testing of contacts, and safe measurement of fuses and squibs.

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Service and User Manual
Manual type:
Service and User Manual
Pages:
36
Size:
1.76 Mbytes (1850482 Bytes)
Language:
english
Revision:
Manual-ID:
Date:
1977 05 01
Quality:
Scanned document, reading partly badly, partly not readable.
Upload date:
2020 07 24
MD5:
35b074e2792605ddc5dba8791cb9d589
Downloads:
547

Information

SPECIFICATIONS ... iv 1. GENERAL DESCRIPTION ... 1 2. OPERATION ... 2 3. CIRCUIT DESCRIPTION ... 12 4. SERVICING ... 18 5. REPLACEABLE PARTS ... 24 SCHEMATIC . ... 31

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