Equipment information:

Keithley 502 Analog multimeter
Model: 502
Date: 1964
Category: Measurement instruments
Group: Analog multimeter
Description: Milliohmmeter
                                    The Keithley Model 502 is a battery operated, portable milliohmmeter
for measuring resistances from 0.00003 to 1000 ohms. The instrument
employs an AC testing method, eliminating zero drift and permitting
resistance readings in the presence of DC currents.
The reading is presented an a linear scale panel meter.
Typical applications of the instrument include measurement of contact
resistance, conductivity of semi-conductor samples, fuse and
squib testing, and electrolyte conductivity.
Maximum power dissipation in the sample is 2 microwatts, permitting
the measurement of detonator fuses without danger of detonation.
In the measurement of contact resistance, the model 502 may be
considered a "dry circuit" tester. However, the instrument may be
used in the presence of DC biasing currents to measure the change
in resistance caused by these currents.

These manuals are available for the above equipment:

Keithley -- 502 -- Service and User Manual
File name: Keithley-3954-Manual-Page-1-Picture
Manual Type: Service and User Manual
Pages: 23
Size: 938.14 Kbytes (960658 Bytes)
Date: July 1977
Quality: Scanned document, all readable.
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MD5: 1000e2d55d0b2e9d62b22a3a67b779d5
ed2kID: 1dc4d79999bc866799d746ad119a5ebb
Downloads: 128 since 13 January 2013
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