Equipment information

Hewlett Packard 425A Analog multimeter
Hewlett Packard
Model: 425A
Date: 1958
Category: Measurement instruments
Group: Analog multimeter
Description: DC-Microvolt-Anmeter

The Model 425A DC Microvolt-Ammeter is an extremely sensitive measuring device which measures voltages from 1 microvolt to 1 volt and currents from 1 picoampere to 3 milliamperes. An input resistance of 1 megohm on all voltage ranges minimizes errors due to circuit loading. The Model 425A can make measurements in circuits which are off ground potential, for the chassis and input circuit may be isolated from the cabinet. The Model 425A provides an output which will drive either potentiometer or galvanometer recorders. It will deliver up to 1milliampere at 1 volt .

These manuals are available for the above equipment:

Manual Type: Service and User Manual HewlettPackard-3731-Manual-Page-1-Picture
Pages: 51
Size: 5.21 Mbytes (5458354 Bytes)
Language: english
Revision: Revised
Manual-ID/Number: 00130-4
Quality: Scanned document, all readable.
Upload date:
MD5: 8fb8f4a21a5535c3812c7778282e322d
Downloads: 722 since 21 July 2012

Serials prefixed: 142- Includes Supplement A


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