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Digital multimeters tests
Philips PM 2525 - ac measurement
Philips PM 2525 Philips PM 2525

Philips PM255 is 5½-digits (199999) laboratory multimeter with main adapter power supply. It has been purchased in 1990 and never calibrated.

Philips PM 2525 - tests result Fig. 1 - test results

Results of true RMS values in miliVolts and Volts respectively (above 1V) of sinus signal from APN-62 Rohde Schwarz generator at various frequences.

Values at frequence 10 Hz were not stabile at any ranges.

Date of tests: 18.July 2009

Philips PM 2525 - measured errors Fig. 2 - measured errors

The graph shows errors of measured values dependings frequence. The tested instrument is usable for signals above 10 mV up to frequences 50 kHz. The signals above 20 mV up to 100 kHz and more (depends requested error). The tested instrument has problems with signals under 20 Hz.