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Generators / Frequency/Voltage Meter for ST gensets
« on: April 14, 2016, 04:12:39 PM »
I've been disappointed with the analog panel meters for AC frequency and voltage from China. The frequency meters in particular are junk- when voltage goes down (with increased load and thus lower frequency), the frequency meters show an increase in frequency! Laughably bad design.
Many digital frequency meters have problems with the ragged waveform of the ST generator heads. They will not display the proper value, or even close.
I did find one cheap ($10) digital meter that is quite good:
http://www.ebay.com/itm/131683950915?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Both frequency and voltage are displayed properly and accurately on an ST-3 head on harmonic. Voltage is RMS, tracks a Siemens ($) display within a volt.
Many digital frequency meters have problems with the ragged waveform of the ST generator heads. They will not display the proper value, or even close.
I did find one cheap ($10) digital meter that is quite good:
http://www.ebay.com/itm/131683950915?_trksid=p2060353.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Both frequency and voltage are displayed properly and accurately on an ST-3 head on harmonic. Voltage is RMS, tracks a Siemens ($) display within a volt.