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View Full Version : Volts & amps in one



threedogs
24th February 2016, 04:15 PM
Heres a little ripper , not sure how many are fans of amp meters,?
Might be interesting to see what devices pull what amps when working.
Price is cheap compared to others out there

http://www.ebay.com.au/itm/VOLT-AMP-METER-VOLTMETER-AMMETER-FLUSH-MOUNT-12V-VOLT-10A-AMP-BATTERY-LV1763-/301874733429?hash=item464922e175:g:XFcAAOSwB4NWxOt 1

Think Ill change my Aux battery volt gauge to one

mudnut
24th February 2016, 04:45 PM
Dunno about accuracy, but good as quick reference.

MudRunnerTD
25th February 2016, 12:52 PM
Not sure why? this will only measure upto a 10amp load? so no good for measuring Alternator charge. if you have more than a couple of things coming off your aux battery and the draw gets to 10amps this will stop working? anything your running a 30amp relay off will not function with this either?

I would actually be interesting to wire it into the Fridge plug directly assuming it will read the Fridge Draw? not sure how you would stop it reading all draw off a circuit though? maybe it would need to be a switched circuit from Battery to Fridge only? it must then differentiate between input and draw while driving? I think it has a limited application.

Id be interested in measuring and monitoring Alternator Output in Amps?? and or Winch Draw in Amps?? Very interested in that.

mudnut
25th February 2016, 12:57 PM
Very easy to set up a high current shunt and use connect an ammeter across it, for the winch.

Example only http://www.ebay.com.au/itm/Amp-Ammeter-DC-300A-75mV-Current-Measure-Shunt-Resistor-New-/281829750597?hash=item419e5cb745:g:kd0AAOSw5ZBWIIo 7

In layman's terms: The ammeter is only a very sensitive voltmeter, that measures the voltage drop created by the current running through the shunt.

mudnut
25th February 2016, 01:16 PM
Or a matched set, for reference purposes only while setting up the circuit as it ain't water and muck proof.

http://www.ebay.com.au/itm/Analog-Amp-Panel-Meter-Current-Ammeter-DC-0-500A-500A-Shunt-/110899750241?hash=item19d223e561:m:mFDFhffH0BQPBid IXhgWDLA