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rvklein
Joined: 17 Jan 2011 Posts: 20
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Link Posted: Thu Mar 31, 2011 3:27 pm Post subject: Does anyone elses AMP meter show 2-3 amps with just power on |
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I don't have my PIDs, timers, temp controllers wired up yet but most switches are. After replacing a transformer/voltmeter/DC PS my voltage shows aok. However my AMP meter shows I'm pulling 2-3 AMPs with just lights on Even if it's just the power light.
A cause for concern?
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rosenjm
Joined: 21 Dec 2010 Posts: 249 Location: Ballston Spa, NY
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Link Posted: Thu Mar 31, 2011 7:52 pm Post subject: |
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I don't think is cause for concern. Your power light isn't pulling 2 amps. Make sure your DC power supply output is correct and that your amp meter is correctly wired to the shunt. Mine shows about 0.2 amps with nothing running (pumps or elements).
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kal Forum Administrator
Joined: 12 Dec 2010 Posts: 11123 Location: Ottawa, Canada
Drinking: Pub Ale, Electric Creamsicle, Mild, Pliny the Younger, Belgian Dark Strong, Weizen, Russian Imperial Stout, Black Butte Porter
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Link Posted: Thu Mar 31, 2011 9:18 pm Post subject: |
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It may be also that the shunt is not properly matched for the amp meter, or a jumper in the amp meter is set wrong (ie: the seller did something wrong). On the back of the amp meter it should be written what ohm rating shunt should be used and if you measure the shunt with an ohmeter it should match.
Kal
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rvklein
Joined: 17 Jan 2011 Posts: 20
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Link Posted: Fri Apr 01, 2011 1:40 pm Post subject: |
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You know... My first amp meter was DOA, I probably did not change the shunt out when I replaced it....
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