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analog watt meter

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Oracle:
hi,

where can i buy an analog lab watt meter? and what's the average price?

specification:
single phase, max 10 A 400V class: 1,5, 1 or 0.5

The Electrician:
What accuracy do you require?  Do you want an electronic meter, or will an electromechanical one do?

Oracle:
electromechanical possibly.

The Electrician:
A meter such as this:

http://www.ebay.com/itm/Meter-wattmeter-Simpson-model-79-750-watts-10-amps-Max-150-volts-Max-NEW-/150884113846?pt=LH_DefaultDomain_0&hash=item232164ddb6

can provide an accuracy of several percent.

These Yokogawa meters are specified as 1/2 percent:

http://www.ebay.com/itm/YEW-Portable-Single-Phase-Wattmeter-Type-2041-10390M-Yokogawa-Tests-OK-/261115411482?pt=LH_DefaultDomain_0&hash=item3ccbb0fc1a

http://www.ebay.com/itm/YEW-Yokogawa-Portable-Single-Phase-Wattmeter-2041-/150633707952?pt=LH_DefaultDomain_0&hash=item231277f9b0

These meters typically don't have a 400 volt rating for the voltage coil, but you can add an additional multiplier resistance to increase the input voltage rating.

Oracle:
ok. thanks. Price is interesting.... Guess something new would be over 250 $.

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