Res Analog Power Meter, Units per rev of "wheel"
Res Analog Power Meter, Units per rev of "wheel"
(OP)
I have a residential analog electric power meter, the one with a horizontal wheel that rotates several times per KWH. This drives a series of 5 clock-type meters representing the numbers 0-9.
My question is how much power does one revolution of the horizontal wheel indicate.
I did a quick measurement this morning, recording with a stop watch, an average time of 6 seconds per revolution. I would estimate that the house was running at about a 4 KW load level. This suggests, given that the wheel would rotate 600 times in an hour, that one revolution of the wheel represents 4/600 = 0.0067 KWH. A strange number, I expected the value to be some order of 10, i.e., 0.1 or 0.01, so on. Seems that's not the case.
Anyone know the value of one revolution?
My question is how much power does one revolution of the horizontal wheel indicate.
I did a quick measurement this morning, recording with a stop watch, an average time of 6 seconds per revolution. I would estimate that the house was running at about a 4 KW load level. This suggests, given that the wheel would rotate 600 times in an hour, that one revolution of the wheel represents 4/600 = 0.0067 KWH. A strange number, I expected the value to be some order of 10, i.e., 0.1 or 0.01, so on. Seems that's not the case.
Anyone know the value of one revolution?






RE: Res Analog Power Meter, Units per rev of "wheel"
Bill
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"Why not the best?"
Jimmy Carter
RE: Res Analog Power Meter, Units per rev of "wheel"
Thanks, I'll take a look at the meter next time I'm out, but can say from the measurement this moring 7.2 WH per rev works well, that gives 600 x 7.2 = 4,320 I know the load was a bit greater than 3.3 KW, the Heat Pump was running and using that much, another 1 KW between refrigerator, lights, whatever is clearly in the ball park.
Thanks,
Jerry