The manufacturers must be using the same formula and acounting for some error, so it looks like my problem is solved. Thanks for everyones help on the matter.
The nameplate says 110 - 127v with an amperage rating of 5.0 amps. However when I ran the unit and took measurements of voltage and current we got 117.1 volts and a current reading of 2.9 amps at maximum speed and no samples inside.
Thanks for all the info. I am actually talking about tabletop centrifuges. One of the manufacturer's has gotten back to me about the BTU output and says it is about 1200 BTUs for their unit.
I agree the motion all gets turned back to heat, however some of the heat will heat the product in the centrifuge, some will be dispated by the rotor, some will be absorbed by the material so not all the heat will escape out of the centrifuge.
Does anyone know how I can measure or caculate the BTU output of a few centrifuges that we have in our labs. Apparently, if the output is above 10% of the other equipment I will ahve to do a room mapping.
