Pricing and Purchasing
RPM sensor, hall effect, includes magnets
Hall effect RPM sensor. Includes two small ceramic discs magnets. Registers pulse counts off of a magnet to measure rotational speed for wind turbine testing. Short pigtail leads attached. Can be configured with longer leads for additional cost.
Technical data sheet from the manufacturer of the sensor.
Usage with Wind Data Logger:
The RPM sensor can be connected to one of the anemometer channels as you would with a normal anemometer.
Your calibration values values for calculating RPM and total daily revolutions would be as follows (n = number of magnets used).
RPM: Anemometer m (multiplier) = 60 / n Anemometer b (offset) = 0 Total Daily Revolutions: Counter m (multiplier) = 1 / n Counter b (offset) = 0
So for an example, if you used Anemometer Channel 2 and two magnets, you could do the following:
Main Setup Menu > Anemometer Setup > Anemometer 2 AN_M2 = +0030.0000 AN_B2 = +0000.0000 Label2 = TURBINE RPM AN2_UNIT = RPM Main Setup Menu > Counter Setup > Counter 2 CNT_M2 = +0000.5000 CNT_B2 = +0000.0000 Label2 = TOTAL REVS CNT2_UNIT = CNT