461960 Datasheet, PDF (5/10 Pages) Extech Instruments Corporation. – RPM Controller / Monitor

Operation
RPM measurement
1. Apply power to the meter.
2. Press the “Function Button" once until the "RPM” and the "PV" indicators
are on.
3. The display will indicate the RPM value.
4. The RPM value equals :
Total input signal (pulse) per min.
Number of pulses per revolution
Example:
If the total signal (pulse) input per minute is 5,124, the number of pulses per revolution
is set to 1, the RPM value will be;
5,124/1 = 5,124
Surface speed ( m/min., ft/min. ) measurement
1. Apply power to the meter
2. Press the "Function” button once until the "m/min” indicator is on. The display will
show the m/min. value.
3. Press the "Function” button once until the "ft/min” indicator is on. The display will
show the ft/min. value.
4. Under the surface speed measurement, the "PV” indicator will also light.
5. To calculate m/min:
Total input signal ( pulse ) per min. x roller diameter ( cm ) x 3.14 ÷ 100
Number of pulses per revolution
Example: If the total input signal (pulse) per minute is 501, the number of pulses per
revolution is set to 1, the roller diameter is 10 cm the m/min. value will be;
501/1 x 10 x 3.14/100 = 157.3
6. To calculate ft/min:
Total input signal ( pulse ) per min. x roller diameter ( cm ) x 3.14 ÷ 30.48
Number of pulses per revolution
Example: If the total input signal (pulse) per minute is 501, the number of pulses per
revolution is set to 1, the roller diameter is 10 cm the ft/min. value will be;
501/1 x 10 x 3.14/30.48 = 516.1
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461960 V1.1 8/07