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1. Photoreflective tachometers
1.1 Measuring principle
In a photoreflective tachometer, the sensor consists of a photoelectric transmitter and receiver. To take a measurement, simply place a reflective target on the object whose rotation speed is to be measured, and then aim the tachometer's beam at this object. The photoelectric sensor then generates a pulse each time the reflective target passes in front of the light beam (figure 1 ).
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Photoreflective tachometers
Bibliography
Standards
Association française de normalisation AFNOR
- Guide pour l'expression de l'incertitude de mesure. - NF ENV 13005 - 08-99
- Geometric product specifications – Verification by measurement of parts and measuring equipment – Part 2: Guide to the estimation of uncertainty of measurement in the calibration of measuring equipment and...
Manufacturers and suppliers
Non-exhaustive list
AOIP http://www.aoip.fr
Blet http://www.blet-mesure.fr
Braun GmbH http://www.braun-tacho.de
Chauvin-Arnoux...
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