Detector for correcting measuring accuracy of sonic nozzle of diaphragm gas meter
A membrane gas meter and measurement accuracy technology, which is applied in the direction of instruments, measuring devices, testing/calibrating devices, etc., can solve the problems of low one-time pass rate of products, increased repeated testing process, and low work efficiency, so as to avoid signal Instability, improvement of one-time pass rate, and improvement of work efficiency
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[0015] The present invention will be further described below in conjunction with the accompanying drawings.
[0016] see figure 1 and figure 2 A detector for calibrating the metering accuracy of the sonic nozzle of a membrane gas meter as shown is composed of a photoelectric collector and a photoelectric encoder, and its characteristics are:
[0017] The photoelectric collector comprises a base 2, a photoelectric sensor 1 arranged in a groove of the base and a permanent magnet 3 arranged in one side of the base;
[0018] The photoelectric encoder includes a photoelectric encoder disk 4 that is matingly connected to the end of a rotating shaft and an annular magnetic steel 5 located in the middle of the rotating shaft. The edge of the photoelectric encoder disk 4 is provided with four radial strip gaps with equal distances. .
[0019] Further, the photoelectric sensor 1 is an infrared photoelectric emitting tube and an infrared photoelectric receiving tube.
[0020] see ...
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