Ultrasonic flow sensor - Hachflow
Ultrasonic flow sensor - Hachflow
Ultrasonic flow sensor - Hachflow
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Figure 6 Rectangular weir (without end contractions) dimensionsdefinitionsFigure 7 Cipolletti weir dimension definitions1 Sensor 5 Cipolletti type2 Range 6 Taper 4:1 ratio1 Sensor 4 Channel width B2 Maximum depth 5 Crest width B3 Crest height P 6 10-inch deadband3 Depth 7 10-inch deadband4 Maximum depthCalibrate the <strong>sensor</strong>About <strong>sensor</strong> calibrationThe <strong>sensor</strong> characteristics slowly shift over time and cause the <strong>sensor</strong> tolose accuracy. The <strong>sensor</strong> must be calibrated regularly to maintainaccuracy.During calibration, data is not sent to the datalog. Thus, the datalog canhave areas where the data is intermittent.<strong>Ultrasonic</strong> calibration procedureNote: If the controller is powered up while the ultrasonic <strong>sensor</strong> is not plugged in,the calibration history for ultrasonic <strong>flow</strong> is deleted.12 English