Flow Rate Sensor Troubleshooting and FAQs

Primary Test: Plug in the sensor and start up the data-collection program. Spin the impeller on the sensor and check the readings, which should be changing as the impeller spins.
Secondary Test: Submerge the impeller of the sensor in a stream to about 40% of the depth. Point the impeller upstream and directly in the flow. Collect data. When the sampling ends, a reading of flow rate should be displayed.

Range: 0 to 4.0 m/s (0 to 13 ft/s)
Accuracy: ±1% of full-scale reading
Typical Resolution: 0.0012 m/s
Response time:
⚬ 98% of full-scale reading in 5 seconds
⚬ 100% of full-scale in 15 seconds
Temperature range (can be placed in): 0 to 70°C
Stored Calibration: Slope = 1 m/s/V; Intercept = 0 m/s

Calibrate? No. The sensor uses a stored calibration that is written into the sensor. No calibration instructions are provided for this sensor.