The instrument should be calibrated indoor before installation to ensure the normal performance.
General consideration
1. The open channel flowmeter should be checked indoors before installation to ensure the normal performance of the meter.
2. Align the ultrasonic probe of the open channel flowmeter with a wall as vertically as possible to ensure it is measured.
3. According to the label below the terminal, connect the probe to the host, and according to the power supply label, power the meter correctly.
4. The open channel flowmeter first displays the startup screen, and then displays the main measurement page. The symbol on the upper right corner of the display
flashes and the reading is stable, indicating that the communication between the host and the probe is normal.
5. Touch the navigation bar of the meter, the meter can switch to other measurement information pages (distance, temperature, current, liquid level), and you can also
view real-time data trends and historical data records.
6. Slowly move the probe, the liquid level value and distance value displayed by the meter should change accordingly. When moving within a short distance (1m), the speed should not exceed 0.1m/s. There is a detection window inside the instrument, and the target instrument beyond the detection window needs a judgment time of about 5s. The window of the level gauge below 10m is usually ±0.5m, and the window of the level gauge above 10m is ±1.2m. Due to the existence of the detection window, the meter will sometimes make mistakes when the distance is about 1/2 times the distance from the far to the near. The sudden change of distance usually does not exist in the actual measurement process.
7. In the basic settings, modify the weir/ flume model and installation height, save and exit, the flow value displayed by the meter will change, and observe that the cumulative flow of the meter is increasing.
8. Use a multimeter to measure the DC4-20mA current output, the current output always corresponds to the instantaneous flow value.
9. Modify the working status of the relay and the set value of the action point, and use a multimeter to check whether the relay is correctly delayed action.
10. Connect with the host computer to test the RS485 communication function of the instrument .
Post time: Oct-24-2022