Nine wave flowmeter manual| Baoding ultrasonic flowmeter manufacturer

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1. What is the square size of the signal line of the nine wave flowmeter?

Continuous power supply (external power supply). The 4-20mA signal of the ultrasonic flowmeter is instantaneous. If you have to set the output response, please choose 1ms. Battery power supply is noisy for 30s.

2. What should I do if there is no signal for the calibration and echo of the Beijing nine wave open channel flowmeter?

1. Firstly, the connecting cable (excitation circuit, signal circuit) system source rock failure. Check whether the cables connecting the excitation system and signal system are connected and correctly connected.

2、 Secondly, power supply failures such as not being connected. Firstly, confirm that the power supply has been connected, and then check all parts of the power supply. Check the main power supply and excitation current fuse during the hail season. If the current meets the specified value and the new fuse is reconnected but melts, the fault location must be identified. Check if the output voltages of the power circuit board are normal, or replace the entire power circuit board.

3. Open channel radar flowmeter

4. Nine wave flowmeter has records but does not display data

Nine wave flowmeter has records but does not display data, usually due to sensor signal processing or display unit failure. It is necessary to check the signal transmission link and display module power supply. 1. Problem diagnosis steps: ① Signal transmission inspection • Check whether the wiring between the sensor and the display instrument is loose or corrod

ed, with a focus on whether the shielding wire grounding is reliable • Use a multimeter to measure the voltage/current value of the signal output terminal: 4-20mA output corresponds to 4mA (0 flow) and 20mA (full range) standards, and pulse output needs to be detected with a frequency meter • If the signal is normal but not displayed, the fault point is in the display unit ② Display unit detection • Confirm the power supply voltage of the display screen (usually 24VDC ± 10%), and if it is lower than 21V, it may trigger undervoltage protection • Check whether the mainboard fuse (usually 0.5A-1A) is blown • Try to restore the factory settings: simultaneously press and hold the "SET"+">" keys for 10 seconds (specific combination needs to refer to the model manual). 2. The sentence is: Common causes of malfunctions • Sensor probe scaling leading to signal attenuation (commonly seen in sewage measurement) • Main board AD conversion module damaged base combustion dust (requiring factory repair) • Display backlight malfunction (weak data visible under strong light oblique view) • Parameter setting error (such as range set to 0) 3 Emergency response plan • Activate the backup recorder interface (RS485/MODBUS) to export data • Short circuit signal input terminal analog signal test (4mA corresponds to 0%, 12mA corresponds to 50%) • Replace the backup display head (pay attention to protocol matching). In high-voltage or explosion-proof situations, section cleaning must be operated by certified personnel, and non professionals are strictly prohibited from disassembling explosion-proof shells. Bo Chan

Nine wave flowmeter manual

1. What is the square size of the signal line of the nine wave flowmeter?

2. What should I do if there is no signal for the calibration and echo of the Beijing nine wave open channel flowmeter?

3. Open channel radar flowmeter

4. Nine wave flowmeter has records but does not display data

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