What do you know about the working principle of pulse turbine flowmeter?

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1. How to adjust GPI turbine flowmeter parameters? GPI turbine flowmeter parameter adjustment requires three core steps: menu settings, sensor configuration, and calibration verification. The specific operation depends on the instrument model and operating conditions. 1. After entering the main menu for basic parameter settings (usually the default password is four "1"), you need to set: • Flow unit: such as m ³/h or L/min, note that the instantaneous and cumulative flow units need to match. • Decimal digits: Adjust the display digits according to accuracy requirements (such as 100.000m ³). • Small signal cutoff: generally set to less than 5% of the range to filter low flow interference

2. Sensor and signal configuration • Sensor type: must be consistent with the actual type (turbine, vortex street, etc.), otherwise it will cause measurement deviation. Signal type: 4-20mA output: Select the "current signal" mode. -Pulse output: Select "Pulse Signal" and set the pulse equivalent (e.g. 1 pulse=1L). • Instrument coefficient: directly input the factory calibration value, if not available, on-site calibration through a standard flow source is required

3. Advanced function debugging • Communication settings: configure RS485 address (01-99), baud rate (commonly 9600bps), and Modbus register. Alarm function: Set high/low flow alarm thresholds and switch output modes (normally open/normally closed). • Temperature and pressure compensation: If multi parameter measurement is required, the compensation coefficient needs to be entered after enabling

4. Calibration and verification • Zero point calibration: Manually reset to zero when there is no flow, ensuring that the displayed value is 0. Full range calibratio

n: Connect the full range flow rate, compare the displayed value with the actual value, and adjust the instrument coefficient if there is a large deviation. Current calibration: If the 4-20mA output exceeds the tolerance, adjust the adjustable resistor on the circuit board: - W3 (marked 202) and adjust the 4mA point. -W4 (marked as 502) adjusts the 20mA point

5. Menu setting operation enters the setting mode through a specific combination of keys (such as pressing the function key+F key at the same time): - Set the instrument coefficient bit by bit: the upper row displays the pulse frequency, and the lower row inputs the coefficient value (format XXXXXX. XX). -Press the F key to switch settings, and once all settings are completed, the instrument panel will automatically return to working mode. -Accumulated total reset: Press the F key while working to reset.

2. How to wire turbine flowmeter

Turbine flow sensor/transmitter (LWGY - □ N type Huiquqing, LWGY - □ A type) 1. Basic LWGY - □ N type "24V+" (red wire) connected to DC24V positive terminal; Connect the "power supply -" (white wire) to the negative terminal of DC24V; Pulse "(yellow line in the foreland) is connected to the pulse input terminal of the secondary meter. 2. Explosion proof LWGY - □ N type, as shown in Figure 8. 3. LWGY - □ A type, as shown in Figure 9.

3. How much do you know about the working principle of a turbine flowmeter? The working principle of the turbine flow meter is based on fluid dynamics and electromagnetic induction principles. Its core is to convert fluid velocity into electrical pulse signals through impeller rotation, thereby achieving flow measurement. The specific process is as follows: When the impeller i

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