Cangzhou turbine flowmeter | Working principle of turbine flowmeter

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1. Adjustment coefficient of turbine flowmeter

The instrument coefficient adjustment of turbine flowmeter is the core link to ensure its measurement accuracy, usually requiring the use of standard equipment calibration and parameter modification through hardware or software. 1. Coefficient meaning: The instrument coefficient of a turbine flowmeter represents the number of pulses generated per unit volume of fluid passing through it, usually measured in times per liter or times per cubic meter. This value is closely related to the mechanical structure, fluid properties, and pipeline installation conditions of the flowmeter, and is the basic calibration parameter for flow calculation.

2. Adjustment method: Hardware adjustment: Some conventional models are achieved through physical adjustment, such as using a tool to rotate and turn an internal potentiometer to change the resistance value, and adjust the pulse output frequency accordingly.

. This type of operation requires professional personnel to avoid accidental contact with precision components. Software adjustment: Contemporary intelligent flow meters mostly support digital settings, which can be accessed through the surface cleaning hand board button or connected to a computer programmer to enter the parameter menu and directly input the calibrated new coefficient value and save it.

3. Operation steps: First, prepare the standard flow detection equipment (such as the volumetric method calibration device) and parallel the flow meter to be calibrated; Subsequently, multiple testing points were selected within the 20% -100% flow range, and the measured flow values of the standard equipment and the number of turbine flow meter pulses were sync

hronously recorded; According to the formula K=N/V, calculate the coefficients for each point. If the data dispersion is small, take the arithmetic mean. If the difference is significant, set the coefficients in sections; Finally, write the final coefficient value into the flowmeter system. 4. Precautions: During the calibration process, ensure that the fluid properties (density, viscosity, etc.) are consistent with the actual operating conditions to avoid errors caused by medium differences. Before operation, it is necessary to consult the instruction manual of the corresponding model, strictly follow the standardized procedures, and prevent improper operation from causing equipment failure or data distortion.

2. Working principle of turbine flowmeter

The working principle of turbine flowmeter is based on fluid dynamics and electromagnetic induction principles. Flow measurement is achieved by measuring the impeller speed. The specific process is as follows

1. Fluid drives the impeller to rotate. After entering the sensor housing of the turbine flowmeter, the fluid impacts the impeller blades.

. Due to the fixed angle between the blades and the flow direction of the fluid, the impulse of the fluid generates a rotational torque on the blades. The impeller begins to rotate after overcoming the frictional torque and fluid resistance, and when the torque reaches equilibrium, the impeller speed tends to stabilize. Key relationship: Under specific conditions (such as stable fluid viscosity and density), the impeller speed is directly proportional to the fluid flow velocity. Figure: Internal structure of turbine flowmeter, with the impeller located in the center of the fluid channel and the signal detect

Cangzhou turbine flowmeter | Working principle of turbine flowmeter

1. Adjustment coefficient of turbine flowmeter

2. Working principle of turbine flowmeter

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