Turbine flow meters measure flow through turbine rotation and need to adjust the display unit, calibration zero point, full scale value, sensitivity and error offset.
1. Introduction to turbine flowmeter
Turbine flowmeter is a commonly used flow measurement instrument, mainly used to measure the flow rate of liquid or gas in pipelines. Its working principle is to convert flow into rotational speed based on the rotational torque generated when the fluid passes through the turbine, thereby achieving flow measurement.
2. Data display adjustment method
1. Select the appropriate display unit
The output signal of the turbine flowmeter is generally a frequency signal or an analog current signal, which requires Convert it to a standard physical quantity unit representation. When adjusting the data display, select the appropriate standard unit according to the actual flow range of the liquid or gas, such as liters/minute, cubic meters/hour, etc.
2. Calibrate the zero point
Before using the turbine flowmeter, its zero point needs to be calibrated. The calibration method is to put the fluid in a static state, adjust the data to display zero value, and confirm.
3. Calibrate the full value
After the zero point is calibrated, the full value needs to be calibrated. Adjustments can be made by adding large amounts of fluid to the pipe, or by using standard calibration devices. Generally speaking, the setting range of the turbine flowmeter is 20%-100% of the full value, which needs to be reasonably adjusted according to the actual usage.
4. Adjust the flow meter sensitivity
When making actual measurements, the sensitivity of the turbine flow meter needs to be adjusted according to the actual flow conditions to ensure the accuracy of the measurement results. The sensitivity of the turbine flowmeter can be changed by adjusting parameters such as rotor diameter, position, and flow path.
5. Calibration error offset
In actual use, the measurement results of the turbine flowmeter may have a certain error offset and need to be calibrated. The purpose of calibration can be achieved by comparing the actual measured value of the turbine flowmeter with the standard value and making adjustments.
3. Summary
For the data display adjustment of the turbine flowmeter, many aspects of calibration and adjustment are required to achieve accurate flow measurement. During use, it is necessary to pay attention to maintenance and regular calibration to ensure its normal use and accurate measurement.
Hangzhou Economic Development Area，Hangzhou 310018，China
