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EspañaIt has a low pressure loss
A turbine flowmeter measures volumetric flow by a process. The fluid flows in the pipe and engages the rotor which rotates at an angular velocity proportional to the flow rate. This angular velocity induces a forward force which is converted into an electrical signal. The frequency and sum of this signal indicate the volumetric flow. The rotor and the vaned rotor are the only moving parts of the flow meter.
The turbine flowmeter assembly consists of a turbine with electronic pickup, preamp, isolating flow conditioner, profile device, and antiswirl device. It also includes a spacer plate with paddle handle and a large weld neck.
It is accurate at high flow rates
The accuracy of a turbine flowmeter is very high even at high flow rates. This type of flowmeter has a K-factor, which represents the linearity of the device over a range of flows. The K-factor varies between models, and the specific model is calibrated for the fluid it will be measuring.
This type of flowmeter has a rotating chamber that dispenses fluid. The rotating chamber repeatedly fills and empties the measuring chamber, allowing the total volume of the fluid to be determined. The rate at which the measuring chamber is filled and discharged is proportional to the rotation speed. However, if the measuring chamber leaks, it can influence the accuracy of the measurement and introduce uncertainty.
It can be damaged by solids
Turbine flowmeters need clean fluid to operate properly, and solids entrained in the fluid can cause damage. It is important to have a strainer or cartridge filter installed upstream of the flowmeter in order to prevent damage from solids. The filtration device must be at least 20 diameters in diameter. Solids are not an immediate threat to a turbine meter, but they can significantly reduce its accuracy.
Solids may damage the turbine's rotor, making it unable to accurately measure flow. Solids and other materials may foul the rotor and cause the meter to show high readings. Turbine flowmeters need to be calibrated at special facilities in order to ensure accuracy. Overspeeding and hydraulic shock can also damage the meter.
It should be calibrated with the fluid to be metered
When calibrating a turbine flowmeter, you should use the fluid to be measured and a standardized calibration standard. This ensures that the measurements produced by the turbine flowmeter are accurate. The standard should be traceable to a recognized standard, which provides an unbroken chain of documentation. In addition, the calibration rate should be at a steady state. During calibration, the test instrument compares the measured values to the standard.
Calibration is necessary because turbine flow meters can drift. The accuracy of a turbine flowmeter depends on the measurement range, the fluid being measured, and the instrument's temperature. The instrument's accuracy will change over time if the fluid changes in temperature, specific weight, or other variables. This is why it is important to calibrate turbine meters regularly with the fluid to be measured.an also damage the meter.
It should be calibrated with the fluid to be metered
When calibrating a turbine flowmeter, you should use the fluid to be measured and a standardized calibration standard. This ensures that the measurements produced by the turbine flowmeter are accurate. The standard should be traceable to a recognized standard, which provides an unbroken chain of documentation. In addition, the calibration rate should be at a steady state. During calibration, the test instrument compares the measured values to the standard.
Calibration is necessary because turbine flow meters can drift. The accuracy of a turbine flowmeter depends on the measurement range, the fluid being measured, and the instrument's temperature. The instrument's accuracy will change over time if the fluid changes in temperature, specific weight, or other variables. This is why it is important to calibrate turbine meters regularly with the fluid to be measured.
