Fashion Blogs

Turbine flow meters are widely used in petrochemicals, organic liquids, inorganic liquids, liquefied gases, natural gas, and low to medium temperature fluids. Now it is widely used together with the orifice plate flow meter.

Turbine Flow Meter Advantages

(1) High precision

For liquids, it is generally ± 0.25% ~ ± 0.5%, for gas turbine flow meter, it is generally ± 1.5%, and the special special type is ± 0.5% ~ 1%. Turbine flow meters are relatively high precision flow meters compared to other types of flow meters.

(2) Good repeatability

Short term repeatability is up to 0.05% to 0.2%. It can be used for custody transfer if users frequently calibrate flow meters.

(3) Wide measuring range

For the large size turbine sensor, the rejection ratio can be 40: 1 ~ 10: 1, and for the small size sensor tube, it can be 6: 1 or 5: 1.

(4) Output pulse frequency signal

Suitable for total measurement and connection to the computer, no zero drift, strong anti-interference ability. A very high frequency signal (3 ~ 4Hz) is obtained from the turbine sensor, and the resolution of the signal is strong.

(5) Suitable for high pressure measurement

The meter body is easy to make a high pressure meter.

(6) There are many types of structures that can be adapted to the needs of various measurement purposes, such as thread or flange type, or even triple clamp type for hygienic purposes.

Disadvantages of turbine flow meters

(1) It is difficult to maintain the calibration characteristics for a long time, and it is necessary to recalibrate periodically. For non-lubricating liquids, when the liquid contains suspended solids or is corrosive, it is easy to cause problems such as bearing wear and stuck rotor. In special working conditions, wear resistant hard alloy shafts and bearings are required. When it is for custody transfer and high precision is needed, it is best to have calibration equipment on site that can be calibrated regularly to maintain its accuracy.

(2) Not applicable to flow measurement of higher viscosity fluids. As the viscosity increases, the lower measurement limit of the flow meter increases, the measurement range decreases, and the linearity is poor.

(3) The properties of the fluid (density, viscosity) have a great influence on the performance of the flow meter. Gas turbine flow meters are easily affected by gas density, while liquid turbine flow meters are sensitive to viscosity changes in liquids. Since density and viscosity are closely related to temperature and pressure, in the case of large temperature and pressure fluctuations in the field, compensatory measures must be taken to maintain high precision.

(4) The flow meter is greatly affected by the distortion of the flow velocity distribution and the eddy flow. Long sections of straight pipe are required to install upstream and downstream of the turbine flow sensor.

(5) The turbine flow meter can only measure clean fluids, and filters are usually needed when installing the sensor.

(6) The physical characteristics of the small flow meter (2 "or less) are seriously affected, and the flow meter performance is difficult to improve for a small size sensor.