High precision, generally up to ±1%R, ±0.5%R, high precision type up to ±0.2%R;
Good repeatability, short-term repeatability can reach 0.05%~0.2%. It is precisely because of its good repeatability that high accuracy can be obtained through frequent calibration or online calibration. It is the preferred flow meter in trade settlement.
Output pulse frequency signal, suitable for total quantity measurement and computer connection, no zero drift, strong anti-interference ability;
Can obtain very high frequency signals (3~4kHz) with strong signal resolution;
Wide range, medium and large diameter can reach 1:20, small diameter is 1:10, compact and light structure, easy installation and maintenance, large flow capacity; Suitable for high-pressure measurement, no need to open holes on the meter body, easy to make high-pressure instrument;
There are many types of special sensors, which can be designed into various special sensors according to the special needs of users, such as low-temperature type, bidirectional type, downhole type, sand mixing type, etc.
It can be made into an insertion type, which is suitable for large-caliber measurement, has small pressure loss, low price, can be taken out without interruption, and is easy to install and maintain.
When the measured fluid flows through the sensor, the impeller is forced to rotate under the action of the fluid, and its speed is proportional to the average flow rate of the pipeline. The rotation of the impeller periodically changes the magnetic resistance value of the magnetoelectric converter. The magnetic flux in the detection coil changes periodically, generating a periodic induced potential, that is, an electrical pulse signal, which is amplified by the amplifier and sent to the display instrument for display.
The flow equation of the turbine flowmeter can be divided into two types: practical flow equation and theoretical flow equation
