Vortex Street flowmeter

『Vortex Street flowmeter』Related information(flow rotameter|digital flow meter|balo meter|hydraulic flow meter|volumetric meter|positive displacement meter|pitot tube flow meter|displacement meter|cfm meter|variable area flow meter|inline flow meter|differential pressure flow meter|calibrated flow meter|velocity meter|paddle wheel flow meter|oval gear flow meter|anemometer hvac|multiphase flow meter|doppler flow meter|thorpe tube flowmeter|heat flow meter)

1. What kind of flowmeter requires a flow integrator, what kind of flowmeter needs a differential pressure transmitter, and what kind ..

Simply put:

1. What kind of flowmeter requires a flow integrator? Answer: Non intelligent flow meters. The most basic feature is that it does not have on-site display function, nor does it have functions such as integration, temperature and pressure compensation, alarm output, etc. This type of flowmeter (more precisely, it should be called a flow sensor) needs to be equipped with a flow sensor and an accumulator.

2、 What kind of flow height gauge needs to be equipped with a differential pressure transmitter? Answer: Differential pressure flow sensors (or throttling devices) need to be equipped with differential pressure transmitters because their measurement principle is based on the difference in pressure (i.e. differential pressure), hence the name.

3、 What kind of flowmeter requires temperature and pressure compensation? Answer: Generally speaking, gas and water vapor have a direct relationship with the temperature and pressure inside the fluid pipeline due to their volume, flow rate, and mass flow rate. Therefore, temperature and pressure compensation is generally required for accurate measurement.

4、 What is pulse? Answer: Pulse in the field of flow measurement instruments generally refers to the frequency pulse or volume pulse signal output by the flowmeter, which has a certain operational relationship with the fluid flow measured by the flowmeter.

2. What is the difference between a swirl flowmeter? The turbine flowmeter consists of a turbine, bearings, preamplifier, and display instrument. The principle of a turbine flowmeter is to place a turbine in the center of a pipeline, supported by bearings at both ends. When the fluid passes through the pipeline, it impacts the turbine blades, generating a driving torque for the turbine, which overcomes the friction torque and fluid resistance torque to produce rotation. Within a certain flow range, for a certain viscosity of the fluid medium, the rotational angular velocity of the turbine is proportional to the fluid flow velocity. Therefore, the fluid flow velocity can be obtained from the rotational angular velocity of the turbine, and the fluid flow rate through the pipeline can be calculated. The rotational speed of the turbine is detected by a sensing coil installed outside the casing. When the turbine blades cut the magnetic field lines generated by the permanent magnetic steel inside the casing, it will cause changes in the magnetic flux in the sensing coil. The sensing coil will send the detected magnetic flux periodic change disturbance signal to the front end. Amplifier, amplifying signals Shaping generates a pulse signal proportional to the flow rate, which is sent to the unit conversion and flow accumulation circuit to obtain and display the accumulated flow value; At the same time, the pulse signal is also sent to the frequency current conversion circuit, which converts the pulse signal into an analog current and indicates the instantaneous flow rate value. The measured fluid impacts the turbine blades, causing the turbine to rotate. The speed of the turbine changes with the change of flow rate, that is, when the flow rate is high, the speed of the turbine is also high. Then, the speed of the turbine is converted into electrical pulses of the corresponding frequency by the magneto electric con

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