Due to the compressibility of gases, their flow measurement is more complex than that of liquids, andVortex flow meterThe output signal is not only related to the input signal, but also related to the density of the gas. The density of the gas is a function of temperature and pressure (referred to as temperature and pressure). Therefore, temperature and pressure compensation are common issues in gas flow measurement.

The density of steam is related to humidity as well as temperature and pressure. In recent years, new Vortex flow meters have emerged continuously, making the temperature and pressure compensation of gas flow measurement simple and accurate, thus improving the measurement accuracy.

Instrument classification for temperature and pressure compensated Vortex flow measurement media

1. When measuring gas, temperature and pressure compensation need to be performed at the same time; gas usually precipitates in the standard condition volume flow rate. Because when the volume of a gas flow changes under temperature or pressure, the flow rate changes.

2. When measuring superheated steam, the temperature and pressure should be compensated at the same time; the flow rate of steam is usually determined by its quality. Because of any change in temperature or pressure, the density of the steam changes and so does the mass flow rate.

3. When measuring saturated steam, a single temperature compensation or a single pressure compensation is required.

4. The density of saturated steam has a fixed corresponding relationship with temperature or pressure (saturated steam density meter). Knowing any of them allows the density of saturated vapor to be determined.

Why does the Vortex flow have no flow indication?

1. ConfirmVortex flow meterWhether it is connected to the power supply, check whether the voltage output by the power circuit board is normal, or try to replace the entire power circuit board to determine whether it is good or bad.

2. Check whether the cable is intact and the connection is correct.

3. Check the steam flow direction and whether the liquid in the pipe is full. For those that can be measured in both positive and negative directions, if the directions are inconsistent, although it can be measured, the setting shows that the flow rate is inconsistent in both positive and negative directions, it must be corrected.

4. If the workload of disassembling the sensor is large, you can also change the direction of the arrow on the sensor and reset the indicator symbol. The incomplete flow of liquid in the pipeline is mainly caused by the improper installation position of the Vortex flow meter. Measures should be taken during installation to prevent the liquid in the pipe from not filling the pipe.

5. Check whether the electrodes on the inner wall of the transmitter are covered with a layer of liquid scarring. For measuring steam that is prone to scarring, it should be cleaned regularly.