Insertion turbine flowmeter, vortex street flowmeter manufacturer, Guangdong flowmeter

Knowledge extension:

The Effect of Vortex Flowmeter on Temperature and Pressure Compensation in Measuring Steam Flow

Firstly, the use of steam flow meters can achieve more stable measurement results, with high repeatability and stable performance advantages, avoiding too much interference during the application process. With strong anti-interference ability, it has a more ideal stability effect. When applied in various industries such as industrial and mining enterprises, measuring various different substances can achieve better standards. Of course, the premise is to choose a legitimate manufacturer to purchase, Naturally, it will bring better usage advantages.

Secondly, the use of steam flow meters can achieve long-term stable measurement results, with small volume design and simpler results. Natural installation and construction can achieve better standards to avoid unnecessary impacts and losses. It can also meet the application requirements of different environments, without special maintenance and upkeep. In terms of usage cost, it will reach better standards, but in terms of application life, it cannot reach longer standards, If the pressure loss is relatively small, the measurement accuracy will naturally be very high.

Because of the Compressibility of gas, its flow measurement is more complicated than that of liquid. The output signal of vortex flowmeter is related not only to the input signal, but also to the gas density, which is a function of temperature and pressure (temperature and pressure for short). So there is a common problem of temperature and pressure compensation in gas flow measurement.

The density of steam is not only related to temperature and pressure, but also to humidity. In recent years, vortex flow meters have emerged continuously, making temperature and pressure compensation for gas flow measurement simple and convenient, thereby improving measurement accuracy.

Classification of medium in temperature and pressure compensated vortex flowmeter measurement

1. When measuring gas, temperature and pressure need to be compensated simultaneously; Gas is generally settled by volume flow in Standard temperature and pressure. Because when the volume flow rate, temperature, or pressure of a gas changes, the flow rate will change.

2. When measuring Superheated steam, temperature and pressure shall be compensated at the same time; Steam is generally settled based on mass flow rate. Due to any change in temperature or pressure, the density of steam will change, and the mass flow rate will also change accordingly.

3. When measuring saturated steam, single temperature compensation or single pressure compensation is required. The density of saturated steam has a fixed correspondence with temperature or pressure (saturated steam density table), and knowing any of them can determine the density of saturated steam.

Why does the vortex flowmeter not display flow?

1. Confirm whether the vortex flowmeter is connected to the power supply, check whether the output voltage of the power circuit board is normal, or try to replace the whole power circuit board to judge whether it is good or bad.

2. Check if the cables are intact and connected correctly.

3. Check the direction of steam flow and whether the liquid inside the pipe is full. For those that can be measured in both positive and negative directions, if the direction is not consistent, although it can be measured, but the set display flow does not match the positive and negative directions, it must be corrected. If the workload of dismantling the sensor is large, the arrow direction on the sensor can also be changed and the display instrument symbol can be reset. The incomplete flow of liquid in the pipeline is mainly caused by the improper installation position of the vortex flowmeter. Measures should be taken during installation to avoid causing the liquid in the pipeline to be insufficient.

4. Check if the electrode on the inner wall of the transmitter is covered with a liquid scar layer. For measuring steam that is prone to scar formation, it is necessary to regularly clean it.