Does the vortex flowmeter require temperature and pressure compensation

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What flow meter is used to measure superheated steam/saturated steam? Vortex flowmeters are generally used to measure superheated steam and saturated steam. To ensure measurement accuracy, appropriate temperature or pressure compensation should be selected based on the characteristics of both. Saturated steam: Water is heated at a certain pressure until it boils and vaporizes. At this point, the steam temperature is equal to the saturation temperature, which is called saturated steam. The saturation pressure and saturation temperature correspond to each other, and both pressure compensation and temperature compensation can be used during measurement. Due to the relatively easy pressure compensation and high measurement accuracy, pressure compensation methods are mostly used in practical applications, such as the use of LUB split vortex flowmeter embedded with HSYB pressure transmitter. Overheated steam: Saturated steam continues to be heated, and when the temperature rises and exceeds the saturation temperature at that pressure, it is called superheated steam. Superheated steam is a single-phase fluid with characteristics similar to gases. Its temperature and pressure are two independent variables, and its density is determined by both. When measuring, any change in temperature or pressure can cause a change in steam density, which in turn affects the mass flow rate. Therefore, temperature and pressure compensation must be performed simultaneously to ensure accuracy, such as when using a LUB split vortex flowmeter with HSYB pressure transmitter and WZPK platinum resistor. In addition, measuring the flow rate of high-temperature steam (superheated steam or saturated steam) can also use LUB integrated vortex flowmeter
Vortex flowmeter with temperature
with temperature and pressure compensation function, which has relatively low cost.

2. Whether the vortex flowmeter needs temperature and pressure compensation

Whether the vortex flowmeter needs temperature and pressure compensation depends on the actual needs.

. The following is a specific analysis: If the operating condition deviation is not significant or the requirements are not high, the vortex flowmeter may not require temperature and pressure compensation. Because the vortex flowmeter itself is a velocity type flowmeter, the flow rate is calculated by measuring the flow velocity of the medium through the Ling method. If the operating conditions are not significantly different from the design conditions or the measurement accuracy requirements are not high, the influence of the density change of the medium on the flow rate can be ignored, so there is no need to perform temperature and pressure compensation using the ruler. If accurate measurement is required, the vortex flowmeter needs to be calibrated for temperature and pressure. Because flow calculation involves medium density, and the density of substances will vary under different temperature and pressure conditions. If the working conditions change, the density of the medium will also change accordingly, which will cause deviations in the measurement results of the flowmeter. In order to obtain accurate flow data, it is necessary to perform temperature and pressure compensation to correct measurement errors caused by changes in medium density.

3. Are there any instruments that integrate flow meters and thermometers together?

There are many instruments on the market that integrate flow meters and thermometers together. The foll

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