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『Temperature and pressure compensation of vortex flowmeter』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
What are the functions of a vortex flowmeter?
Function
1. The body also integrates temperature and pressure compensation function, which can measure the standard volume flow rate or standard mass flow rate of the fluid..
2、 Fully intelligent and digital circuit design, capable of automatically compensating for measured fluid density or standard condition volume calculation.
3、 The new digital filtering and correction functions make flow measurement more accurate and reliable.
4、 The battery powered type can work continuously for more than two years without the need for an external power source.
5、 The brand new dot matrix Chinese character LCD display is more convenient to use and operate. Additional information: The flow range indicated in the instruction manual for common faults of vortex flow juice refers to the flow range used for specific reference media in the side nucleus, such as liquid, which generally refers to ambient water. When used for other media, the available flow range will vary depending on the viscosity, durability, and density of the media. Due to the use of diesel with a viscosity higher than water and a density lower than water as the calibration medium in the oil flow standard device, the lower limit flow rate of the flowmeter is generally increased accordingly, narrowing the available flow range. Therefore, it is normal for the performance of vortex flowmeters to deteriorate at low flow rates when calibrated on oil flow calibration devices. It is not difficult to infer from this that if liquefied petroleum gas (a low viscosity medium) is used to calibrate the vortex flow juice, the opposite result will be better than water.
2. Why is temp
When measuring gases with a vortex flowmeter, temperature and pressure compensation is necessary. The main reasons include the compressibility of the gas, ensuring measurement accuracy, and meeting the needs of industrial applications. Specifically, the compressibility of gases is high due to their large molecular spacing and strong compressibility, and their density is significantly affected by temperature and pressure.
. According to the ideal gas state equation ($PV=nRT $, where $P $is pressure, $V $is volume, $n $is the amount of substance, $R $is the molar gas constant, and $T $is temperature), when the amount of substance remains constant, changes in temperature and pressure will cause changes in gas volume and density. For example, when the pressure increases, gas molecules are compressed, the number of molecules per unit volume increases, and the density increases; When the temperature rises, the volume of the gas expands and the density decreases. This density change directly affects the accuracy of flow measurement. Image: Xiamen Jingchuan Integrated Vortex Flow Meter ensures measurement accuracy and differs from standard condition settlement: Gas is usually settled based on the volumetric flow rate under standard conditions (such as 0 ℃, 1 standard atmosphere), but the actual temperature and pressure during measurement are often different from the standard conditions. If temperature and pressure compensation is not performed, directly calculating based on the measured volumetric flow rate will result in significant deviations from the true flow rate under standard conditions. For example, the volumetric flow rat