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What should be noted when installing a V-cone flowmeter? The V-cone flowmeter is a flow measurement instrument mainly used for measuring the flow of liquids and gases. During use, the V-cone flowmeter has high measurement accuracy and good stability, and has been widely used in the field of flow measurement. What precautions should be taken when installing a V-cone flowmeter? 1. Pay attention to the flow direction of the flowmeter and do not install it upside down.
2、 All connecting components must be tightened. All gaskets must not protrude from the inner wall of the pipeline.
3、 The high and low pressure ports of the differential pressure transmitter cannot be installed upside down.
4、 When measuring liquids, it is necessary to prevent gases contained in the liquid from entering and accumulating in the measuring chamber of the pressure tube and transmitter.
5、 When measuring gases, it is necessary to prevent liquids that may be contained in the gas from entering and accumulating in the pressure tube and transmitter measurement chamber.
6、 When measuring high-temperature liquids and gases, precautions should be taken to prevent damage to the transmitter from high-temperature media. When measuring strongly corrosive, easily crystallized, and clogged media, corrosive media should be prevented from entering the transmitter.
7、 The installation location of differential pressure transmitters should be away from electrical noise, such as high-power transformers, motors, welding machines, and strong power sources. There should be no radio frequency interference near the instrument, otherwise it will interfere with the normal operation of the differential pressure transmitter.
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9、 Flow meters should not be installed on overhead long and thin pipelines. If installation is necessary, the part where the flow meter is installed must be fixed in the pipeline.
10、 The measurement of steam is a difficult task in flow measurement. The thermal properties of steam are more complicated than ideal gases, and the laws of steams thermal properties cannot be obtained solely through theoretical methods. In many cases, experimental methods are used to obtain some data to summarize some formulas. Moreover, the accuracy of steams return measurement is not high (GB/T17167 Enterprise Energy Measuring Instrument Performance Requirements require a steam accuracy of+/-2.5% for trade settlement), and the installation requirements are particularly strict. The general principle for installation is that: A) the position of the transmitter should be lower than the condenser tank in any situation. B) The condensation tank and liquid-phase pressure tube are completely in the same liquid state at the same temperature. C) The flow path of the vapor phase pressure tube is unobstructed and the interior of the tube is dominated by the vapor phase.
2. What are the applicable working conditions for a 700mm V-cone flowmeter?
The applicable working conditions for a 700mm caliber V-cone flowmeter can be divided into two categories: general industrial working conditions and special working conditions. The core is suitable for fluid measurement scenarios with high flow rate, high viscosity, and multiple impurities.
Universal family standard operating conditions - Measurement medium is clean liquid: such as
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