Abstract: The information on how to set the parameters of the totalizer when the orifice plate flowmeter measures saturated steam is provided by the excellent flowmeter and flowmeter manufacturers and quotation manufacturers. Orifice flowmeter is a high turndown ratio differential pressure flow device composed of standard orifice and multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter and pressure transmitter), which can measure gas, Flow of steam, liquid and natural gas. Widely used in stone. More flowmeter manufacturers choose models and price quotations. You are welcome to inquire. The following is the article details on how to set the parameters of the totalizer when the orifice flowmeter measures saturated steam. Orifice flowmeter is a high turndown ratio differential pressure flow device composed of standard orifice and multi-parameter differential pressure transmitter (or differential pressure transmitter, temperature transmitter and pressure transmitter), which can measure gas, Flow of steam, liquid and natural gas. It is widely used in process control and measurement in petroleum, chemical, metallurgy, electric power, heating, water supply and other fields. Orifice flowmeters are widely used in various fields of the national economy such as coal, chemical industry, transportation, construction, textile, food, medicine, agriculture, environmental protection and people's daily life. An important tool for improving economic efficiency and management level occupies an important position in the national economy. In process automation instruments and devices, flow meters have two major functions: as a detection instrument for process automation control systems and a total meter for measuring the quantity of materials. The orifice flowmeter is connected to the signal line and power line; open the inlet and outlet valves, and the openings of the inlet and outlet valves should be the same; open the stainless steel three-valve balance valve, slowly open the valves at the high and low pressure ends of the orifice, and close after the fluid passes through the flowmeter. Stainless steel three-valve balance valve can be used. The flow totalizer can measure and display, accumulate calculation, alarm control, transmit output, data acquisition and communication for various liquid, steam, natural gas, general gas and other flow parameters. Saturated vapor: When the liquid evaporates in a limited confined space, the liquid molecules enter the upper space through the liquid surface and become vapor molecules. Because the vapor molecules are in turbulent thermal motion, they collide with each other, and collide with the container wall and the liquid surface. When colliding with the liquid surface, some molecules are attracted by the liquid molecules and return to the liquid to become liquid molecules. . At the beginning of evaporation, the number of molecules entering the space is more than the number of molecules returning to the liquid. As the evaporation continues, the density of the space vapor molecules increases continuously, so the number of molecules returning to the liquid also increases. When the number of molecules entering the space per unit time is equal to the number of molecules returning to the liquid, the evaporation and condensation are in a dynamic equilibrium state. At this time, although the evaporation and condensation are still going on, the density of the vapor molecules in the space no longer increases. The state at this time is called the saturation state. The liquid in the saturated state is called saturated liquid, and its corresponding steam is saturated steam, but it is only wet saturated steam at first, and it is dry saturated steam after the moisture in the steam is completely evaporated. How to set the parameters of the integrator when the orifice flowmeter measures saturated steam? The orifice plate measures the saturated steam, compensates the density by temperature and pressure, and requires automatic cycle display of instantaneous flow and pressure, and the output is 4-20 mA. The supply and demand parties agree that the user's steam volume shall be measured at 1t/h when the flow rate is lower than 1t/h, and the flow rate is higher than 1t/h. At 40t/h, the excess part is measured by 1.5 times, and it is not measured when steam is not used. The parameters that users need to provide are as follows: Differential pressure transmitter (4~20mA.) Range is 60kPa Pressure transmitter (4~20mA.) Range is 2MPa Working pressure is 1.3MPa (gauge pressure) Temperature transmitter ( 4~20mA.) The range is 300℃, the working temperature is 195.04℃, the working density is 7.1062 kg/m3, the maximum flow rate is 50t/h =K×(dP×ρ) 1/2, known F=50000, dP=60ρ=7.1062, then k=2421.452. Instrument programming: Function menu prompt setting value function description FUN menu PSF 655 Menu entry password PIN 2 The main sensor is an orifice plate, and the differential pressure transmitter does not have a square root FC 4 Superheated steam temperature and pressure compensation UNIT 0 Instantaneous flow unit: t/h, cumulative flow is t. PAr menu PSP 655 Menu entry password SndP 17 Main flow signal input type 4-20mA input LodP 0.00 Main flow signal display zero point HidP 60.00 Main flow signal display full scale indP 40.00 Main flow signal design value SnP 17 Pressure channel input type 4-20mA input LoP 0.000 Pressure channel signal display zero point HidP 2.000 Pressure channel signal display full scale inP 1.300 Pressure signal design value Snt 17 Temperature channel signal input type 4-20mA input Lot 0.00 Temperature Channel signal display zero Hit 400.0 Temperature channel signal display full scale int 195.0 Temperature signal design value K 2421.5 Flow coefficient P0 0.10132 Local atmospheric pressure Cut 0.8 Small signal cutoff value, when the measured value of main flow is less than 0.8% of full scale, the instantaneous flow rate is 0, do not measure. out 1 Transmitter output type 4-20mA output Loo 0.00 Transmitter output zero Hio 50.00 Transmitter output full scale Fo 1.00 Protocol lower limit flow, when the flow rate is lower than 1t/h, measure at 1t/h Fs 40.00 Protocol upper limit flow and coefficient setting, When the flow rate is higher than 40t/h, the extra part is measured by 1.5 times or more, which is the whole content of this article. You are welcome to inquire about the flowmeter selection and quotation of our factory. 'How to set the parameters of the totalizer when the orifice flow meter measures saturated steam'
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