孔板流量計程序解析以及組成
信息來源: 華恒 | [ 2019-04-11 ] 點擊量: 335

   孔板流量計程序解析以及組成的知識講解:西安華恒儀表介紹:孔板流量計按國標規定進行設計、制造和檢定的標準孔板無需實流標定,精度高、結構簡單、制造成本低,但壓力損失在所有標準節流裝置中最大,不適用于要求壓力損失小的情況,標準孔板廣泛用于石油、化工、冶金、電力等行業。

 
  Procedure analysis and knowledge explanation of orifice flowmeter:Introduction of Xi'an Huaheng Instrument:Standard orifice flowmeter designed,manufactured and calibrated according to the national standard does not need real-flow calibration.It has high accuracy,simple structure and low manufacturing cost,but the pressure loss is the largest in all standard throttling devices,and it is not suitable for situations requiring low pressure loss.Standard orifice plate is widely used.Petroleum,chemical,metallurgical,electric power and other industries.
 
  孔板流量計主要由孔板節流裝置,三閥組,差壓變送器,流量積算儀,溫溫度變送器,壓力變送器組成
 
  Orifice flowmeter mainly consists of orifice throttle device,three valve groups,differential pressure transmitter,flow accumulator,temperature transmitter and pressure transmitter.
 
  孔板流量計可廣泛應用于石油、化工、天然氣、冶金、電力、制藥等行業中,各種液體、氣體、天燃氣以及蒸汽的體積流量或質量流量的連續測量。但是許多人不知道孔板流量計的程序分析,今天我就和大家探討一下孔板流量計的程序分析
 
  Orifice plate flowmeter can be widely used in petroleum,chemical industry,natural gas,metallurgy,electric power,pharmaceuticals and other industries,continuous measurement of volume flow or mass flow of various liquids,gases,natural gas and steam.But many people don't know the program analysis of orifice flowmeter.Today I will discuss with you the program analysis of orifice flowmeter.
 
  1.瞬時量
  溫度量:必須轉換成絕對攝氏溫度;即+273.15;
  壓力量:必須轉換成絕對壓力進行計算。即表壓+大氣壓力;
  補償計算根據計算公式,數據保存在PLC的寄存器內。同時在intouch畫面上做監視。
 
  1.instantaneous quantity
  Temperature:must be converted to absolute Celsius temperature,i.e.+273.15;
  Pressure:It must be converted to absolute pressure for calculation.That is,surface pressure+atmospheric pressure;
  The compensation calculation is based on the calculation formula,and the data are stored in the register of the PLC.At the same time,monitor on the InTouch screen.
 
  2.累積量
  采用2秒中一個掃描上升沿觸發進行累積,即將補償流量值(Nm3/h)比上1800單位轉換成每2S的流量值,孔板流量計進行累積求和,畫面帶復位清零功能。
 
  2.cumulants
  A scanning rising edge trigger in 2 seconds is used to accumulate,i.e.the compensated flow value(Nm3/h)is converted from 1800 units to the flow value of every 2S.The orifice flowmeter is used to accumulate and sum,and the picture has reset and zero-clearing function.
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