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在石油化工生产中,计量工作日益为人们重视起来,进入装置的原料和送出车间的成品的累积流量的测量也就提到议事日程上来,比较重要的累积流量,一般多采用带有积算机构的仪表或积算器来测量,但是有些情况下:如暂时没有累积仪表、积算器;或者只在一段时间内核对一下物料量,就要碰到通过记录纸上的瞬时流量记录曲线来求取累积流量的问题。流量的记录纸有圆图和长图两种,记录纸的刻度又有均匀刻度方根刻度之分。以靶式流量计、节流装置和差压变送器测流量的记录纸为方根刻度的;但是上述测量信号经开方器开方或节流装置直接配用流量差变压送器以及用远传转子流量计等测量的情况下,记录纸就要采用均匀刻度的。所以两种刻度的记录纸的流量求积都是经常会碰到的。圆图记录纸的流量求积已有专用的方根流量求积仪,所以这里只介绍一下长图记录纸的流量求积的问题:
In petrochemical production, the measurement work is increasingly valued by people. The measurement of the cumulative flow of raw materials entering the plant and the finished products sent out of the workshop is also referred to the agenda. The more important cumulative flows are generally taken with the use of an integrated calculation unit Meter or totalizer to measure, but in some cases: If there is no accumulation of instruments, totalizers; or only in a period of time to check the amount of material, it is necessary to run through the recording paper instantaneous flow curve to find Take cumulative flow problems. The flow of recording paper, there are two kinds of chart and long chart, recording paper scale and square root of the average graduation scale. To target flow meter, throttling device and differential pressure transmitter measuring the flow of recording paper square root of the scale; However, the above measurement signal through the square root opening or throttling device with flow differential transformer and With far-reaching rotor flowmeter measurements, the recording paper should be uniform scale. Therefore, the two kinds of scale recording paper flow products are often encountered. Circular chart recording paper flow quadrat has a dedicated square root flow meter, so here only introduce long chart recording paper traffic quadrature problem: