⎝⎛星力捕鱼⎞⎠

⎝⎛星力捕鱼⎞⎠ page Company Profile ⎝⎛星力捕鱼⎞⎠ Product center Quality system marketing network After sales service Recruitment contact us
Flow meter series
Temperature instrument series
Pressure instrument series
Calibration instrument series
Level instrument series
Digital display instrument series
Transmitter instrument series
Wire and cable series
Bridge instrument cabinet series
Pipe fitting valve series

Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
0517-86900921
0517-86900920
Fax: 0517-86900902
Postcode: 211600
http://zzyfwh.com
Email: chinadongxiang@163.com
Industry Information
How to understand the performance parameters of the flow meter
2011-10-16 9:03:03

被测量对象的参数 ,这时候便产生了“误差”这个概念 The flow meter cannot accurately measure the parameter value of the measured object , and at this time, the concept word of "error" is generated . 误差 分为“相对误差” 和“绝对误差”,绝对误差与真实值 之间的 商值 我们称之为 相对误差,测量值与真实值 之间的 差值 我们则称之为 绝对误差。 We divide this error into "relative error" and "absolute error". The quotient between absolute error and true value is called relative error, and the difference between measured value and true value is called Absolute error. 除了稳定性,抗干扰性 流量计的 影响之 外,响应时间、准确度、灵敏度、量程漂移和零点漂移等 等也是对 流量计 性能参数 有着直接影响的 Excluding the influence of stability and anti-interference on the flowmeter , response time, accuracy, sensitivity, range drift and zero drift, etc. also have a direct impact on the performance parameters of the flowmeter .

几个流量计参数概念 仅供参考: Jinhu Dongxiang Co., Ltd. summarized the following flow meter parameter concepts for reference only:

当被测参数发生变化时 我们称之为 响应时间,被测值要经过一段时间才能 通过 流量计 指针 准确地表示出来,这段 被测参数 之间 发生 变化 滞后的时间 我们称之为 仪表的反应时间 1. When the measured parameter changes, we call it the response time. It takes a period of time for the measured value to be accurately represented by the flowmeter pointer . The time lag between the change between the measured parameter and the measured parameter is called It is the response time of the instrument ;

流量计准确度 我们通常也称之为 精确度, 就是 接近真实值的 测量结果 准确程度。 Second, the accuracy of the flowmeter is usually called accuracy, which is the accuracy of the measured result close to the real value . ,亦可以用 绝对误差来表示 It can be expressed by relative error or absolute error ;

流量计灵敏度 我们通常 指的是仪表测量的灵敏程度。 Third, flowmeter sensitivity We usually refer to the sensitivity of the meter. 引起 些变化的被测参数的变化量与常用仪表输出的变化量之比来表示 It is usually expressed by the ratio of the amount of change in the measured parameter that caused these changes to the amount of change in the output of a common instrument . 则是 用阻尼时间表示(如电流表测电阻) 有的 则是 用时间常数 表示(如热电阻测温) Some are expressed by damping time (such as resistance measurement by ammeter) , and some are expressed by time constant (such as temperature measurement by thermal resistance) ;

流量计量程漂移和零点漂移 我们通常 都是指对仪表确认的最大量程和相对零点 之间 进行多次测量后, 采用 平均变化值相对于量程的百分比来表示 Fourth, the flow meter range drift and zero point drift usually refers to the meter's confirmed maximum range and relative zero after multiple measurements, the average change value relative to the range is used to express .