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让流速稳定的净水流过流量计和检定装置,在装置末端把采样净水切换注入已在电子天平上去皮的采样容器;装置同时由电脑启动计时器。采样到足够的重量后,装置由电脑控制停止采样和计时。在采样期间,计算机通过通信端口连续读取流量计的瞬态流量值并计算其平均值,得到测得值Fx及其标准偏差。用电子天平称量出采样容器内的净水质量并与采集时间一起计算出标准瞬态流量值Fs,通过计算得到流量计瞬态流量误差指标。
Let the steady flow of water flow through the flowmeter and the test device, the device at the end of the switch to the sample water purification injection into the sample container has been tared on the electronic balance; device at the same time start the computer timer. After sampling enough weight, the device is controlled by the computer to stop sampling and timing. During the sampling period, the computer continuously reads the transient flow value of the flowmeter through the communication port and calculates the average value thereof to obtain the measured value Fx and its standard deviation. Weighing the quality of the purified water in the sample container with the electronic balance and calculating the standard transient flow value Fs together with the collection time, the error index of the transient flow of the flowmeter is obtained through calculation.