Liquid flow standard calibration device
A verification device and liquid flow technology, which is applied in the field of standard verification devices, can solve the problems of front and back stroke difference, occupy a large space and floor space, and require a lot of investment, and achieve the effects of high verification accuracy, avoiding errors, and avoiding a lot of investment
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[0012] (Example 1. Level gauge detection mode)
[0013] in figure 1 Among them, the working valve 2 and the verification valve 10 are both pneumatic shut-off valves. A standard pressure gauge 9 is installed on the lower pipe of the standard weighing container 8. When the verification valve is closed and the liquid level in the standard weighing container gradually rises, The change of the liquid level corresponds to the pressure sensed by the standard pressure gauge, and the standard pressure gauge can measure the liquid level accordingly.
[0014] The working process of this embodiment: after several verification flow points of the flow meter 5 to be verified are input into the industrial computer in advance, the entire verification process will be automatically performed under the control of the industrial computer. At a certain verification flow point, the industrial computer first opens the pneumatic working valve and the pneumatic verification valve, starts the circulating pu...
Example Embodiment
[0015] (Embodiment 2. Electronic scale detection mode)
[0016] The standard weighing container, the verification valve and the connecting pipeline are integrated as a whole, and the overall weight is applied to the electronic scale. When the verification valve is closed, the electronic scale will weigh the change of the weight. When the weight reaches the starting weight of the timer Start timing and end timing when the weight reaches the end weight. According to the weight difference between the two time points and the timing time, the accurate weight flow rate of the verification flow point can be calculated, and the accurate value can be compared with the verification. The output signal value corresponding to the flowmeter. The advantage of this embodiment is that the weight measurement is usually more accurate than the volume measurement.
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