Liquid level meter automatic measurement and verification device and method
A technology of automatic measurement and verification device, applied in the field of measurement, can solve the problems of complex operation, long time, low verification efficiency, etc., and achieve the effect of high degree of automation, easy operation and simplified operation process
Active Publication Date: 2017-12-12
NAT INST OF METROLOGY CHINA
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Problems solved by technology
Due to the long time required for water supply, drainage and liquid level stabilization when the liquid level changes, the reproducibility of the standard value of the liquid level is poor, the operation is complicated, and the verification efficiency is low, so it is difficult to meet the requirements of the liquid level gauge verification
Especially when the liquid level is greater than 2m, the method of replacing the real liquid level with the simulated liquid level does not consider the influence of the real liquid level and the simulated liquid level on the measurement performance of the liquid level gauge, which increases the uncertainty of the liquid level measurement and verification results of the liquid level gauge
Verification data processing is also a tedious process that takes a lot of time
Method used
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[0068] Hereinafter, the invention will be described more fully with reference to the accompanying drawings, in which various embodiments are shown. However, this invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
[0069] Hereinafter, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings.
[0070] Such as figure 1 As shown, an automatic measurement and verification device (hardware part) of a liquid level gauge includes a liquid level gauge position control component 1 , a liquid level control component 2 and a data acquisition control system 3 . In the figure, the linear motion unit 11 of the liquid level gauge position control assembly 1 is installed vertically ...
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The invention discloses a liquid level meter automatic measurement verification device and method, belongs to the technical field of measuring devices, and is suitable for the verification of other liquid level meters except side-mounted liquid level meters, pressure type liquid level meters and capacitance type liquid level meters. The automatic measurement and verification device includes a liquid level gauge position control component, a liquid level control component, and a data acquisition control system. The liquid level gauge position control assembly includes a linear motion unit, a motion unit support frame, a servo motor, and a liquid level gauge support frame, and the liquid level gauge to be tested is installed on the liquid level gauge support frame; the liquid level control assembly includes a stainless steel tube , overflow port, liquid supply pump, and overflow pump to realize accurate reproduction of liquid level; the data acquisition control system includes a computer, a controller, a data acquisition module, a sensor, a servo driver, and the sensor includes a temperature sensor, a pressure sensor, Multiturn absolute encoder. The invention has the advantages of keeping the liquid level constant, moving the liquid level gauge accurately, and realizing rapid and accurate measurement verification and measurement performance evaluation of the liquid level gauge.
Description
technical field [0001] The invention belongs to the device and method for automatic verification of measuring instruments in the field of metering, in particular to the device and method for automatic metering verification and measurement performance analysis and evaluation of liquid level gauges, and is suitable for use in addition to side-mounted liquid level gauges and pressure-type liquid level gauges. , Verification of liquid level gauges other than non-capacitive liquid level gauges. Compared with other liquid level gauge verification devices and methods, the present invention keeps the liquid level unchanged, the liquid level gauge moves accurately, and realizes rapid and accurate measurement verification and measurement performance evaluation of the liquid level gauge. Background technique [0002] Liquid level measurement is used in various industries such as petroleum energy, river hydrological observation and monitoring, pharmaceutical chemical industry, metallurg...
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IPC IPC(8): G01F25/00
Inventor 郭立功于佩瑞张成刘杰刘子勇王明军王金涛关聪佟林
Owner NAT INST OF METROLOGY CHINA