Household watermeter on-site calibration instrument and calibration method thereof

Abstract

The invention discloses a household watermeter on-site calibration instrument. The ousehold watermeter on-site calibration instrument comprises an on-site calibration instrument body and an external conversion and sending device. The on-site calibration instrument body comprises a computer, and the computer is connected with a standard watermeter, an external parameter input device, an external command input device, an instantaneous flow adjustment valve, a measurement starting-closing control valve, a short-distance wireless receiver and a measurement result display device. The external conversion and sending device comprises a photoelectric reflection electromechanical converter and a short-distance wireless emitter. The invention further discloses a calibration method for a household watermeter through the household watermeter on-site calibration instrument. Compared with the prior art, the household watermeter on-site calibration instrument and the calibration method adopt the methods of wireless communciaiton, electromechanical conversion reading, automatic data processing and the like, the indication error of the measured watermeter can be calibrated rapidly and accurately on site under the conditions of different instantaneous flow rates, reading is convenient, and the on-site watermeter calibration work efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of water meters, and in particular relates to an on-site calibration instrument for household water meters and a calibration method thereof. Background technique [0002] The traditional field measurement accuracy verification of household water meters is obtained by comparing the measured water meter with the standard water meter. The specific method is: 1) Connect the water outlet pipe in the resident’s home to the water inlet of the on-site meter calibration instrument through the hose, and the water outlet of the on-site meter calibration instrument is inserted into the water container through the hose; 2) The operator opens the meter calibration instrument The electric control valve, adjust the faucet to change the water flow, when the water flow from the faucet reaches the instantaneous flow value required by the calibration (judged according to the instantaneous flow value measured by the standard wat...

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Problems solved by technology

[0003] Since the opening and closing of the control valve is controlled by naked eye readings and manual operation, there are large operational errors in the calibration process, which will affect the accuracy and reliability of on-site meter calibration; in addition, due to the standard water meter and the measured The installation locations of the water meters are far apart, which will also bring great inconvenience to the reading of the water meter during on-site meter calibration, and reduce the work efficiency of on-site meter calibration.

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