Household watermeter on-site calibration instrument and calibration method thereof

A technology for calibrating meters and water meters, which is applied in the direction of instruments, testing/calibrating devices, measuring devices, etc. It can solve problems such as large operating errors, inconvenient water meter readings, and affecting the accuracy and reliability of on-site meter calibration. The effect of high efficiency and convenient reading

Active Publication Date: 2014-09-03
NINGBO WATER METER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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...

Method used

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  • Household watermeter on-site calibration instrument and calibration method thereof
  • Household watermeter on-site calibration instrument and calibration method thereof

Examples

Experimental program
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Embodiment 1

[0017] Embodiment 1: An on-site meter calibration instrument for household water meters, characterized in that it includes an on-site meter calibration instrument 1 and an external photoelectric reflection electromechanical conversion device 2; wherein, the on-site meter calibration instrument includes a computer 11, and the computer 11 is connected to There are: a standard water meter 12, the standard water meter 12 is an electronic water meter, which is used to output electrical signals such as instantaneous flow and cumulative flow of the standard water meter to the computer 11; an external parameter input device 13 and an external command input 14, which are used for Input measurement parameters and measurement instructions in the computer 11; an instantaneous flow regulating valve 15, which is used to adjust the flow through the standard water meter 12 to a specified instantaneous flow value; measure the opening and closing control valve 16, which is used to open The on-si...

Embodiment 2

[0019] Embodiment 2: A method for calibrating household water meters by using the on-site calibration instrument for household water meters according to claim 1, which is characterized in that it includes the following steps: 1) inputting all values ​​in the on-site calibration instrument 1 The indication error value of the standard water meter 12 under different instantaneous flow rates, the error value is given by the verification of the measuring device with higher measurement accuracy; at the same time, input the pulse equivalent of the measured water meter (the pulse equivalent is the cumulative value represented by each output pulse The flow rate is the volume value of the passing water, which can be expressed by: the volume value of the passing water / pulse, which is provided by the manufacturer of the measured water meter); at the same time, the calibration value under different instantaneous flow conditions is set on the on-site meter calibration instrument 1 Meter wate...

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PUM

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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...

Claims

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Application Information

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IPC IPC(8): G01F25/00
Inventor 姚灵
Owner NINGBO WATER METER
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