Impeller type wide range electronic water gauge and calibrating method thereof

An electronic water meter, wide range technology, applied in the direction of measuring device, test/calibration device, liquid/fluid solid measurement, etc.

Inactive Publication Date: 2013-01-16
NINGBO WATER METER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to ensure that the water meter meets the measurement accuracy requir

Method used

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  • Impeller type wide range electronic water gauge and calibrating method thereof
  • Impeller type wide range electronic water gauge and calibrating method thereof
  • Impeller type wide range electronic water gauge and calibrating method thereof

Examples

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Embodiment 1

[0049] See figure 1 , an impeller-type wide-range electronic water meter, comprising a water meter body, the water meter body is provided with an electromechanical conversion device for measuring the speed of the impeller of the water meter; the electromechanical conversion device is connected with a pulse for receiving the output of the electromechanical conversion device signal and a signal preprocessing component for preprocessing the signal; the signal preprocessing component is connected to an embedded microcomputer, and the embedded microcomputer is provided with an input interface and an output interface, and the embedded microcomputer processes the signal preprocessing component The embedded microcomputer is connected with an electronic display and a wireless transceiver module for displaying the measurement results corrected by the embedded microcomputer.

[0050] Q

Q≤S 1

S 1 2

S 2 3

...

S i i+1

...

Q>S n+1

...

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PUM

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Abstract

The invention discloses an impeller type wide range electronic water gauge, which includes a water gauge body, an electro-mechanical transformation device, a signal pre-processing component, an embedded microcomputer and an electronic display, meanwhile, the invention further discloses an error correction method for the water gauge, which comprises the following steps: a, drawing a water gauge error curve through real flow measurement; b, measuring the impeller rate of the water gauge under the real flow condition, and taking the rate as a dividing value of a calibration interval; c, measuring and confirming the values of the standard impulse equivalent ki and the values of the correction factor Wi of flow dividing points; d, setting an error correction table in a storer; e, measuring and calculating the flow equivalence value in ti time quantum in the sampling period Ti, and confirming the corresponding value of ki and value of correction factor Wi through the error correction table; f, calculating and obtaining the volume value at the calibration interval; and g, finally displaying the measurement result. Compared with the prior art, the water gauge calibrated through adopting the method provided by the invention is greatly improved in metering performance and using function.

Description

technical field [0001] The invention belongs to the technical field of water meters, in particular to an impeller-type wide-range electronic water meter and a calibration method thereof. Background technique [0002] In recent years, the rapid development of water meter technology is mainly reflected in the improvement of flow measurement performance and the expansion of use functions. The quality of flow measurement performance is determined by the measurement range (that is, the common flow Q 3 with minimum flow Q 1 Ratio) and the maximum allowable error and other indicators. In order to ensure that the water meter meets the measurement accuracy requirements in a very wide range, the traditional impeller water meter is powerless. At present, the flow measurement range of most domestic mechanical water meters is between R=50 and 250, while the measurement range ratio of impeller water meters with built-in embedded computer systems in foreign countries has exceeded 1000 t...

Claims

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Application Information

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IPC IPC(8): G01F1/28G01F25/00
Inventor 姚灵
Owner NINGBO WATER METER
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