Electronic water meter with correction function

Abstract

The invention discloses an electronic water meter with correction function. The electronic water meter comprises a water meter cavity body composed of a flow sensor and having a water inlet and a water outlet, an impeller arranged in a metering passage between the water inlet and the water outlet, and an electronic integrating display, wherein the flow sensor is used for collecting a rotation signal of the impeller and transmitting the rotation signal to the electronic integrating display; the electronic integrating display is used for receiving the rotation signal of the impeller, and sectionally correcting the flow measurement characteristics of the water meter to meet the standard according to the rotation signal. In comparison with the prior art, the electronic water meter is convenient and simple in operation, and can correct the flow measurement characteristics of the water meter to meet the standard as long as the repeatability and stability of the water meter during operation meets the measurement requirement, thereby ensuring flow characteristics of the water meter, realizing personalized parameter correction of the meter, ensuring product yield, lowering cost and shortening development time.

Description

technical field [0001] The invention belongs to the technical field of fluid flow detection equipment, and in particular relates to an electronic display water meter with a correction function. Background technique [0002] Water meter products are large in quantity, wide in scope and complete in category, including mechanical water meters, electronic water meters and water meters with electronic devices, etc., which are not only used for trade settlement of water charges, but also for process control of industrial and agricultural water consumption. Its important role in scientific water use and rational water use is being recognized by people. [0003] The main problems that the impeller type water meter of prior art exists are: [0004] First of all, the flow measurement characteristics of the water meter in the production process can only be determined by the design at present, and the assembled water meter cannot adopt the method of segmental calibration to make its me...

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Problems solved by technology

[0004] First of all, the flow measurement characteristics of the water meter in the production process can only be determined by the design at present, and the assembled water meter cannot adopt the method of segmental calibration to make its measurement characteristics meet the standard requirements, which will cause the error of many water meters to exceed the maximum allowable error range or borderline

At present, the common practice is to replace the parts of the water meter or improve the product design of the water meter. This method not only cannot guarantee the product qualification rate, but also costs a lot and takes a long time;

[0005] Secondly, when the temperature changes greatly (for example, the water temperature changes from about 0.1-10°C in winter to about 15-30°C in summer), the small flow measurement characteristics of the impeller water meter will change with the viscosity of the measured medium. Significantly changed, causing water meters calibrated in summer to be out of tolerance in winter

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