Non-magnetic water meter calibration device

Abstract

The invention provides a non-magnetic water meter calibration device, which comprises a rotating speed power mechanism for simulating the rotating speed of water flow, a metering mechanism for metering the rotating speed of the simulated water flow, a non-magnetic PCB base for supporting a non-magnetic detection coil and a non-magnetic PCB, a distance adjusting mechanism for adjusting the relativedistance between the non-magnetic PCB base and the metering mechanism, and a rack, wherein the metering mechanism is provided with a connecting part for arranging a semicircular metal pointer; the rack comprises a base; and the rotating speed power mechanism is arranged on the base, the power output end of the rotating speed power mechanism is connected with the power input end of the metering mechanism, and the non-magnetic PCB base, the metering mechanism and the rotating speed power mechanism are sequentially arranged from top to bottom. The accuracy of the non-magnetic induction assemblyis verified by comparing the rotating speed metering value of the metering mechanism with the rotating speed induction value inducted by the non-magnetic detection coil, the optimal detection distanceis obtained by adjusting the distance between the non-magnetic PCB base and the metering mechanism through the distance adjusting mechanism, and a basis can be provided for optimization design and production and manufacturing of the non-magnetic water meter.

Description

technical field [0001] The invention relates to the technical field of water meter calibration, in particular to a non-magnetic water meter calibration device. Background technique [0002] The non-magnetic water meter is a traditional mechanical water meter with a raised semicircular metal pointer. When the water flow passes, it drives the semicircular metal pointer to rotate, and the rotation of the metal pointer forms an electromotive force on the non-magnetic metering plate, thereby realizing the reading of non-magnetic metering data. Therefore, the optimal detection distance between the non-magnetic metering board and the semicircular metal pointer is a key factor affecting the accuracy of non-magnetic metering. Accuracy of magnetometry. [0003] When the non-magnetic water meter is mass-produced, whether the product is qualified or not can only be tested and identified after the electronic modules and mechanical parts of the entire non-magnetic water meter are assemb...

AI Technical Summary

Problems solved by technology

[0003] When the non-magnetic water meter is mass-produced, whether the product is qualified or not can only be tested and identified after the electronic modules and mechanical parts of the entire non-magnetic water meter are assembled. Once there is inaccurate water measurement, it is difficult to determine the cause of the problem. Due to the mechanical part or the electronic module part, the entire non-magnetic water meter can only be regarded as a substandard product, resulting in waste of resources

On the other hand, when the non-magnetic water meter in use fails and the water measurement is inaccurate, the maintenance personnel cannot quickly and accurately find the cause of the problem

[0004] Traditionally, a Chinese patent (application number: CN200920119153.2) discloses a device for testing the water metering performance of an electronic module in a non-magnetic water meter, which includes a housing in which a stepping motor and a signal processing circuit are arranged. The rotor of the motor is connected with a disc, the upper surface of the disc is provided with a metal patch, and the housing is provided with two grooves above the disc. The advantage is that by setting an insulating disc on the rotor of the stepping motor disc, and set a metal patch on the upper surface of the disc, and set two grooves above the disc for placing the LC sensor of the electronic module under test, but this patent can only test whether the water metering performance of the electronic module is intact , it is impossible to test the optimum value of the detection distance and the accuracy of the electromagnetic measurement of the overall water meter

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