Electromagnetic flux converter simulated calibration apparatus

Abstract

The invention relates to an analogue calibration device for an electromagnetic flow converter, solving the calibration problem of the electromagnetic flow converter. The technical proposal includes that the analogue calibration device comprises a frequency receiving circuit with the input end connected with the output end of the calibrated electromagnetic flow converter to be calibrated and the output end connected with the input interfaces of a single chip microcomputer and peripheral circuits; a communication circuit with the input end connected with signal interfaces of the single chip microcomputer and peripheral circuits and the output end connected with the calibrated electromagnetic flow meter converter; a LCD interface with the input end connected with the output ends of the single chip microcomputer and peripheral circuits; the single chip microcomputer and peripheral circuits with the input ends connected with the output ends of a keystroke circuit and the frequency receiving circuit and the output ends connected with an analogue signal generating circuit, the communication circuit and the LCD interface; an exciting signal transfer circuit with the input end connected with the output end of the exciting circuit of the electromagnetic flow converter to be calibrated; and an analogue signal generating circuit with the input end connected with the output ends of the exciting signal transfer circuit, the single chip microcomputer and peripheral circuits and the output end connected with the input end of the electromagnetic flow converter to be calibrated.

Description

Technical field: [0001] The invention relates to an electromagnetic flowmeter for measuring the volume flow of a conductive liquid continuously flowing through an instrument, in particular to an analog calibration device for an electromagnetic flow converter in the electromagnetic flowmeter, through which the analog calibration of the electromagnetic flow converter can be realized anytime and anywhere. technical background [0002] Electromagnetic flowmeter is a new type of flow measuring instrument developed rapidly with the development of electronics and communication technology in the 1960s. It is made according to Faraday's law of electromagnetic induction and is used to measure the volume flow of conductive fluids. Due to its unique advantages, it has been widely used in the measurement of various conductive liquids in industry. For example, measuring various acids, alkalis, salts and other corrosive liquids; various flammable and explosive media; various industrial sewa...

AI Technical Summary

Problems solved by technology

The electromagnetic flowmeter includes the electromagnetic flow sensor and the electromagnetic flow converter, which must be calibrated before leaving the factory. The electromagnetic flow converter is generally calibrated together with the electromagnetic flow sensor on the actual pipeline during the production process, that is, the real flow calibration method. , but the real-flow calibration method exists: A. The construction of the calibration device is complicated and expensive; B. The accuracy of the real-flow calibration cannot represent the actual accuracy used on site; , the patent No. CN1908599A "based on the point-by-point measurement of the electromagnetic flowmeter dry calibration method of the inner surface of the pipe section" and the patent No. CN1908598A "based on the point-by-point measurement of the plane magnetic field dry calibration method of the electromagnetic flowmeter" patent disclose the electromagnetic flow The dry calibration method of the sensor in the meter, but the calibration literature of the electromagnetic flow converter in the electromagnetic flow meter has not been seen. In addition, the electromagnetic flow converter and the electromagnetic flow sensor must be used together. With the increasing application of electromagnetic flowmeter Widely, how to improve the interchangeability of electromagnetic flow converters and electromagnetic flow sensors is also of great significance in field applications and production processes

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