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One-key zero-returning device of transmitter

A transmitter and button technology, applied in the field of sensors, can solve the problems of inaccurate operation results of potentiometers, expensive calibration equipment, unsatisfactory, etc., and achieve the advantages of convenient range zero point migration, simplified circuit structure, and less power consumption Effect

Inactive Publication Date: 2011-07-27
单尼斯科(上海)仪器仪表有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, this commonly used pressure transmitter must be calibrated by calibration equipment after the product is installed, and calibration requires a lot of manpower, time and expensive calibration equipment
Or if the existing circuit has a signal deviation during use, it is generally adjusted with a potentiometer; but the potentiometer is not accurate and the operation results are not satisfactory

Method used

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Embodiment Construction

[0023] To meet the needs of existing customers for zero point migration and zero drift correction in the process of using the transmitter, and to realize the requirements of the transmitter in a variable range environment, this invention specially designs this one-button zero return circuit device. In this device, the adjustment of the control output for the shift of the zero point of the range can be realized through simple button operations. The single-chip microcomputer technology is used in the device to realize the intelligent detection and control of the sensor system, which simplifies the user's operation;

[0024] The one-button return to zero circuit device of the present invention mainly includes a power supply module, a signal amplification power supply module, a button reset power supply module, a V / I conversion power supply module, a calibration output power supply module and a reference voltage power supply module, etc.; The main module functions are described in ...

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Abstract

The invention discloses a one-key zero-returning device of a transmitter, which comprises a power module, a signal amplifying module, a key zero returning module, a voltage to current (V / I) conversion module, a calibration output module and a reference voltage module. By adoption of the one-key zero-returning device of the transmitter provided by the invention, adjustment of zero shift of any point of the transmitter can be realized effectively, a trouble on replacement and configuration of a new transmitter is avoided for a user, correction of the zero shift caused by long-time use of a sensor can be also realized at the same time, and convenience is provided for intellectualization of a control system.

Description

technical field [0001] The invention relates to the field of sensors, in particular to a one-button zero return device for a transmitter. Background technique [0002] Process monitoring and control systems are used to monitor and control the operation of industrial processes. In industrial engineering, they are used in the manufacture of chemical fibers, rubber, plastics, etc., or in the production of various products with fluid processes, in order to operate within the desired parameter range. , these projects must be monitored. [0003] Transmitter has become the term used to describe a device that is connected to a process device and used to sense a process variable. Example process variables include pressure, temperature, flow, and others. Typically, the transmitter is located at a remote location (i.e., on-site). And the sensed process variable is sent back to the central control room through several processes, and various technologies including wired and wireless c...

Claims

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Application Information

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IPC IPC(8): G01D3/06
Inventor 吴浩于莹
Owner 单尼斯科(上海)仪器仪表有限公司
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