Multifunctional oxygen measuring control device

Abstract

The present invention provides a multifunctional oxygen measurement control device, which includes: a preamplifier circuit module, the first signal input end of the preamplifier circuit module is connected to the signal output end of the oxygen sensor, and the output of the first signal output end is amplified After the oxygen potential signal; A / D conversion module, its input end is connected to the output end of the preamplification circuit module; Central Processing Unit, its input end is connected to the output end of the A / D conversion module; and display module, which is composed of Controlled by the central processing unit to digitally display the oxygen potential signal, the preamplification circuit module also includes a second signal input terminal, the second signal input terminal is connected to the signal output terminal of the thermocouple for measuring the temperature of the high-temperature oxygen sensor, and the front The first signal input end of the amplifier circuit can be respectively connected to the normal temperature oxygen sensor and the high temperature oxygen sensor. The multi-functional oxygen measurement control device according to the present invention can simultaneously perform normal temperature oxygen measurement and high temperature oxygen measurement, thus expanding the application range of the oxygen measurement control device.

Description

technical field [0001] The invention relates to the field of oxygen measuring instruments, in particular to a control device capable of realizing oxygen measurement under different working conditions. Background technique [0002] At present, common oxygen measurement control devices on the market are divided into normal temperature oxygen measurement devices using electrochemical sensors, and high temperature oxygen measurement devices using solid electrolyte zirconia batteries. The electronic control system for oxygen measurement adopts an integrated design to complete the acquisition, conversion, calculation and output of analog signals. The existing oxygen measurement device has a single function, which usually can only meet the functions of normal temperature oxygen measurement or high temperature oxygen measurement. Conventional modular design products are also modularized on the basis of a single oxygen measurement function, mainly considering the convenience of maint...

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Problems solved by technology

[0003] In addition, when similar products in the market are applied to industrial sites, due to the large number of high-power equipment on site, the interference is more serious. Without targeted anti-interference design, operational failures caused by on-site interference are prone to occur in industrial sites. Affect the normal operation of user equipment, resulting in high maintenance costs and low production efficiency

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