Separated heating wide-range oxygen sensor
An oxygen sensor, a separate technology, applied in the field of high-precision wide-area sensors, can solve the problems of difficult to control the consistency of sintering shrinkage, small diffusion cavities and ceramic cracks, and current easily polluted or interfered. , to enhance the overall reliability, the effect of high consistency
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[0038] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.
[0039] technical features
[0040] The novel high-precision wide-range oxygen sensor of the invention belongs to the oxygen sensor based on zirconia. Unlike most wide-area oxygen sensors, it has an external heater, no diffusion barrier flow-limiting design, and does not require a reference gas, and can be automatically tested and recalibrated in normal ambient air. The accuracy of oxygen measurement is as high as 4%, and the range of oxygen measurement is ultra-wide (l=0.1~∞). The oxygen sensor in this invention uses a zirconia ceramic substrate, referred to as a zirconium plate. The heater is made of iron chromium alloy.
[0041] Technical solutions
[0042] 2.1 Sensor design
[0043] 2.1...
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