The first to adopt fully automatic temperature compensation process, low temperature drift ceramic p
Whether the pressure sensor element is MEMS, diffused silicon, sputtered film or ceramic thick film sensitive materials, due to the influence of various factors in the material and process, there is a temperature change, and its zero point output and full scale output change accordingly. The value of the change is converted to the signal full-scale amplitude (Vt/Vspan/t), referred to as the temperature zero coefficient, which means the change in sensor output caused by every 1°C change in temperature, for example, 0.03%/° C, represents that each degree of temperature affects the accuracy of 0.03%. The conventional traditional method is to use the method of sorting, and the method of screening after the products come out, and then grading, cannot guarantee that the temperature coefficient of the entire batch of products is within the qualified range.
Huaxinlian Technology has launched the industry’s first fully automatic laser temperature compensation process. In the product process, online temperature coefficient testing and active temperature compensation laser resistance adjustment systems are used to introduce a full range of temperature coefficients below 0.02%/° at the device level. C's ceramic pressure sensor core has filled the domestic gap.
The temperature compensation ceramic pressure sensor core produced by our company can be in the temperature range of -20°C---+85°C, and its temperature coefficient is lower than 0.02%/°C, in the normal range of 0-50°C The internal temperature is lower than 0.01%/°C, and the function of "zero" temperature drift can be basically realized, which greatly improves the product performance and replaces the same type of imported high-end pressure sensors, such as METELLUX and other brands.