Pressure sensing elements, whether made from MEMS, diffused silicon, sputtered thin film, or ceramic thick-film materials, exhibit changes in zero output and full-scale output due to temperature variations. This phenomenon is influenced by various factors in material properties and manufacturing processes. The change in sensor output per 1°C temperature variation, expressed as a percentage of the signal’s full-scale amplitude (VT/V span/t), is known as the temperature zero coefficient. For instance, a coefficient of 0.03%/°C indicates that each degree of temperature affects accuracy by 0.03%.
Traditional methods for managing temperature drift involve sorting and grading products after manufacturing; however, these methods cannot guarantee that the temperature coefficient of an entire batch remains within acceptable limits.
SongFast Technology has introduced the industry’s first fully automated laser temperature compensation process. This innovative process includes online temperature coefficient testing and an active laser trimming system to adjust resistance. As a result, we now offer a complete range of ceramic pressure sensor cores with temperature coefficients below 0.02%/°C at the component level, effectively filling a domestic gap in the market.
Our company manufactures temperature-compensated ceramic pressure sensor cores with a temperature coefficient below 0.02%/°C across a range of -20°C to +85°C, and below 0.01%/°C in the standard range of 0-50°C. This achievement effectively realizes a "zero" temperature drift capability, significantly enhancing product performance and enabling the replacement of similar high-end imported pressure sensors, such as those from METELLUX and other brands.
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