500°C ≠ Essential demand! The primary battleground for industrial high-temperature pressure measurement lies below 300°C.
2026-08-18
In August 2026, the sensor industry received a major breakthrough. A domestic research team achieved significant progress in silicon carbide sensing, developing an all‑SiC monolithic MEMS pressure sensor that has surpassed key laboratory milestones at temperatures up to 500°C and successfully demonstrated its performance under extreme high‑temperature conditions—marking a pioneering advance in high‑temperature sensing technology.
All-SiC Monolithic Piezoresistive Pressure Sensor Structure
The core of this research breakthrough points in the same direction—silicon carbide (SiC). The quality of SiC single-crystal substrates is critical to device performance, yet it faces challenges such as high costs and significant technical barriers. Although the cost of SiC substrates has already declined, applications of materials like SiC in high‑temperature, high‑pressure sensing are only just entering the commercial validation stage—there remains a considerable distance to widespread industrial adoption.
Thus, when we shift our focus from the laboratory back to everyday factory floors, oil drilling platforms, and industrial equipment, a more pragmatic reality emerges: in over 90% of industrial high‑temperature pressure‑measurement applications, the temperature requirement is actually below 300°C.
Downhole measurements in oil and gas wells typically operate at temperatures ranging from 150°C to 200°C; drilling tools and pump‑oil systems generally handle media within a temperature range of –40°C to 250°C; and measurement conditions for power‑generation equipment such as steel‑making facilities, generators, and steam turbines likewise fall within this same temperature range. In other words, 500°C represents the technological ceiling of the industry, rather than the mainstream operating range encountered in industrial settings.
Addressing this mainstream application scenario, Songnuo Alliance Technology has leveraged its proprietary nanofilm sensing technology to deliver a solution tailored for practical engineering deployment.
The Songnuo Alliance CYB‑S900 series nano‑thin‑film, compact high‑temperature pressure sensors and the CYB‑S902 oil‑field logging pressure sensors are specifically engineered for the aforementioned industrial high‑temperature applications.
Leveraging patented novel sensing materials and internationally advanced nano‑thin‑film deposition techniques, these two products can significantly mitigate the creep, hysteresis, and aging issues inherent in conventional metal‑foil strain gauges, while also addressing the intrinsic limitations of semiconductor PN‑junction sensors—namely, substantial temperature‑induced measurement errors and a restricted operational temperature range.
In terms of medium temperature, both the CYB‑S900 and CYB‑S902 offer three selectable ranges: −40 °C to 150 °C, −40 °C to 250 °C, and −40 °C to 300 °C, precisely addressing the mainstream requirements of high‑temperature industrial applications. The combined accuracy (typical value) reaches ±0.1% FS, with full‑scale temperature drift ≤ ±0.03% FS/°C and zero‑point drift ≤ ±0.02% FS/°C. Within the wide temperature range of −40 °C to 300 °C, the sensors maintain stable output, effectively suppressing measurement drift caused by temperature variations.
Long-term reliability is another critical performance metric. Both products feature an all‑stainless‑steel, integrated design—without varnish or isolation diaphragms—offering excellent media compatibility and superior corrosion resistance. Following rigorous reliability testing, they exhibit minimal drift after 10 million pressure cycles, with long-term stability of ≤±0.1% FS/year. In applications requiring prolonged, continuous operation—such as oilfield drilling and downhole measurements—this high level of reliability delivers practical value that far outweighs laboratory‑grade specifications.
In addition, both products boast outstanding vibration and shock resistance—withstanding random vibration at 20 g (20 Hz to 2000 Hz) and shock at 100 g (11 ms)—while featuring a compact structure, small footprint, and light weight. Notably, the CYB‑S902 is specifically engineered for extreme operating conditions such as oilfield logging, enabling long‑term, reliable measurements in downhole environments exposed to temperatures as high as 200°C and pressures up to 250 MPa.
Songnuo Alliance’s market strategy is clear: to push the temperature range of –40°C to 300°C—covering the vast majority of industrial applications—to the utmost, delivering high precision, exceptional stability, rock-solid reliability, and scalable, mass‑production capabilities.
If you’re looking for a pressure sensor that can operate reliably over the long term at 150°C, 200°C, or even 300°C; if you prioritize “full‑temperature‑range accuracy” and “long‑term stability after 10 million pressure cycles” over merely chasing an extreme temperature rating of 500°C—then the Songnuomeng CYB‑S900 and CYB‑S902 are well worth your careful consideration.
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