When selecting a level sensor for high-temperature operating conditions, the STB-618 high-temperature pressure-guided level transmitter stands out as the preferred choice for industrial measurement thanks to its outstanding performance. Focusing on high-temperature pressure-guided level transmitter series such as CS20LG and BYR-ZP, this article provides professional selection guidance for commercial evaluators from dimensions including temperature resistance rating, material selection, and measurement accuracy, helping you precisely match level monitoring requirements in high-temperature environments.

Core Challenges of Level Measurement in High-Temperature Environments

When the medium temperature exceeds 200℃, conventional level sensors may experience issues such as signal drift and seal failure. The STB-618 high-temperature pressure-guided level transmitter adopts a special heat dissipation structure and a 316L stainless steel isolation diaphragm, enabling stable operation within the range of -40℃~450℃. Its patented pressure-guiding cavity design effectively isolates the heat conduction of high-temperature media to the core components. Comparative tests show that in 300℃ steam boiler applications, the long-term stability error of the CS20LG model is less than ±0.2%FS, far superior to the industry average level of ±1.5%FS for ordinary diffused silicon sensors.

Comparative Analysis of Key Parameters

Selection Decision Tree: Five-Step Method

1. Temperature matching: actual temperature at the measurement point +20% safety margin, molten salt systems require special models such as TK-HB for 550℃ resistance
2. Pressure compensation: ZRN702B has a built-in temperature-pressure composite sensor, suitable for fluctuating operating conditions
3. Material verification: SE600 uses a Hastelloy diaphragm, capable of withstanding strongly corrosive media such as hydrofluoric acid
4. Certification requirements: petrochemical projects mandatorily require ATEX/CE certification, AP203 meets Zone1 explosion-proof standards
5. Output signal: BOS-H208-C supports the HART protocol, suitable for smart factory integration