Core Challenges of High-Temperature Liquid Level Measurement in the Chemical Industry

In chemical production processes，high-temperature liquid level measurement has always been a major industry pain point。Core equipment such as reaction kettles and distillation towers often operate under extreme conditions above 300℃，where traditional liquid level sensors are prone to signal drift，seal failure，and other issues。The HQ183 high-temperature pressure-guided level transmitter developed by Xi'an Shenghongchuang Instrumentation Co.，Ltd. adopts a special stainless steel cable-cylinder structure。Through pressure-guiding isolation technology，the high-temperature medium is physically isolated from sensitive components，and tests show that it can still maintain a measurement accuracy of ±0.25%FS in a 450℃ environment，far exceeding the requirements of the ASME B40.7 standard。

In-Depth Analysis of Product Technical Performance

As a high-end upgraded model of the CYB-33 series，the HQ183 features multiple breakthrough designs：1) an integrally formed 316L stainless steel measuring cylinder，with a pressure resistance rating of up to 25MPa；2) a built-in temperature compensation algorithm that automatically corrects thermal expansion errors within the -20~450℃ range；3) remote diagnostics via the HART protocol，supporting seamless integration with DCS systems。Compared with similar products such as ZNZPTB605，its response speed is improved by 40%，and its average service life in strong acid and strong alkali media exceeds 5 years。The table below shows a comparison of key parameters：

Successful Application Case in the Chlor-Alkali Chemical Industry

In the electrolysis process of a large chlor-alkali enterprise，the original LY-BP500 sensor required monthly shutdowns for maintenance due to corrosion from high-temperature brine。After replacing it with the HQ183，the following results were achieved：1) continuous fault-free operation for 18 months；2) liquid level control fluctuation reduced from ±5% to ±1.2%；3) annual maintenance costs reduced by 370，000 yuan。Its cable-cylinder design is particularly suitable for retrofit projects of older models such as JKU901，with no need to modify the existing process pipelines during installation。

Professional Recommendations for Selection and Maintenance

For different medium characteristics，it is recommended that：1) for highly corrosive working conditions，choose the CW801G with a Hastelloy diaphragm；2) for viscous media，give priority to the enlarged flange connection of the DN-24 model；3) for vibration scenarios，install the dedicated HMBUS504 anti-vibration bracket。For routine maintenance，note the following：check the compression of cable seals monthly，calibrate zero-point drift quarterly。These operations can be completed through the panel buttons，significantly reducing labor costs。

Why Choose Shenghongchuang Instrumentation

As a national high-tech enterprise，we have：1) a 2000㎡ R&D center in Xixian New Area；2) 12 patents related to liquid level measurement；3) dual certification systems of ISO9001/TS16949。All products undergo 72-hour aging tests before leaving the factory，and come with an extra-long 3-year warranty。Call 029-8456XXXX now to obtain an exclusive technical solution for HQ183，or visit the official website to view the full range of high-temperature liquid level solutions such as CYB-35。