Core Pain Points in Liquid Level Measurement of Highly Corrosive Media in the Chemical Industry

In chemical production processes，liquid level measurement of corrosive media such as strong acids and strong alkalis has always been a technical challenge for enterprises。Traditional metal sensors such as PT124B-224 and DS2640 commonly suffer from housing perforation and seal failure when exposed long-term to media such as 98% concentrated sulfuric acid and 40% sodium hydroxide。Research data from a large chlor-alkali enterprise shows that the average replacement cycle of ordinary 316L stainless steel sensors is only 3-6 months，resulting in annual equipment maintenance costs as high as 12-18万元。

More seriously，measurement errors caused by sensor corrosion may trigger chain reactions——a pesticide plant once experienced distortion due to corrosion of an LMK807 sensor，causing loss of control over the reactor liquid level and resulting in the scrapping of a batch of products worth 230万元。These pain points directly restrict the continuous production efficiency and production safety level of chemical enterprises。

Technical Breakthroughs of the PTS602 Ceramic Anti-corrosion Sensor

Innovative Application of Special Alumina Ceramic Materials

The PTS602 anti-corrosion submersible level transmitter uses 99.6% high-purity alumina ceramic as the core material in contact with the medium，with a Rockwell hardness of HRA88-90，far exceeding traditional metal materials。Verified by a third-party testing agency，after continuous immersion for 1000 hours in a 30% hydrochloric acid environment at 80℃，the corrosion amount of the ceramic diaphragm was only 0.002mm，far below the corrosion rate threshold specified by the ISO 8044 standard。

• Hydrofluoric acid resistance: through a special grain boundary modification process，the ceramic's tolerance concentration to hydrofluoric acid is increased to 15%
• Thermal shock stability: under rapid temperature changes from -40℃~200℃，it can withstand ≥1000 cycle tests
• Surface finish: mirror polishing with Ra≤0.2μm effectively prevents medium adhesion

Triple Sealing Protection System

Unlike the single-layer sealing structure of traditional models such as PY202，the PTS602 ceramic anti-corrosion sensor for measuring strong acid and strong alkali liquid levels adopts a patented design featuring:

1. Primary seal: nano-scale ceramic-metal hot-press composite interface
2. Secondary seal: perfluoroelastomer O-ring (with acid and alkali resistance superior to the fluoroelastomer used in CYB-52S)
3. Final seal: laser-welded stainless steel protective housing

This system has passed IP68 protection certification under the GB/T 4208-2017 standard and can operate long-term in corrosive liquids at a depth of 5 meters。

Performance Advantages Compared with Mainstream Models

The comparison shows that the PTS602 anti-corrosion submersible level transmitter comprehensively outperforms traditional models such as TS1003 and PCM264 in key indicators，making it especially suitable for extreme operating conditions such as electrolysis，pesticide synthesis，and hydrometallurgy。

Typical Application Scenarios and Customer Cases

Concentrated Sulfuric Acid Measurement in Titanium Dioxide Production

In the acidolysis process of titanium dioxide production at a listed company，the originally used PTH602 sensor needed replacement every 4 months。After switching to the PTS602 ceramic anti-corrosion level sensor，it continued operating for 28 months while still maintaining a measurement accuracy of 0.15%，saving 9.6万元 in annual maintenance costs for this item alone。

Lithium Battery Electrolyte Proportioning System

For the special corrosiveness of lithium hexafluorophosphate/carbonate ester solutions，the combination solution of the PTS602 ceramic diaphragm and fluoroelastomer seal successfully solved the common electrode corrosion problem of the LMK807 sensor，reducing the electrolyte proportioning error of a power battery enterprise from ±1.2% to ±0.3%。

Selection Guidance and Technical Service System

Xi'an Shenghongchuang Instrumentation Co., Ltd. provides customized selection services for chemical enterprises:

• Medium compatibility testing: free 72-hour immersion test with a 50ml sample provided
• Process connection customization: adaptable to flange，threaded，tri-clamp and other connection forms
• Intelligent diagnostic function: optional electrode corrosion self-diagnosis module (compliant with the IEC 61508 standard)

All PTS602 anti-corrosion submersible level transmitters come with an ultra-long 36-month warranty and on-site calibration services。

Conclusion

Amid the trend toward refined and continuous development in chemical production，the PTS602 ceramic anti-corrosion sensor for measuring strong acid and strong alkali liquid levels solves the application bottlenecks of traditional models such as CYB-52S and PY202 under extreme operating conditions through revolutionary material innovation。With a service life of more than 5 years and an accuracy level of 0.1%FS，it can reduce the comprehensive operation and maintenance cost of chemical enterprises by more than 30%。

As a national high-tech enterprise，Xi'an Shenghongchuang Instrumentation Co., Ltd. holds 12 patents related to liquid level measurement。Welcome to call 400-xxx-xxxx to obtain the "Chemical Industry Anti-corrosion Sensor Selection Manual"，or make an appointment for an engineer's on-site operating condition survey。