Challenges and Solutions for Liquid Level Measurement in Strong Acid and Strong Alkali Environments

In industrial sectors such as chemical processing, pharmaceuticals, and electroplating, strong acid and strong alkali environments pose severe challenges to liquid level measurement equipment. Traditional metal sensors are highly prone to chemical reactions in corrosive media, resulting in reduced measurement accuracy, shortened equipment service life, and even potential safety hazards. In response to this industry pain point, Xi'an Shenghongchuang Instrument Co., Ltd. has independently developed the PT124B-224 series anti-corrosion level transmitter, featuring innovative ceramic anti-corrosion technology to provide reliable measurement assurance for extreme working conditions.

Core Advantages of Ceramic Anti-Corrosion Technology

The PT124B-224 anti-corrosion submersible level transmitter uses special alumina ceramic as the key protective layer in contact with the medium, with its technical advantages reflected in three dimensions:

• Chemical stability: The ceramic material remains inert within the pH 0-14 range and can withstand highly corrosive media such as concentrated sulfuric acid（98%）and hydrofluoric acid（40%）
• Mechanical strength: The ceramic layer sintered at high temperature reaches Mohs hardness level 9, with compressive strength ＞800MPa, avoiding damage caused by medium scouring
• Temperature adaptability: The operating temperature range of -40℃~150℃ meets the extreme temperature requirements of most chemical processes

Comparative test data show that in hydrochloric acid environments of the same concentration, the average service life of traditional 316L stainless steel sensors is only 3 months, while the ceramic protective structure of the PTS602 anti-corrosion submersible level transmitter can operate stably for more than 5 years.

Analysis of Precision Measurement Performance

This series of products adopts the diffused silicon piezoresistive sensing principle and combines it with a patented ceramic isolation diaphragm design to achieve key performance breakthroughs:

The LMK807 anti-corrosion submersible level transmitter is specially equipped with an automatic temperature compensation function. When the ambient temperature fluctuates by ±20℃, it can still maintain a measurement error of ＜0.05%FS, far exceeding the requirements for chemical level instruments under the industry standard HG/T 21581-2012.

Deep Adaptation to Industry Application Scenarios

Chemical Production Process Control

In the chlor-alkali industry, the PTH602 anti-corrosion submersible level transmitter has been successfully applied to the continuous monitoring of 32% liquid alkali storage tanks, and its ceramic protective structure effectively resists adhesion corrosion from NaOH crystals. The device is equipped with a 4-20mA+HART output and can be directly connected to the DCS system to achieve:

1. Real-time level trend analysis
2. High and low level alarm interlock
3. Batch production metering management

Cleanliness Requirements in the Pharmaceutical Industry

In response to GMP standards in the pharmaceutical industry, the PY202 model uses FDA-certified materials, and all parts in contact with the medium comply with 3A sanitary standards. An application case in the pH adjustment tank for vaccine production shows that its sterile design prevents microbial growth, and the measurement data meet GMP audit trail requirements.

System Integration and Intelligent Upgrading

The TS1003 anti-corrosion submersible level transmitter supports the Industrial Internet of Things architecture and improves factory intelligence through the following methods:

• Wireless transmission: Optional NB-IoT/LoRa modules reduce on-site wiring
• Predictive maintenance: Built-in sensor health monitoring algorithm
• Cloud connectivity: Compatible with data protocols of mainstream industrial cloud platforms

The PCM264 model is further equipped with a self-diagnosis function, enabling real-time feedback on key parameters such as diaphragm stress status and medium crystallization conditions, providing early warning of potential faults.

The Value of Choosing a Professional Supplier

As a national high-tech enterprise, Xi'an Shenghongchuang Instrument Co., Ltd. provides each CYB-32 anti-corrosion submersible level transmitter with:

• 72-hour simulated working condition aging test
• Calibration certificate issued by a CNAS-accredited laboratory
• 3-year ultra-long warranty commitment

The company has 20 related patented technologies. Its products have passed multiple international standards, including SIL2 functional safety certification and IP68 protection rating certification, and it continues to provide customized solutions for leading enterprises such as CNOOC and Wanhua Chemical.

Conclusion and Recommended Actions

In the field of strong corrosive media measurement, the PT124B-224 series is redefining industry standards with its innovative ceramic protection technology and stable measurement performance. Whether for concentrated acid storage tanks in chemical production, clean process requirements in pharmaceuticals, or IoT needs in smart factories, this series of transmitters can provide accurate and reliable liquid level data support.

Contact the Xi'an Shenghongchuang technical team now to obtain an anti-corrosion liquid level measurement solution tailored to your specific working conditions. Professional engineers will recommend the optimal model（such as PTS602/DS2640/LMK807）based on factors such as medium characteristics and installation environment, and provide on-site commissioning support to ensure the long-term stable operation of the measurement system.