The STS 111 KH-L80 is a high-performance ATEX-certified liquid flow monitoring sensor designed for industrial process systems operating in hazardous and explosive environments. Engineered for reliable flow detection in water and oil applications, this industrial flow sensor delivers accurate monitoring performance in Zone 0, Zone 1, and Zone 20 installations where operational safety and process stability are critical.
Manufactured with corrosion-resistant AISI 316 Ti stainless steel, the sensor is ideal for demanding industries such as chemical processing, oil handling systems, industrial automation, fluid management, energy facilities, and hazardous liquid transport operations. Its robust DN25/PN40 flange mounting design ensures secure installation and dependable long-term operation under high-pressure conditions.
Key Features
- Product ID: P11418
- ATEX-certified flow monitoring sensor for explosive areas
- Designed for liquid media including water and oil
- Suitable for Zone 0, Zone 1, and Zone 20 environments
- Extended operating temperature up to 120 °C
- Corrosion-proof AISI 316 Ti stainless steel housing
- DN25/PN40 flange connection according to EN 1092-1/05 A
- 80 mm immersion depth from flange edge
- High compressive strength up to 60 bar
- Fixed 2 m FEP cable for secure industrial connectivity
- Compatible with certified ATEX amplifiers with switching or analogue outputs
Applications
The STS 111 KH-L80 is widely used in hazardous liquid processing systems where accurate flow monitoring is essential for operational safety and equipment protection. It supports industrial plants handling combustible liquids, oil circulation systems, chemical dosing lines, coolant management systems, and fluid transfer pipelines.
Its ATEX approval allows installation in explosive gas and dust environments, making it suitable for refineries, petrochemical facilities, pharmaceutical production, wastewater treatment systems, marine applications, and industrial manufacturing plants.
Design & Functionality
This industrial liquid flow sensor operates using advanced thermal flow monitoring technology to detect changes in liquid movement with fast response times and stable performance. The sensor provides reliable monitoring even in challenging operating conditions involving fluctuating temperatures, pressure variations, and corrosive media.
Its stainless steel construction enhances durability and resistance against aggressive industrial liquids while maintaining hygienic and maintenance-friendly operation. The 80 mm sensor length and flange-mounted configuration allow efficient integration into industrial piping systems requiring accurate flow supervision.
The STS 111 KH-L80 is optimized for continuous industrial operation and supports process reliability by helping prevent dry running, pump damage, blocked pipelines, insufficient circulation, and unexpected system interruptions.
Total Crossed Beams
The sensor is engineered for dependable thermal detection accuracy across varying liquid flow conditions, ensuring stable monitoring performance in industrial process systems.
Beam Pitch Options
Optimized sensing geometry allows precise flow detection for both low and high liquid velocities in water and oil applications.
Intrinsic Synchronism
Integrated intrinsically safe operation enables reliable performance in explosive atmospheres while maintaining process safety and regulatory compliance.
Operational Advantages
- Improves industrial process safety
- Prevents equipment damage caused by low flow conditions
- Supports stable liquid circulation monitoring
- Reduces maintenance downtime and operational failures
- Enables reliable hazardous area flow supervision
- Enhances long-term process efficiency in explosive environments
