The K7L-AT50 liquid leakage sensor amplifier by Omron can detect a wide variety of liquids ranging from water to chemicals with low conductivity. It internally oscillates AC signals provided to the Sensing Band, protecting it from electric corrosion and ensuring safe operation.
There are four sensing ranges available, ensuring detection is suited to the application. The K7L also incorporates a noise canceller circuit that uses a 3-conductor cable, ensuring a high level of noise immunity.
Isolation between the power supply circuits and sensing circuits allows for multiple channels to be installed in the same location.

• Inter-electrode resistance detection
• AC detection method
• Noise canceller function
• Multi-channel applications
• Detection of condensation and liquid leakage at semiconductor production installations
• Sensing band with excellent chemical resistance
• Detection of liquid leakage at pipe joints for liquid chemical tanks
• Liquid leakage detection for measuring baths in CMP devices
• Detection of cleaning fluid level for plating devices
• Stable detection of liquids with impedances of up to 50 mΩ and common water

The K7L can be used in a wide range of applications, from semiconductor production installations to food-processing equipment.

This liquid leak sensor offers effective monitoring for leaks across various industrial applications. Its rapid detection of liquid presence is essential for minimising potential damage and downtime. The sensor is adaptable for different electronic and mechanical environments where prompt leak detection is required.

• High sensitivity detection ranges from 250KΩ to 50MΩ
• DIN rail mounting style enables straightforward installation and integration
• Functions in temperatures from -10°C to +55°C
• CE and UL certified for safety and compliance

• Monitors industrial machinery for liquid leaks
• Utilised in HVAC systems for early fluid detection
• Installed in manufacturing processes for immediate leak notifications
• Suitable for water treatment facilities

The sensor is designed for DIN rail mounting, ensuring quick and stable installation in existing control panels or electrical enclosures.

The wide sensitivity range allows for the detection of small leaks, providing early warnings and reducing the risk of operational disruptions.

It operates effectively within a supply voltage range of 12 to 24 V DC, making it adaptable for various applications and electrical configurations.

Liquid Leakage Sensors