Precise liquid level sensing for compact fuel and water tank systems

The WEMA S3 sender is a compact and reliable liquid level sensor designed for accurate monitoring of fuel, water, and other liquids in marine, automotive, and industrial applications. Constructed from corrosion-resistant 316 stainless steel, it delivers dependable long-term operation in demanding environments while providing stable resistance output for compatible gauges. Utilising reed switch and float technology, it converts liquid levels into accurate electrical signals for precise readings across both 12V and 24V systems. This variant features a fixed 175 mm sender length, making it suitable for compact tanks requiring accurate and consistent level measurement.

Key Features

• 316 Stainless Steel Construction: Manufactured from marine-grade stainless steel to resist corrosion and maintain durability in harsh liquid environments.
• Reed Switch Float Technology: Uses magnet-activated reed switches to provide stable and accurate liquid level readings with minimal mechanical wear.
• 240–30 Ohm Output: Delivers consistent resistance output compatible with a wide range of marine and automotive gauges.
• 175 mm Sender Length: Configured for compact tank installations where a slightly extended sensing depth is required.
• Wide Liquid Compatibility: Suitable for monitoring fuel, diesel, petrol, water, oil, and other commonly stored liquids.
• Threaded Mounting Design: Features a 1¼" BSP threaded fitting for secure and straightforward installation.
• Low Power Operation: Passive design operates directly from the connected gauge and supports both 12V and 24V systems.
• Sealed Internal Electronics: Fully enclosed internal components help protect against liquid ingress and ensure reliable long-term performance.

Designed for dependable operation and accurate liquid monitoring, this sender provides a durable and practical solution for compact tank applications across marine and industrial environments.