Reliable liquid level measurement for compact marine and industrial tank systems

The WEMA S3 sender is a durable and accurate liquid level sensor developed for monitoring fuel, water, and other liquids across marine, automotive, and industrial applications. Built from corrosion-resistant 316 stainless steel, it provides dependable long-term performance in demanding environments while delivering stable resistance output for compatible gauges. Using reed switch and float technology, it converts liquid levels into precise electrical signals for accurate readings across both 12V and 24V systems. This variant features a fixed 200 mm sender length, making it ideal for compact to mid-sized tank installations requiring consistent level measurement.

Key Features

• 316 Stainless Steel Construction: Manufactured from marine-grade stainless steel for superior corrosion resistance and long service life in harsh environments.
• Reed Switch Float Technology: Utilises magnet-activated reed switches to provide stable and accurate liquid level readings with minimal wear.
• 240–30 Ohm Output: Delivers reliable resistance output compatible with a wide range of marine and automotive gauges.
• 200 mm Sender Length: Designed for compact and shallow tank applications requiring dependable and accurate level monitoring.
• Wide Liquid Compatibility: Suitable for fuel, diesel, petrol, water, oil, and other commonly stored liquids across multiple applications.
• Threaded Mounting Design: Features a 1¼" BSP threaded fitting for secure and straightforward installation into compatible tanks.
• Low Power Operation: Passive sender design operates directly from the connected gauge and supports both 12V and 24V electrical systems.
• Sealed Internal Electronics: Fully enclosed internal components help protect against liquid exposure and ensure long-term operational stability.

Designed for accuracy, durability, and dependable performance, this sender provides practical liquid level monitoring for compact marine, automotive, and industrial tank systems.