Accurate liquid level monitoring for mid-depth marine and industrial tank systems

The WEMA S3 sender is a durable and precise liquid level sensor engineered for monitoring fuel, water, and other liquids across marine, automotive, and industrial applications. Constructed 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 accurate electrical signals for consistent readings across both 12V and 24V systems. This variant features a fixed 350 mm sender length, making it suitable for mid-depth tank installations requiring reliable and accurate liquid level measurement.

Key Features

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

Designed for dependable operation and long-term durability, this sender provides accurate liquid level monitoring for marine, automotive, and industrial tank systems.

Product Specifications
Material 316 Stainless Steel
Mounting Thread 1¼" BSP
Output Type Variable Resistance
Resistance Range 240–30Ω
Operating Voltage 12V / 24V
Power Rating 10W Maximum
Length Availability 150 mm to 1000 mm
IP Rating IP65
Operating Temperature -40°C to +85°C
SKU WEM.S3-A350
Model # S3-A350
Brand Wema
Shipping Weight 0.0010kg
Shipping Height 0.050m
Shipping Length 0.360m

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