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Wema-System is a manufacturer of high quality, heavy duty, tank levle sending units for a variety of marine and commercial applications. The S3 series sender is an innovative solution for monitoring the level of fuel and/or water tanks in boats, trucks, coaches, caravans and recreational vehicles.

Superior to conventional float arm type senders, the Wema-System solution for monitoring fuel and/or water tank levels is presented in the S3 model tubular sender unit. With the float as the only moving external part the S3 sender is designed with longevity, durability and performance in mind. Constructed in AISI 316 stainless steel the sender is suitable for a wide range of mediums including diesel, petrol, fuel oil, potable and grey water. A threaded mounting section is an industry standard pipe fitting size and can be simply screwed into a socket fixed to the top of the tank.

The S3 sender is available in a multitude of lengths to suit tanks from 150 millimeters up to 1.5 meters in depth. Termination is via flying leads which have a sealed entry into the top of the sender for water resistance.

A range of matching Wema-System gauges is readily available for the S3 series tank sender units.

The S3E range suits our range of Wema gauges or other "European" spec gauges that work in the 0 (empty) to 180 (full) Ohm range. 

*Please note: Longer length senders are available upon request. Just contact us via email or phone with your requirements!

Item# Item Name Our Price Qty Add
2375B Wema 150mm Tank Level Sender
(Out of Stock)
2376B Wema 175mm Tank Level Sender
(Out of Stock)
2377B Wema 200mm Tank Level Sender
(Out of Stock)
2378B Wema 225mm Tank Level Sender
(Out of Stock)
2384B Wema 250mm Tank Level Sender
(Out of Stock)
2385B Wema 275mm Tank Level Sender
(Out of Stock)
2386B Wema 300mm Tank Level Sender
(Out of Stock)
2387B Wema 350mm Tank Level Sender
(Out of Stock)
Check the items you wish to purchase, then click

  •  ParameterSpecification 
     Code number S3-E150 through to S3-E1500
     Sender length 150mm through to 300mm in 25mm increments; and
     300mm through to 900mm in 50mm increments; and
     900mm through to 1500mm in 100mm increments.
     Medium Diesel, petrol, potable and grey water (not black water).   
     Operating voltage 12/24 VDC
     Output value 0 Ohms empty - 180 Ohms full linear.
     Other resistance values available to order.
     Material AISI 316 stainless steel
     Mounting thread1-1/4" BSP 
     Mounting kit Optional mounting kits available
     Operating temperature      -40 to +85C
     Termination 2 x flying leads (tinned) 290mm long (sheathed)

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Boating & RV acquires Bias Boating Stores


December 14, 2016 - For those of you who don't know Boating & RV acquired three of the Bias Boating stores back in 2014 to expand on our original store located in Capalaba, which include the Slacks Creek, Tingalpa and Townsville stores. Our brand has been growing better & stronger everyday and we have helped to serve thousands of happy customers with all of their boating, sailing, trailer & caravan needs.

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Please note: Boating & RV is a separate company that is not affiliated with any former Bias Boating operations, as such any outstanding Bias Boating orders or vouchers cannot be redeemed, returned or refunded through Boating & RV.