S3 Fuel and Water Sender
SKU: 126710-A
Wema S3 Fuel and Water Senders are available in a comprehensive range of lengths, spanning from 150mm to 1600mm, catering to various tank sizes and applications. These versatile senders are designed to accurately measure fuel, water, and other liquid levels in tanks.
Two standard resistance ranges are offered to accommodate different gauge systems:
- 0-190 ohm: Primarily used in European gauges
- 240-30 ohm: Commonly employed by American gauge manufacturers
It's crucial to ensure that senders and gauges have matching resistance ranges.
The Wema S3 Fuel and Water Sender demonstrates exceptional versatility, being suitable for use with oil and various other liquids. For unique or unusual applications, we recommend contacting our experts for confirmation and guidance.
Manufactured from high-quality 316 stainless steel, these robust senders have been the preferred choice of major British and European boat builders for over four decades. The Wema S3 operates on a simple yet effective principle: twin magnets in the float activate a series of reed switches securely housed and doubly insulated within the stainless steel tube.
Continuous improvements in reed switch technology have allowed for significant enhancements in sender performance. Modern Wema S3 senders now incorporate a greater number of switches, resulting in improved resolution to meet the demands of contemporary digital displays.
For applications requiring even greater precision, we offer high-resolution senders in lengths from 150mm to 400mm. These advanced models feature switches placed at approximately 10mm intervals, compared to the standard 20mm spacing, providing enhanced accuracy and clarity, especially in shallow tanks.
The reliability of S3 senders has been proven across various industries. Wema technology is widely adopted by major European truck and bus manufacturers, as well as in off-road and military vehicles, attesting to its durability and performance in demanding environments.
To accommodate specialised requirements, we offer custom options including:
- Extended sender lengths
- Alternative outputs (0-5v, 0-10v, 4-20mA)
- Bespoke solutions for unique applications
For more information on these options, please contact our team.
Beyond its primary function as a liquid level sensor, the Wema S3 Fuel and Water Sender can be adapted for use as a position sensor. This is achieved by mounting the sender to a stationary part and attaching the float to a moving component, enabling precise position measurement in various mechanical systems.
[Please note: the code 001300 refers to the S3 head]
Torque Settings for Wema S3 Fuel and Water Sender Installation
Proper installation is crucial for optimal performance and longevity of the Wema S3 sender. When mounting the sender (with o-rings in place) into a flange, adhere to these recommended torque settings:
- Steel Flange: 9 ± 1 Nm
- Nylon Flange: 7 ± 1 Nm
Following these torque specifications ensures a secure, leak-free installation while preventing damage to the sender or flange. Always use a calibrated torque wrench for precise tightening.
Wema S3 Fuel and Water Senders are available in a comprehensive range of lengths, spanning from 150mm to 1600mm, catering to various tank sizes and applications. These versatile senders are designed to accurately measure fuel, water, and other liquid levels in tanks.
Two standard resistance ranges are offered to accommodate different gauge systems:
- 0-190 ohm: Primarily used in European gauges
- 240-30 ohm: Commonly employed by American gauge manufacturers
It's crucial to ensure that senders and gauges have matching resistance ranges.
The Wema S3 Fuel and Water Sender demonstrates exceptional versatility, being suitable for use with oil and various other liquids. For unique or unusual applications, we recommend contacting our experts for confirmation and guidance.
Manufactured from high-quality 316 stainless steel, these robust senders have been the preferred choice of major British and European boat builders for over four decades. The Wema S3 operates on a simple yet effective principle: twin magnets in the float activate a series of reed switches securely housed and doubly insulated within the stainless steel tube.
Continuous improvements in reed switch technology have allowed for significant enhancements in sender performance. Modern Wema S3 senders now incorporate a greater number of switches, resulting in improved resolution to meet the demands of contemporary digital displays.
For applications requiring even greater precision, we offer high-resolution senders in lengths from 150mm to 400mm. These advanced models feature switches placed at approximately 10mm intervals, compared to the standard 20mm spacing, providing enhanced accuracy and clarity, especially in shallow tanks.
The reliability of S3 senders has been proven across various industries. Wema technology is widely adopted by major European truck and bus manufacturers, as well as in off-road and military vehicles, attesting to its durability and performance in demanding environments.
To accommodate specialised requirements, we offer custom options including:
- Extended sender lengths
- Alternative outputs (0-5v, 0-10v, 4-20mA)
- Bespoke solutions for unique applications
For more information on these options, please contact our team.
Beyond its primary function as a liquid level sensor, the Wema S3 Fuel and Water Sender can be adapted for use as a position sensor. This is achieved by mounting the sender to a stationary part and attaching the float to a moving component, enabling precise position measurement in various mechanical systems.
[Please note: the code 001300 refers to the S3 head]
Torque Settings for Wema S3 Fuel and Water Sender Installation
Proper installation is crucial for optimal performance and longevity of the Wema S3 sender. When mounting the sender (with o-rings in place) into a flange, adhere to these recommended torque settings:
- Steel Flange: 9 ± 1 Nm
- Nylon Flange: 7 ± 1 Nm
Following these torque specifications ensures a secure, leak-free installation while preventing damage to the sender or flange. Always use a calibrated torque wrench for precise tightening.