Solar Panels
Solar Controllers
Batteries
Inverters
Mains Chargers
DC-DC Chargers
Cables/Accessories
Power Converters
Monitoring
Kits
By Application
By Brand
Blue Sea VSM 24in Petrol Ultrasonic Tank Sender
Blue Sea VSM 24in Petrol Ultrasonic Tank Sender
Non-Contact Sensing with Digital Slosh Filtering for VSM 422 (PN 1800)
Regular price
$263.57
Availability:
Special Order
View all products from Blue Sea
Guaranteed Safe and Secure Checkout
0
DESCRIPTION
Reliable Non-Contact Ultrasonic Petrol Level Sensing for VSM 422
Monitoring fuel levels accurately in a dynamic marine or mobile environment presents unique challenges. The Blue Sea Systems 1811B Ultrasonic Tank Sender provides a solid-state solution for tracking petrol levels in tanks up to 24 in (approx. 610mm) deep. By utilising advanced acoustic wave technology, this sender measures the distance to the fuel surface without making physical contact with the volatile liquid.
Traditional mechanical float switches and resistive swing-arm senders are prone to physical degradation, corrosion, and jamming over time. Because the Blue Sea ultrasonic sensor contains no moving mechanical parts, it removes the primary cause of intermittent signal loss and premature sender failure in marine fuel systems.
Engineered for Dynamic Marine Environments
Vessel movement, wave action, and vehicle vibration cause fuel to slosh continuously, which often results in erratic gauge readings on standard analogue setups. This unit incorporates intelligent digital filtering designed to smooth out transient spikes caused by liquid movement, delivering a stable and dependable fuel volume reading to your helm or control panel.
Constructed for durability, the sender features a standard 5-hole mounting pattern accompanied by a fuel-tight sealing gasket to prevent vapour escape and moisture ingress. The three-wire harness exits through a moulded, integrated strain relief, protecting the internal electronics from constant engine vibration and cable tension.
Key Features and Benefits
- Non-Contact Ultrasonic Technology: Measures fuel depth acoustically with zero submerged or moving parts, eliminating mechanical wear and tear.
- Integrated Digital Filtering: Compensates for liquid sloshing in mobile and marine tanks to prevent erratic level readings.
- Dedicated VSM 422 Calibration: Factory-calibrated specifically for seamless integration with the Blue Sea Vessel Systems Monitor VSM 422 (PN 1800).
- Petrol Specific Design: Tuned specifically for the acoustic properties and vapour environment of petrol fuel tanks up to 24 in (approx. 610mm) in depth.
- Robust Marine Construction: Includes a 5-hole flange, sealing gasket, and moulded wiring strain relief for long-term mechanical and electrical integrity.
Important Compatibility and Exclusions
To ensure reliable system integration, please verify your existing monitoring hardware before purchasing. This sender is strictly calibrated for the Blue Sea Vessel Systems Monitor VSM 422 (PN 1800) and will not function with third-party gauges, NMEA 2000 networks, or other Blue Sea monitor models. Additionally, this model (BS-1811B) is calibrated exclusively for petrol tanks and is not suitable for diesel, water, or blackwater holding tanks.
Installation and Tank Geometry Requirements
Ultrasonic sensors rely on clean acoustic reflections from the liquid surface back to the transducer. For accurate operation, the tank and mounting location must meet specific geometric criteria:
- Tank Depth and Floor: Suitable for tanks with a maximum depth of 24 in (approx. 610mm). The bottom of the tank must be flat and level, as a sloped floor will deflect the ultrasonic beam away from the sensor.
- Perpendicular Orientation: The sender must be mounted on the top of the tank, strictly perpendicular to the surface of the liquid.
- Internal Clearance: Position the mounting hole at least 4 in (approx. 102mm) away from any internal tank walls, weld seams, pickup tubes, or baffles to prevent false acoustic echoes.
- Electrical Grounding: For optimal signal integrity, connect the negative wire of the three-wire harness as directly as possible to the main negative bus bar.
Upgrade your vessel's fuel management system with solid-state reliability. Ensure your tank meets the installation criteria and pair the Blue Sea 1811B Ultrasonic Sender with your VSM 422 monitor for precise petrol level tracking on the water.
SKU: BS-1811B
SPECIFICATIONS
| Specification | Details |
|---|---|
| Product type | Ultrasonic tank sender |
| Fuel type | Petrol only |
| Compatible monitor | Vessel Systems Monitor VSM 422 PN 1800 |
| Calibration and compatibility | Senders are calibrated to the VSM 422 and will not function with other monitors |
| Sensing | Non-contacting; no mechanical moving parts |
| Digital filtering | Eliminates errors due to liquids sloshing in mobile tanks |
| Mounting clearance | At least 4 inches from a tank side or baffle |
| Tank requirements | Tank floor must not be sloped; tanks must not be deeper than 24 inches |
| Sender orientation | Mount perpendicular to the surface of the liquid |
| Negative connection | Connect as directly as possible to the main negative bus |
| SKU: | BS-1811B |
| Model #: | BS-1811B |
| MPN: | BS-1811B |
| Package weight: | 0.24 kg |
| Package length: | 0.18 m |
| Package width: | 0.12 m |
| Package height: | 0.09 m |
WARRANTY
Blue Sea Warranty Policy
Blue Sea Systems products sold by us are supplied with a warranty against defects for the warranty period shown below, subject to the product type, application and the terms of this warranty policy.
The express warranty provided by us is limited to a maximum of 5 years from the original date of purchase, unless otherwise required under Australian Consumer Law.
Blue Sea Systems may offer longer manufacturer support on some products at their discretion
Warranty Lengths by Product Range
| Blue Sea Product Range | Warranty Length | Application / Notes |
|---|---|---|
| Most Blue Sea Systems Products | 5 years | Applies to most Blue Sea Systems products found to be defective in materials or manufacture. |
| P12 Battery Chargers | 5 years | Warranty period starts from the original date of purchase. |
| P12 Remote Displays | 5 years | Warranty period starts from the original date of purchase. |
| Digital Meters | 3 years | Warranty period starts from the original date of purchase. |
| Vessel System Monitors | 3 years | Warranty period starts from the original date of purchase. |
Warranty Assessment and Remedy
If a Blue Sea Systems product is found to be defective in materials or manufacture within the applicable warranty period, we will, at our discretion, arrange a repair, replacement, store credit or refund, depending on the nature of the fault and the requirements of Australian Consumer Law.
Products may need to be returned for assessment before a warranty claim can be approved. Where required, the product must be returned with dated proof of purchase and a clear description of the fault.
Labour costs for removing, replacing, reinstalling or diagnosing a product are not covered by this express warranty unless otherwise required under Australian Consumer Law.
Making a Warranty Claim
To make a warranty claim, please contact us with your dated proof of purchase, product details and a description of the fault.
The product may need to be returned for inspection before the claim can be assessed. If the product is confirmed to be faulty and covered by this warranty, we will advise the available remedy.
What This Warranty Does Not Cover
This warranty does not cover faults or damage caused by incorrect installation, incorrect application, misuse, abuse, neglect, unauthorised modification, accidental damage, normal wear and tear, environmental damage, or failure to use the product in accordance with the manufacturer's instructions.
- Incorrect installation or wiring
- Incorrect product selection or application
- Misuse, abuse or neglect
- Physical or accidental damage
- Water ingress or environmental damage outside the product's intended use
- Unauthorised modification or repair
- Normal wear and tear
- Labour costs for removal, replacement, reinstallation or diagnosis
- Freight, travel or call-out costs unless otherwise required by law
- Products not returned for assessment when reasonably required
Manufacturer Support
Blue Sea Systems may provide additional manufacturer support on some products beyond the warranty period listed above. Where available, we may assist customers in contacting the manufacturer, but any manufacturer support beyond the express warranty period is subject to the manufacturer's own terms and continued availability.
Australian Consumer Law
This warranty is in addition to other rights and remedies available at law. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
DOCUMENTS
Loading product documents…