{"product_id":"blue-sea-32in-diesel-water-waste-ultrasonic-tank-sender-for-vsm-422","title":"Blue Sea 32in Diesel\/Water\/Waste Ultrasonic Tank Sender for VSM 422","description":"\u003ch2\u003eReliable Non-Contact Tank Monitoring for the Blue Sea VSM 422\u003c\/h2\u003e\u003cp\u003eManaging fluid levels accurately in mobile and marine environments is critical for preventing unexpected fuel shortages, water depletion, or waste tank overflows. The \u003cstrong\u003eBlue Sea Systems 1810B Ultrasonic Tank Sender\u003c\/strong\u003e provides a solid-state, non-contact solution specifically engineered for integration with the \u003cstrong\u003eVessel Systems Monitor VSM 422 (PN 1800)\u003c\/strong\u003e. Suitable for diesel, freshwater, and black or grey waste holding tanks up to 32in (approx. 813mm) deep, this sensor delivers consistent and precise telemetry for demanding marine and off-grid applications.\u003c\/p\u003e\u003ch3\u003eWhy Choose Ultrasonic Over Mechanical Senders?\u003c\/h3\u003e\u003cp\u003eTraditional mechanical float switches and reed-style tank senders rely on moving parts submerged directly inside the fluid. Over time, these mechanical components are prone to seizing, corrosion, and fouling—especially when exposed to solid debris in waste tanks or biological build-up in diesel fuel. This ultrasonic tank level sensor eliminates these common points of failure entirely.\u003c\/p\u003e\u003cp\u003eBy utilising acoustic waves from the top of the tank via its ultrasonic sensing tube, the unit operates without any moving parts coming into contact with the liquid. This significantly reduces maintenance requirements and avoids the intermittent or lost signals commonly associated with mechanical degradation.\u003c\/p\u003e\u003ch3\u003eEngineered for Mobile and Marine Conditions\u003c\/h3\u003e\u003cp\u003eOne of the biggest challenges in marine vessels, caravans, and RVs is obtaining an accurate fluid reading while in motion. Vessel pitch, roll, and vehicle movement cause liquids to slosh, resulting in erratic gauge fluctuations on standard monitors. The BS-1810B incorporates advanced digital filtering that actively processes and smooths out errors caused by liquid movement, ensuring stable and dependable tank-level readings on your VSM 422 display even in rough seas or on uneven terrain.\u003c\/p\u003e\u003ch3\u003eKey Features \u0026amp; Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNon-Contact Ultrasonic Sensing:\u003c\/strong\u003e Eliminates mechanical moving parts that can wear out, stick, or corrode, making it ideal for harsh waste and diesel environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Digital Filtering:\u003c\/strong\u003e Actively compensates for liquid sloshing in mobile tanks to provide steady, reliable level readouts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank-Specific Calibration:\u003c\/strong\u003e Can be precisely calibrated for the specific geometry and depth of each individual tank up to 32in (approx. 813mm).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure Installation Hardware:\u003c\/strong\u003e Features a durable mounting flange with pre-drilled holes and a colour-coded 3-wire connection for straightforward electrical integration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDedicated VSM 422 Compatibility:\u003c\/strong\u003e Purpose-built and calibrated exclusively for seamless operation with the Blue Sea Vessel Systems Monitor VSM 422 (PN 1800).\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eImportant Compatibility and Mounting Requirements\u003c\/h3\u003e\u003cp\u003eTo ensure accurate acoustic reflections and reliable telemetry, specific installation criteria must be met. \u003cstrong\u003ePlease note:\u003c\/strong\u003e This sender is factory-calibrated specifically for the Blue Sea VSM 422 (PN 1800) and \u003cem\u003ewill not function with other tank monitors or third-party gauges\u003c\/em\u003e.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Tank Depth:\u003c\/strong\u003e Suitable for tanks no deeper than 32in (approx. 813mm).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Clearance:\u003c\/strong\u003e The sender must be mounted with at least 4in (approx. 102mm) of clearance from any internal tank side wall or structural baffle to prevent acoustic interference.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank Geometry:\u003c\/strong\u003e The floor of the tank must be flat (not sloped), and the mounting flange must be installed so the sender sits strictly perpendicular to the liquid surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical Grounding:\u003c\/strong\u003e For optimal signal integrity, connect the sender's negative wire as directly as possible to the main negative bus.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eUpgrade Your Vessel Systems Monitor\u003c\/h3\u003e\u003cp\u003eEliminate the guesswork and maintenance of mechanical float switches. Equip your Blue Sea VSM 422 system with the BS-1810B Ultrasonic Tank Sender for dependable, slosh-filtered fluid monitoring across your diesel, water, and waste tanks.\u003c\/p\u003e","brand":"Blue Sea","offers":[{"title":"Default Title","offer_id":43631414247485,"sku":"BS-1810B","price":263.57,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0602\/3918\/3933\/files\/blue-sea-ultrasonic-tank-sender-32in-bs-1810b.png?v=1792904749","url":"https:\/\/www.solar4rvs.com.au\/products\/blue-sea-32in-diesel-water-waste-ultrasonic-tank-sender-for-vsm-422","provider":"Solar 4 RVs","version":"1.0","type":"link"}