Blue Sea Systems VSM 422 Ultrasonic Tank Sender, For Diesel, Water and Waste Tanks, 32 in Tank Depth

Overview

The Blue Sea Systems 1810 is an ultrasonic tank sender for diesel, water, and waste tanks used with the Vessel Systems Monitor VSM 422. It reads tank level without internal moving parts in the sensing path, and it can be calibrated to each tank so the monitor shows a level that is more useful on board than a generic sender reading.

For fit, the tank must be no deeper than 32 in. (812 mm), the sender needs to sit at least 4 in. from a tank side or baffle, and it must be mounted perpendicular to the liquid surface. The sensing area also needs a flat section of tank floor under the sender, so it is not the right choice for tanks with a sloped bottom at the mounting point.

Key features

• Built for diesel, water, and waste tank level monitoring on a VSM 422 system

• Ultrasonic, non-contact sensing with no mechanical float or arm inside the tank

• Tank-by-tank calibration to match the actual shape of the tank

• Digital filtering helps steady the reading when liquid moves in chop or underway

• Supports tanks up to 32 in. deep when the mounting conditions are met

Compatibility and fit

This sender is not a universal replacement for standard resistive tank gauges. It is calibrated for the Blue Sea VSM 422 platform, so it makes the most sense on boats that already use that monitor for system data at the helm or electrical panel.

It is intended for diesel, water, and waste tanks. Boats with gasoline tanks need the separate gasoline-specific sender. Before ordering, check that the top of the tank has enough room for the sender body and that the mounting spot is clear of nearby tank walls and internal baffles.

Installation and setup

The sender needs to be installed square to the liquid surface, with the negative connected as directly as practical to the main negative bus. Those details matter because the sensor is reading through the tank from a fixed point, not through a moving float arm.

This style of sender works well on cruising boats, sportfishing boats, and workboats that want tank information on one monitor instead of separate level gauges, especially for diesel day tanks, freshwater tanks, and holding tanks that meet the depth and mounting requirements.

Orders are processed within 2 business days, which includes verification, packing, and dispatch. Orders of $100 or more qualify for free shipping when eligible. For orders under $100, shipping costs are calculated at checkout based on destination, package weight, and selected service. International shipping is available for eligible products, and certain items may require additional handling, warehouse transfers, or may ship directly from the manufacturer, which can affect processing time.

Deliveries are handled by preferred carriers such as USPS, UPS, FedEx, DHL, and others depending on your location and selected service. Estimated delivery times are displayed at checkout and may vary due to customs processing, carrier delays, weather, postal disruptions, or other circumstances beyond our control. Once your order ships, you'll receive a confirmation email with tracking information. Tracking may take up to 24 hours to update on the carrier's website and is also available through your account when applicable.

We ship throughout the United States and to most international destinations for products eligible for international shipping. International orders may be subject to customs duties, taxes, brokerage charges, or other import fees, which are the customer's responsibility and are not included in the product or shipping price. PO Boxes are accepted only when shipping through USPS, and not all packages qualify for this option. If your order does not arrive within the estimated delivery window, please contact us at info@apollolighting.com or +1 (954) 375-0100 so we can assist with locating your package.

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Returns may be requested within 30 days of receiving your order. Items must be unused, uninstalled, unaltered, and returned in their original packaging with all tags, packing materials, blank warranty cards, manuals, instructions, accessories, and included items. Certain products, including installed or used electronics, electrical components, lighting, consumables, custom or special-order items, cut-to-length products, safety equipment, and merchandise exposed to water or marine conditions, may not be eligible for return.

To request a return, sign in to your account and select the applicable order and items, and submit your request for review. Eligible unfulfilled items may also be submitted for cancellation within 1 hour of placing the order. Returns or cancellations are not considered approved until you receive confirmation from Apollo Lighting. Please do not ship or drop off merchandise before receiving return approval and instructions.

Customers are responsible for arranging and paying for return shipping unless the return is due to an error by Apollo Lighting or the item is verified as defective, damaged, or incorrect. Missing, damaged, defective, or incorrect items must be reported within 2 business days of delivery, and photos or other documentation may be required for review. If the issue is verified, Apollo Lighting may provide or reimburse return shipping and issue a replacement or refund depending on the circumstances. International customers are responsible for return shipping, duties, taxes, customs charges, brokerage fees, and other costs associated with an international return.

After your return is received and inspected, approved refunds are issued to the original payment method and may take 5-7 business days to appear after processing. Original shipping and handling charges are nonrefundable, and the value of any included free items that are not returned may be deducted from the refund. Apollo Lighting does not charge a standard restocking fee on eligible returns. Returns that are incomplete, damaged, installed, used, altered, improperly packaged, or otherwise do not meet the eligibility requirements may be refused. We recommend using a trackable and appropriately insured shipping service for all customer-arranged returns.

For assistance, contact info@apollolighting.com or call +1 (954) 375-0100.

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Many products sold by Apollo Lighting include a manufacturer's warranty covering defects in materials or workmanship. Warranty terms vary by brand, product category, and model, so eligibility, coverage duration, exclusions, and available remedies are determined by the applicable manufacturer. We recommend reviewing the warranty information provided with your product before installation or use, especially for marine electronics, navigation equipment, lighting, electrical systems, pumps, safety equipment, and other specialized marine products.

If you need warranty service, the claim must follow the process established by the manufacturer, authorized service center, or designated warranty provider. You may be asked for proof of purchase, a serial number, product registration, photos, maintenance or installation records, or other documentation. Apollo Lighting does not determine or modify a manufacturer's warranty coverage or final claim decision, but we are happy to help provide purchase information and direct you to the appropriate manufacturer or warranty resource.

Keep your receipt, product documentation, serial number information, and original packaging when practical. Damage caused by normal wear, misuse, improper installation, insufficient maintenance, corrosion, impact, unauthorized modifications, electrical issues, or operation outside the manufacturer's specifications may not be covered. Warranty claims are separate from standard returns, so a product that has been installed, used, or exposed to marine conditions may no longer qualify for return while still remaining eligible for evaluation under the manufacturer's applicable warranty.

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