Water level indicators

Black water level sensors are a fundamental element for the efficient and responsible management of waste on board your boat. A well-functioning system not only prevents accidental spills, but also ensures compliance with the strict environmental regulations that protect our seas. These sensors, available in various configurations, including float-style models and those with a panel indicator, provide an accurate and reliable reading of the level inside the tank.

Choosing the most appropriate level sensor depends on several factors, including the size of the tank, the type of indication preferred, and the specific needs of the plumbing system. Float-style models are distinguished by their simplicity and reliability, offering a practical and proven solution. Sensors with a panel indicator, on the other hand, offer a more immediate and detailed display of the level, often with illuminated indicators that signal different fill levels (full, half, empty).

How to Choose the Right Black Water Level Sensor for Your Tank

* Tank Size: It is essential to verify that the length of the sensor is compatible with the height of the tank. Nautica Basile offers models with variable lengths, generally from 25 to 48 cm, to adapt to different tank sizes.
* Type of Indication: Carefully consider whether you prefer a simple float, which provides an approximate indication of the level, or a panel with a light indicator, which offers a more precise and detailed reading. Consider a black water level indicator for easy viewing.
* Materials: Even when immersed in black water, the build quality and resistance of the materials are crucial to ensuring the durability and reliability of the sensor over time. Opt for sensors made of corrosion-resistant and chemical-resistant materials. Ensure your black water level gauge is built to last.
* Ease of Installation: Consider the ease of installation of the sensor. Some models are easier to install than others. If you don't feel confident, contact a professional.

Nautica Basile's Advice

* Replace the level sensor every 5 years, or sooner if you notice malfunctions or inaccurate readings. A faulty sensor can cause incorrect readings and potential problems with the plumbing system.
* Periodically check the wiring and electrical connections to prevent false contacts and malfunctions. Damaged wiring can compromise the operation of the sensor.
* Regularly clean the sensor to remove encrustations, residues and deposits that could alter its operation and compromise its accuracy.
* Check that the float (if present) moves freely and is not blocked by debris or encrustations.

• Fast and secure shipping throughout Italy.


• Official manufacturer's warranty.


• Pre- and post-sales technical assistance.

Is the sensor compatible with my tank?

Carefully check the internal height of your tank and compare it with the dimensions of our sensors (generally from 25 to 48 cm). Also consider the space required for the movement of the float (if present). If you have any doubts, contact us with the precise measurements of your tank and we will be happy to help you choose the most suitable model.

How is the level sensor installed?

Installing a level sensor is generally simple and does not require advanced technical skills. The sensor must be firmly fixed to the top of the tank, following the manufacturer's instructions, and connected to the indicator panel (if present). Be sure to properly seal the installation hole to prevent leaks. If you don't feel confident, contact a qualified professional.

What happens if the sensor fails?

A faulty level sensor can provide incorrect readings, indicate an incorrect level, or not work at all. In this case, it is necessary to replace it with a compatible model. Before proceeding with the purchase, check the product warranty and be sure to choose a sensor with the same characteristics as the original model.

What are the differences between a float sensor and a panel sensor?

The float sensor is a simpler and cheaper solution, which indicates the level approximately through the movement of a float. The panel sensor offers a more precise and detailed reading, often with illuminated indicators that signal different fill levels (full, half, empty). The choice depends on your precision needs and your budget.

Can I use a fresh water sensor for the black water tank?

No, it is not recommended. Black water sensors are designed with materials resistant to corrosion and chemical agents present in wastewater. Using a fresh water sensor could compromise its durability and reliability.

How can I clean the level sensor?

To clean the level sensor, disconnect it from the power supply and remove it from the tank. Use a soft brush and a mild detergent to remove encrustations and residues. Rinse thoroughly with clean water and dry thoroughly before reinstalling.

Is the sensor compatible with my tank?

Carefully check the internal height of your tank and compare it with the dimensions of our sensors (generally from 25 to 48 cm). Also consider the space required for the movement of the float (if present). If you have any doubts, contact us with the precise measurements of your tank and we will be happy to help you choose the most suitable model.

How is the level sensor installed?

Installing a level sensor is generally simple and does not require advanced technical skills. The sensor must be firmly fixed to the top of the tank, following the manufacturer's instructions, and connected to the indicator panel (if present). Be sure to properly seal the installation hole to prevent leaks. If you don't feel confident, contact a qualified professional.

What happens if the sensor fails?

A faulty level sensor can provide incorrect readings, indicate an incorrect level, or not work at all. In this case, it is necessary to replace it with a compatible model. Before proceeding with the purchase, check the product warranty and be sure to choose a sensor with the same characteristics as the original model.

What are the differences between a float sensor and a panel sensor?

The float sensor is a simpler and cheaper solution, which indicates the level approximately through the movement of a float. The panel sensor offers a more precise and detailed reading, often with illuminated indicators that signal different fill levels (full, half, empty). The choice depends on your precision needs and your budget.

Can I use a fresh water sensor for the black water tank?

No, it is not recommended. Black water sensors are designed with materials resistant to corrosion and chemical agents present in wastewater. Using a fresh water sensor could compromise its durability and reliability.

How can I clean the level sensor?

To clean the level sensor, disconnect it from the power supply and remove it from the tank. Use a soft brush and a mild detergent to remove encrustations and residues. Rinse thoroughly with clean water and dry thoroughly before reinstalling.