NTI Float Switch for Precise Liquid Level Monitoring

An uncontrolled liquid level in tanks can stop production processes or cause expensive damage - the NTI ENVIROMUX-LLS-PF float switch provides precise control and protection.

This vertically mounted liquid level sensor, made of high-quality plastic (PVDT float and PP stem), is specifically designed for reliable monitoring of liquid levels in tanks, rain barrels, or other containers. With its compact size (float diameter 19 mm, stem length 51 mm) and IP68 rating, it is fully waterproof and dustproof, making it ideal for demanding environments such as industrial facilities or server rooms. Magnets inside the float activate a hermetically sealed reed switch that responds with high reliability and repeatability whenever the liquid level rises or falls.

The sensor can be configured as either normally open or normally closed by simply removing a clip, flipping the float, and reinserting it - a straightforward adjustment for maximum flexibility. With a 40 cm (24 AWG) cable that can be extended up to 305 m using the included gel-filled connectors, it offers versatile connectivity. Compatible with ENVIROMUX systems (MICRO-TRH, MINI-LXO, 2D, 5D, 16D) and the PWR-RMT-RBT-C13 Remote Power Reboot Switch, it integrates seamlessly into networked monitoring systems.

The strength of the ENVIROMUX-LLS-PF lies in its ease of use and durable design.

Imagine, in an industrial plant, the water level in a cooling tank needs to be monitored: 

Installed at the bottom of the tank, the sensor closes the circuit when the liquid level drops and triggers an alert via the ENVIROMUX system to begin refilling. In a server room that uses a water tank for cooling, a sensor mounted at the tank’s top prevents overflow by opening the circuit when the maximum level is reached, stopping the water supply. The IP68 protection ensures reliable function even when submerged, while the electrical ratings (AC 220V/1A, DC 24V/0.5A) and maximum pressure capacity of 0.5 MPa make it suitable for a wide range of applications. The M8x1.25 threaded mount allows quick installation, and the included gel connectors enable safe cable extensions. RoHS certification and an operating temperature range of -20 to 80°C ensure it is both environmentally friendly and versatile, suitable for cold basements or hot industrial environments.

Why is the NTI float switch the ideal choice?

Because it combines precision with durability to protect tanks and equipment from overflow or dry running. Fluid-related damages cost billions annually, but this sensor prevents costly interruptions through early detection. Example: In a brewery, the sensor monitors tank levels and prevents overflow by sending an alert through the ENVIROMUX system before downtime occurs. In a data center, it safeguards cooling systems by detecting low water levels and triggering refills before outages happen.

The normal open/closed configurability allows adaptation to any requirement, while compatibility with ENVIROMUX systems enables comprehensive monitoring of liquid levels, temperature, and more. Its compact construction and low float density (0.7) ensure precise response, even to small fluid movements. Whether in small rain barrels or large industrial tanks, this sensor provides reliable protection and intuitive use.

• Flexible configuration: Easily switch between normally open and closed modes by flipping the float.
• Rugged design: IP68 certified, waterproof, and dustproof - perfect for humid or harsh environments.
• Accurate detection: Hermetically sealed reed switch ensures precise, repeatable level detection from minimal liquid movement.
• Versatile installation: Vertical mounting at the top or bottom of the tank with cable extension up to 305 m.
• System integration: Compatible with ENVIROMUX and PWR-RMT-RBT-C13 for networked monitoring setups.

Applications and Practical Examples

The NTI float switch ENVIROMUX-LLS-PF is perfect for applications requiring precise liquid-level control. It safeguards equipment, reduces operating costs, and improves system reliability. Here are some examples:

• Industrial and production facilities: For tanks containing cooling water or chemicals. Example: In a chemical plant, the sensor monitors the tank level, prevents pump dry running, and triggers refills to maintain production flow.
• Server rooms and data centers: In cooling tanks for water-level monitoring. Example: A sensor installed at the tank top stops water inflow at maximum level, preventing costly overflow near servers.
• Building management: In HVAC and heating system tanks. Example: In an office building, the sensor detects low water levels, preventing system failures and maintaining operational continuity.
• Agriculture and horticulture: In rainwater storage or irrigation systems. Example: In a greenhouse, the sensor monitors water levels and triggers automatic refills, keeping plants properly irrigated.
• Laboratories and research facilities: For tanks storing chemical or biological liquids. Example: In a pharmaceutical lab, the sensor prevents overflow by stopping intake at preset limits, protecting sensitive samples.

These examples demonstrate the sensor’s accuracy and proactive protection functions. Its compatibility with ENVIROMUX systems (MICRO-TRH, MINI-LXO, 2D, 5D, 16D) and PWR-RMT-RBT-C13 allows comprehensive network monitoring. Simple installation - mount via M8x1.25 thread, connect the cable - and flexible cable extension make it ideal for various setups.

Key Advantages

• High reliability: Hermetically sealed reed switch ensures precise, repeatable operation over long-term use.
• Durable materials: IP68-rated construction using PVDT and PP ensures long-lasting performance.
• Adjustable settings: Configurable as normally open or closed for flexible use in any scenario.
• Seamless integration: Works with ENVIROMUX systems for comprehensive monitoring and supports cable extensions up to 305 m.

The NTI float switch ENVIROMUX-LLS-PF is the smart solution for precise liquid-level monitoring in all environments.

Compatible with:

• ENVIROMUX-MICRO-TRH and ENVIROMUX-MICRO-TRHP
• ENVIROMUX-MINI-LXO
• ENVIROMUX-2D, ENVIROMUX-5D, and ENVIROMUX-16D

Note: not compatible with E-1W(P).

Compatible with the following Remote Power Reboot Switches / IP-LAN Power Outlets:

• PWR-RMT-RBT-C13