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Designed for side-mounting, this liquid level sensor ensures a leak-proof fit with its hermetically sealed stem. Its doughnut-shaped float follows the liquid level and magnetically triggers a reed switch, delivering a precise electrical signal for reliable, real-time monitoring in tanks and reservoirs.
Standard Model | Float Arm Length (mm) | Voltage | Switch Type | Default Configuration & Primary Application |
BF2-030-LA | 30 | Low | NO (A) | Standard part: PP Float & Housing, M8 Thread. Shallow Side Tanks: Compact condensate pans, small machinery oil sumps. |
BF2-045-LA | 45 | Low | NO (A) | Standard part: PP Float & Housing, M8 Thread. General Purpose Side-Mount: Automotive coolant tanks, residential HVAC units. |
BF2-060-LA | 60 | Low | NO (A) | Standard part: PP Float, PA Housing, M12 Thread. Medium Reach: Standard industrial side ports, pump protection tanks. |
BF2-080-LB | 80 | Low | NC (B) | Standard part: NBR Float, PA Housing, M12 Thread. Low-Level Alarm (Side): Ideal for fuel day tanks, lubricant reservoirs requiring low-level cutoff. |
BF2-100-LA | 100 | Low | NO (A) | Standard part: PA Float & Housing, M12 Thread. Deep Tank Side Access: For taller tanks with side-mounted connections. |
BF2-045-HA | 45 | High | NO (A) | Standard part: SS Float, SS Housing, M12 Thread. Compact HV Control: High voltage switching in space-constrained side-mount applications. |
BF2-080-HA | 80 | High | NO (A) | Standard part: SS Float, SS Housing, M12 Thread. Industrial HV Side-Mount: Direct control of pumps/heaters from tank side. |
BF2-120-LC | 120 | Low | SPDT (C) | Standard part: PA Float & Housing, M16 Thread. Dual-Level Side Control: Single sensor for high/low alarms in large side-mounted tanks. |
Horizontal liquid level sensors are specialized devices engineered to monitor and regulate liquid levels within tanks, pipes, vessels, or other containers. These sensors are typically side-mounted through a hermetically sealed opening on the container's wall, activating precisely when the liquid reaches a predetermined threshold. This side-entry design makes horizontal liquid level sensors highly effective in scenarios where vertical space is restricted or top/bottom access is impractical. They deliver dependable point-level detection for high or low alarms and are widely employed across industries including water treatment, chemical processing, HVAC systems, marine environments, and more.
The defining feature of horizontal liquid level sensors is their side-mounted installation, which positions them directly on the container's sidewall. This approach is ideal when overhead clearance is limited, when the sensor must detect levels from the side rather than vertically, or in compact setups where top or bottom ports are unavailable or undesirable. The hermetic seal ensures a watertight, reliable connection, preventing leaks while allowing electrical signals to pass safely to external controls.
Horizontal liquid level sensors are constructed from robust, corrosion-resistant materials to withstand demanding conditions. Common options include stainless steel for high durability in aggressive chemicals or high-temperature environments, polypropylene (PP) for cost-effective use with water and milder fluids, and other plastics or alloys tailored to specific media. These material choices enhance longevity, chemical compatibility, and overall reliability in harsh industrial, marine, or outdoor settings.
Horizontal liquid level sensors primarily include float-based designs, with the most common being horizontal liquid level switches (also known as horizontal float switches) and reed switch variants. In a typical horizontal liquid level switch, a buoyant float is attached to a pivoting arm or counterbalanced mechanism that tilts or moves as the liquid level changes, actuating an internal switch—often a hermetically sealed reed switch—via magnetic interaction. This provides a simple, reliable on/off signal without direct electrical contact with the fluid. Some models feature stainless steel construction for elevated pressure and temperature tolerance, while others use compact, side-entry floats suitable for confined spaces. These types excel in point-level applications and can be configured for normally open or normally closed operation. A horizontal level sensor in these configurations offers versatility for both general liquids and specialized needs.
Horizontal liquid level sensors are versatile and find extensive use in various sectors. In marine applications, they effectively monitor bilge and ballast water levels in tight, space-constrained compartments. For flood prevention, they detect rising water in areas with limited vertical clearance, triggering timely alerts or pumps. In agriculture, they manage water levels in livestock tanks or irrigation systems where side-mounting offers the most practical installation—frequently using a horizontal water level sensor for clean water compatibility. Chemical processing relies on them for safe, accurate monitoring in sealed or restricted-access tanks handling corrosive substances. They also support inventory control by delivering reliable full/empty signals in narrow or vertically limited containers, as well as in HVAC, sump pumps, wastewater systems, and general industrial fluid management where side access simplifies integration and maintenance.
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