Dwyer Instruments WD3-LP-D2 Detector

The Dwyer Instruments WD3-LP-D2 is a reliable, line-powered water leak detector designed for industrial and commercial HVACR applications. This model is engineered for critical leak detection where immediate mechanical action is required without the distraction of a local siren. Operating on a versatile 11 to 27 Vac/DC power supply, the WD3-LP-D2 utilizes a robust DPDT relay to provide dual output signals, allowing you to simultaneously shut down equipment and trigger a remote building automation system (BAS) notification. The sensing probes are integrated into the bottom of the housing, and the unit includes an adjustable mounting bracket for precise height positioning on uneven surfaces or in drip pans. Built for durability, this conductive liquid sensor ensures high reliability in humid environments, making it a standard choice for protecting server rooms, mechanical closets, and hydronic heating systems from catastrophic water damage.

Key Application Benefits

• Dual Relay Outputs: The DPDT contact configuration allows for independent control over local shut-off valves and remote alarm monitoring.
• Versatile Power Compatibility: Fits standard 24V control circuits with an 11 to 27 Vac/DC input range.
• No Audible Alarm: Ideal for noise-sensitive environments where silent monitoring and automated intervention are preferred.
• Industrial Build: Features a rugged design with an adjustable mounting bracket to prevent false triggers while ensuring rapid detection.
• Low Maintenance: Solid-state conductive sensing technology provides long-term stability without the failure points found in float-style switches.

Common Contractor Questions

Can the WD3-LP-D2 be used in outdoor condensate pans?
This unit is designed for indoor applications where water leak detection is critical. While the housing is durable, it should be protected from direct weather exposure to maintain relay integrity.

How do I adjust the sensitivity or height of the sensor?
The included adjustable mounting bracket allows you to raise or lower the entire unit, ensuring the probes only make contact with water when the level reaches your specified threshold.

Does this unit require a separate controller?
No, the WD3-LP-D2 is a self-contained line powered leak detector. The internal relays are triggered directly by the sensing probes when liquid bridges the gap between them.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.