Warrick 3H1B1 Sensor

The Warrick 3H1B1 is a precision-engineered 3/8-inch diameter conductivity probe designed for reliable liquid level control in open tanks and pressurized vessels. Featuring a 12-inch 316 stainless steel rod, this sensor provides superior corrosion resistance for demanding HVACR and industrial applications. The assembly utilizes a 1/2" NPT male process connection and a robust phenolic insulator, ensuring stable performance under high-temperature and high-pressure conditions. Designed for use with Warrick conductivity-based controllers, the 3H series electrode requires precise vertical installation to maintain signal integrity. This electrode is a standard choice for boiler feed controls, sump monitoring, and condensate return systems where a durable, field-proven sensor is necessary. Its rigid construction prevents bending in turbulent fluids, while the threaded rod design allows for straightforward integration into existing manifold or tank ports, providing contractors with a dependable solution for point-level sensing and low-water-cutoff protocols.

• 316 Stainless Steel Construction: High-grade metallurgy prevents oxidation and scaling in aggressive water chemistries.
• High-Pressure Rating: Rated for service in environments up to 250 PSI at 406°F, making it suitable for steam applications.
• Secure Insulation: The phenolic housing prevents electrical tracking and false triggers caused by moisture or steam.
• Compact Profile: The 3/8" rod diameter allows for installation in tight clearances without compromising structural rigidity.

Can the Warrick 3H1B1 rod be trimmed in the field?
Yes, the 12-inch stainless steel rod can be cut to the required length for your specific tank depth or set point without affecting the sensor's conductivity profile.

What controllers are compatible with this 3/8" sensor?
The 3H1B1 is compatible with all Warrick Series 16, 26, and 1960 conductivity relays, as well as most liquid level control boards that utilize a low-voltage AC sensing signal.

Is this sensor suitable for deionized water?
While the 316SS rod is highly resistant, conductivity-based sensors require a minimum fluid conductivity (typically 1 micromho/cm or higher) to function; they are not recommended for ultra-pure or non-conductive hydrocarbons.

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.