Warrick 3H3B1 Probe Rod

The Warrick 3H3B1 is a commercial-grade liquid level control probe designed for high-precision fluid monitoring in demanding industrial environments. This 12-inch 316 stainless steel probe rod is engineered with a full Teflon sheathing, providing critical dielectric insulation and superior corrosion resistance when used in boilers, hydronic systems, and chemical processing tanks. The assembly features a robust 5/8"-24 UNEF tank connection and utilizes a 1/4"-20 female thread for secure probe attachment to the electrode fitting. Built to handle extreme thermal and mechanical stress, the 3H3B1 maintains structural integrity at pressures up to 250 psig and operating temperatures reaching 406°F. This single-probe configuration is a standard for contractors requiring reliable conductivity-based sensing in high-pressure steam or volatile liquid applications where standard sensors fail. Integrating this Warrick liquid level accessory ensures long-term compatibility with Series 16, 17, and 19 induction relays.

Key Benefits for the Technician

• Corrosion Resistance: The 316 stainless steel construction combined with Teflon insulation prevents electrode bridging and protects against caustic fluids.
• High-Temperature Rating: Rated for 406°F, making it suitable for high-pressure steam boiler water level control and condensate return tanks.
• Secure Mechanical Interface: The 1/4"-20 female thread ensures a tight, vibration-resistant electrical connection between the rod and the fitting.
• Standardized Fitment: Features a 5/8"-24 UNEF mounting thread for easy installation into standard industrial tank tapping points.

Common Questions

Can the 3H3B1 probe rod be cut to a shorter length in the field?
Yes, if the application requires a shorter insertion depth, the 316 stainless steel rod can be trimmed. However, the Teflon sheathing must be carefully stripped back to ensure the tip is exposed for proper conductivity sensing.

What is the purpose of the Teflon sheathing on this specific model?
The Teflon sheathing provides electrical insulation along the length of the rod to prevent "false' trips caused by vapor, foam, or tracking against the tank wall, ensuring the signal only triggers at the exposed tip.

Is the 3H3B1 compatible with other brands of conductivity relays?
While designed for Warrick liquid level controls, this is a passive conductivity probe and is generally compatible with most 24V or 120V AC conductivity-based liquid level controllers.

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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.