Johnson Controls Humidity Sensor

Johnson Controls Humidity Sensors: Precision Measurement for HVAC & Building Automation

When it comes to monitoring and controlling moisture levels in commercial and residential HVAC systems, Johnson Controls stands in a class of its own. With a legacy of humidity sensing innovation stretching back over a century, the brand has developed some of the most trusted humidity sensors in the building automation industry — backed by patented technology, rigorous calibration standards, and a product lineup engineered for real-world HVAC demands.

Patented All-Polymer Sensing Technology

The patented All-Polymer humidity element is capable of sensing over the entire range of 0 to 100% RH, and its construction provides resistance to corrosion in typical HVAC environments. This proprietary sensing element is the cornerstone of Johnson Controls' humidity sensor lineup, and it sets the brand apart from competitors relying on less durable sensing materials. Johnson Controls' journey to the All-Polymer element spans decades of sensing evolution, including earlier technologies such as horn, bi-wood, nylon, human hair, and CAB elements dating back to 1915.

Key Product Series

Johnson Controls offers a well-rounded family of humidity sensors to cover virtually every HVAC installation scenario:

• HE-6700 Series: The HE-6700 humidity elements provide independent humidity and temperature signals suitable for use with most HVAC controllers, offering a durable, cost-effective solution that is easy to install and factory calibrated to NIST standards. The ±2% models ship with NIST certificates of conformance to validate their use in demanding HVAC applications.
• HE-6800 Series: The HE-6800 Series Humidity Transmitter features a manual override pushbutton that allows the occupant to control space temperature and signal the controller about occupancy after hours or on weekends, with an LED standard on all models.
• Hx-67x3 Series (Outdoor): The Hx-67x3 Series offers a full line of outdoor relative humidity transmitters measuring RH levels from 0 to 100%, providing excellent reliability, long-term stability, and fast accurate response. Certain models include a temperature transmitter, and the humidity sensor is impervious to dust and most chemicals and is not damaged by condensation. A weather shield protects sensors from solar radiation and precipitation without affecting performance.
• HL-67N5 Multi-Function Humidity Device: The HL-67N5 regulates duct humidity by overriding a system controller's demand for humidification when humidity exceeds a user-defined setpoint. It features TRUERH patented circuitry and calibration, an all-plastic duct probe material that complies with UL flammability ratings for plenum use, and combines humidity and temperature sensing in one unit to reduce installation time and cost.

Why Johnson Controls Humidity Sensors Stand Out

Johnson Controls designs its HVAC sensors to work seamlessly within HVAC systems, engineering them not just for performance but also to help reduce expenses and time spent on installation. Temperature and humidity data from these elements can also be used to calculate enthalpy, which is important in determining an energy-efficient and cost-effective control strategy. Whether you're retrofitting an older system or specifying components for a new build, Johnson Controls' humidity sensors deliver the accuracy, durability, and system compatibility that building automation professionals depend on. Explore the full Johnson Controls brand catalog for the complete range of building control solutions.