Johnson Controls HE-68N2-0N00WS Humidity Transmitter

The Johnson Controls HE-68N2-0N00WS is a professional-grade wall mount humidity transmitter engineered for precision environmental monitoring in commercial HVAC systems. This unit features a high-accuracy ±2% relative humidity sensor and integrates a 1000 Ohm thin film nickel temperature sensor, making it a reliable dual-purpose solution for building automation. Designed for versatility, the transmitter operates on 24 VAC or VDC power and delivers a stable 0-10 VDC humidity output. As the HE-67N2-0N0BT replacement, it provides a seamless upgrade path for legacy installations without requiring extensive rewiring. The HE-68N2-0N00WS is built for long-term stability with minimal drift, ensuring accurate HVAC zone control and improved indoor air quality. By utilizing a 1k ohm nickel RTD, it maintains consistent thermal feedback for sophisticated building management systems (BMS). This model is a non-interactive wall sensor, lacking setpoint or override buttons to prevent unauthorized field adjustments in sensitive environments.

• Direct Retrofit Compatibility: Specifically designed to replace the discontinued HE-67N2-0N0BT series, ensuring standard mounting and wiring alignment.
• High-Precision Sensing: Utilizes a ± 2% RH tolerance and a 1k Ohm Thin Film Nickel element for industrial-grade data accuracy.
• Flexible Power Requirements: Supports 14 to 30 VDC or 20 to 30 VAC, accommodating most standard control transformer outputs.
• Rugged Enclosure: The low-profile wall mount design provides protection for internal components while maintaining a professional aesthetic.
• Simplified Integration: Output signals are compatible with a wide range of Johnson Controls and third-party controllers.

Common Questions

How do you wire the HE-68N2-0N00WS for 0-10V humidity output?
This model utilizes a standard four-terminal configuration for power and signal. Ensure you are using 24V power and verify terminal assignments against the technical datasheet to ensure the humidity voltage signal matches your controller input.

Is the HE-68N2-0N00WS compatible with older HE-6700 series installations?
Yes, this unit serves as the direct technical successor to the HE-67N2nd generation, utilizing similar footprints and the same 1000 Ohm Nickel temperature curves.

Does this humidity transmitter require field calibration?
The HE-68N2-0N00WS comes factory-calibrated for high accuracy. However, for critical laboratory or healthcare applications, NIST-traceable verification is recommended during commissioning to confirm local site performance.

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.