Johnson Controls TE-637DP-1 Temperature Sensor

The Johnson Controls TE-637DP-1 is a professional-grade surface-mount duct temperature sensor designed for precise climate monitoring within rooftop economizer systems and AHU ductwork. This unit utilizes a high-accuracy thermistor with a negative temperature coefficient (NTC) and a reference resistance of 2.2k Ohms at 77?F (25?C). Built for industrial reliability, it features a protective membrane that shields the sensing element from dust, moisture, and debris, ensuring long-term signal stability even in high-velocity airflow environments. The TE-637DP-1 is specifically engineered for compatibility with the Johnson Controls Direct Mount Economizer (DME) Controller and other BAS hardware requiring a 2.2k Ohm input. Installation is streamlined via 1/4" male spade terminal connections and a rugged plastic enclosure that mounts directly to the duct surface with two screws. For optimal thermal tracking, this HVAC duct sensor should be mounted vertically on a flat surface, ideally eight feet downstream from heating or cooling coils to prevent stratification errors.

• High-Precision Monitoring: Delivers accurate temperature feedback with a 2.2k Ohm NTC thermistor for tight control of outdoor air intake and economizer cycles.
• Contamination Resistance: Integrated protective membrane prevents sensor fouling from particulates and insects.
• Fast Field Commissioning: Standard 1/4" spade terminals and surface-mount design reduce labor time during retrofit or new installations.
• Universal Application: Compact housing allows for versatile placement inside narrow ductwork or small rooftop units.

What is the resistance value of the TE-637DP-1 at standard room temperature?
This sensor is rated at 2,252 Ohms (2.2k) when the ambient temperature is exactly 77?F (25?C). Accuracy is maintained within ?0.9?F across the standard 32?F to 158?F operating range.

Can this sensor be used in outdoor exposed environments?
No, while the sensor is durable, the enclosure must be protected from rain, snow, and direct sunlight. It is intended for interior duct mounting or protected installation inside a rooftop unit cabinet.

What wire gauge is recommended for the terminal connections?
For most commercial applications, 18 AWG copper wire is recommended to ensure a secure fit on the spade terminals and to minimize signal resistance over long runs.

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.