Johnson Controls TE-631S-1 Temperature Sensor

The Johnson Controls TE-631S-1 is a professional-grade strap-on temperature sensor engineered for non-invasive pipe surface monitoring in commercial HVAC and Building Automation Systems (BAS). Designed for high-stability performance, this 1k ohm nickel RTD sensing element provides an economical yet precise input for controllers, ensuring accurate thermal data without the need for system downtime or pipe penetration. The TE-6300 Series construction features a 3-inch stainless steel probe housed in a durable PVC conduit box, maintaining structural integrity across an expansive operating temperature range of -50°F to 220°F (-46°C to 104°C).

For optimal heat transfer, the TE-631S-1 nickel element should be mounted using the included cable ties and a thermal conductive compound. This HVAC surface sensor is specifically compatible with standard Johnson Controls equipment and other 1000-ohm nickel-based building automation sensors. Its strap-mount design is ideal for retrofit applications or systems where immersion wells are impractical, offering a sensitivity of approximately 3 ohms per degree Fahrenheit to deliver the high-resolution feedback required for modern hydronic control strategies.

• Non-Invasive Installation: Rapid strap-on mounting eliminates the need for draining lines or installing thermowells.
• High Precision: Verified 1k ohm nickel RTD provides ? 0.34?F accuracy at 70?F for critical system monitoring.
• Industrial Durability: Features a 0.25-inch stainless steel probe and moisture-resistant PVC enclosure suitable for plenum environments.
• Broad Compatibility: Seamlessly integrates with Johnson Controls TE-6300 series and and most BAS controllers via 2-wire 22 AWG leads.

What pipe sizes are compatible with this sensor?
The standard kit includes ties for pipes up to 2 inches. For larger lines up to 10 inches, utilize the TE-6300-615 accessory kit or adjustable metal pipe clamps.

How do I minimize wiring error on long runs?
For 1k ohm nickel sensors, wire resistance adds approximately 1?F of error for every 250 feet of 18 AWG wire. Keep runs short and verify total resistance does not exceed 3 ohms.

Is thermal paste required for accurate readings?
While not strictly required, applying a high-quality thermal conductive compound between the probe and the pipe surface significantly improves response time and accuracy.

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.