MAMAC Systems TE-707-B-12-C-2 Temperature Sensor

For large air handling units and complex ductwork where stratified air layers cause inaccurate spot readings, the MAMAC Systems TE-707-B-12-C-2 provides a reliable flexible averaging temperature sensor solution. This unit utilizes a 10,000 Ohm NTC Thermistor (Type II) element to deliver high-precision resistance data to your Building Automation System (BAS) or DDC controller. The 24-foot flexible armored cable is engineered to be serpentined across the duct cross-section, ensuring the output represents a true average of the airstream temperature rather than a single point. This is critical for preventing coil freeze-up and optimizing economizer logic in commercial HVAC systems. The NEMA 4X galvanized steel enclosure and plenum-rated construction make it suitable for harsh environments and return air applications, maintaining an accuracy of ±0.36°F (±0.2°C) across an operating range of -40°F to 200°F. Terminated with 22 AWG pigtails, this American-made sensor integrates seamlessly with industry-standard controllers from various manufacturers.

Key Benefits for Contractors

• Enhanced Monitoring Accuracy: The 24-foot averaging probe eliminates errors caused by thermal stratification in large supply and return air ducts.
• Rugged Environmental Protection: A NEMA 4X weatherproof enclosure protects wire terminations from moisture and airborne contaminants in industrial settings.
• Mechanical Durability: The armored metallic cable protects the thermistor string from physical damage during installation and high-velocity airflow.
• Universal Compatibility: The 10K Type II Thermistor curve is the industry standard for the majority of modern building management systems.
• Installation Versatility: Pigtail terminations and a compact galvanized housing allow for fast mounting on metal or fiberglass ductwork.

Common Questions

How should the averaging probe be mounted for best results?
To ensure an accurate average, the flexible averaging temperature sensor should be installed in a serpentine pattern across the entire duct area, supported by mounting clips to prevent sagging or vibration-induced fatigue.

Is this sensor compatible with plenum-rated requirements?
Yes, the MAMAC TE-707-B-12-C-2 is designed with materials suitable for use in plenum air spaces, meeting standard building codes for return air systems.

Can this unit be used for chilled water coil protection?
Absolutely. By providing an average temperature across the face of the coil, it detects cold spots more effectively than a single-point sensor, helping to prevent localized freezing.

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.