MAMAC Systems TE-703-D-12-A-3 Temperature Sensor

The MAMAC Systems TE-703-D-12-A-3 is a professional-grade immersion temperature sensor specifically engineered for hydronic HVAC applications and industrial process monitoring. Featuring a high-precision 10,000 Ohm NTC Type II thermistor, this unit maintains an accuracy of ±0.36°F (±0.2°C) to ensure tight control loops in building automation systems. The hardware consists of a 4-inch 304 stainless steel probe and a 1/2" NPT brass adapter, designed for direct-to-pipe installation within a thermowell to monitor chilled water, hot water, or steam condensate lines.

For field reliability, the TE-703-D-12-A-3 utilizes a rugged NEMA 4 painted steel enclosure, providing superior protection against moisture, dust, and debris in mechanical rooms. The sensor element is encapsulated with a high-grade thermal epoxy to prevent drift and ensure rapid thermal response. With an operating range of -40°F to 210°F, this 10k immersion thermistor is compatible with major BAS platforms from manufacturers like Johnson Controls, Trend, and more. For HVAC temperature sensor replacement or new construction, this model offers the durability required for chilled water system monitoring.

Key Benefits for Professional Installation

• System Compatibility: The 10K-II NTC thermistor curve is the industry standard for seamless integration with most commercial HVAC controllers.
• Durable Construction: The stainless steel immersion probe resists corrosion, while the NEMA 4 housing handles demanding environmental conditions.
• Installation Efficiency: Includes a 1/2" NPT adapter and 6-foot pigtail leads to reduce labor time during hydronic sensor wiring.
• High Precision: Tight manufacturing tolerances ensure accurate BAS temperature input without the need for extensive field calibration.

Common Technical Questions

What is the difference between Type II and Type III 10k thermistors?
While both have a resistance of 10,000 Ohms at 77°F (25°C), the 10K-2 thermistor used in the TE-703-D-12-A-3 follows a specific curve characteristic. Always verify your controller's input requirements to ensure the resistance curve matches.

Can this sensor be used in high-pressure applications?
Yes, provided it is installed in a compatible thermowell. The 4-inch probe is designed to fit standard deep-well assemblies used in hydronic heating and cooling systems.

Is the enclosure suitable for outdoor use?
The NEMA 4 enclosure provides protection against windblown dust and rain, making it suitable for sheltered outdoor installations or high-moisture mechanical rooms.

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.