MAMAC Systems TE-205-F-12 Temperature Sensor

The MAMAC Systems TE-205-F-12 is a professional-grade outdoor air temperature sensor engineered for high-accuracy sensing in building automation systems (BAS) and mechanical equipment rooms. This unit features a 10,000 Ohm NTC Thermistor (Type II) element, providing the stable resistance-based output necessary for precise environmental monitoring. Built to withstand demanding exterior conditions, the sensor is housed in a rugged die-cast aluminum NEMA 4 (IP65) enclosure. A key design feature is the liquid-tight cord connector, which effectively isolates the internal sensor chamber from the building envelope. This prevents air migration from the mechanical room to the sensor, ensuring that readings represent actual ambient outdoor conditions rather than internal exhaust or tempered air. The 304 stainless steel probe is hermetically sealed to protect against high humidity, thermal shock, and vibration, making it a reliable solution for long-term HVAC system performance and energy management.

Key Benefits for Technicians

• High Environmental Resistance: The NEMA 4 die-cast aluminum housing and hermetically sealed stainless steel probe ensure reliable operation in extreme weather and high-humidity environments.
• Prevention of Measurement Error: The liquid-tight cord connector eliminates "chimney effect" errors by sealing the building envelope from the 10K Type II NTC thermistor.
• Universal Controller Integration: This sensor provides a standard 10K Ohm Type II resistance output, making it compatible with a wide range of building automation controllers and HVAC systems.
• Streamlined Installation: Designed with a precision 1/2” NPT threaded hub, the TE-205-F-12 allows for fast, secure mounting in standard electrical conduits or junction boxes.

Common Questions

What is the difference between Type II and Type III 10K thermistors?
While both are 10,000 Ohm sensors, they follow different resistance-to-temperature curves. The TE-205-F-12 utilizes the widely used Type II (Curve 22) NTC element, which is the standard for many commercial automation platforms.

Does this sensor require a specific orientation when mounting?
For optimal accuracy and to prevent moisture accumulation, it is recommended to mount the unit with the sensor probe pointing downward to facilitate drainage and ensure proper ambient air circulation.

Can this sensor be used for water immersion or duct applications?
The TE-205-F series is specifically configured for outdoor air sensing with a sun shield/enclosure. For immersion or duct applications, specific probe lengths and mounting hardware (such as thermowells) from the TE-205 series should be selected.

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.