MAMAC Systems TE-704-A-17 Temperature Sensor

The MAMAC Systems TE-704-A-17 is a high-performance strap-on pipe temperature sensor engineered for precise thermal monitoring in commercial HVAC systems and mechanical equipment rooms. This unit features a 20,000 Ohm NTC thermistor, which provides a stable and accurate resistance signal compatible with a wide range of building automation controllers. Designed for surface-contact measurement, the sensor is ideal for monitoring chilled water pipes, hot water lines, and refrigerant loops without the need for a thermowell.

The TE-704-A-17 includes a 2-inch 304 stainless steel probe and a 6-foot plenum-rated cable to ensure durable connectivity in demanding environments. This surface mount thermistor is rated for a wide operating range from -40°F to 210°F, maintaining high interchangeability accuracy of ±0.2°C at 77°F. Its low-profile design allows for quick installation on various pipe diameters using nylon ties or hose clamps, ensuring a secure thermal bond for responsive and reliable data acquisition in complex hydronic and air-side applications.

• High-Precision Monitoring: The 20K Ohm NTC sensor element provides stable resistance for accurate HVAC temperature control.
• Durable Construction: Features a 304 stainless steel probe that resists moisture and corrosion in mechanical rooms.
• Versatile Application: Perfect for strap-on pipe sensing on refrigerant lines and water pipes where immersion wells are impractical.
• Code Compliant: Supplied with a plenum-rated cable (1.8m/6ft) for safe installation in ceiling plenums and duct spaces.
• Fast Response: Low-mass probe design ensures rapid thermal conductivity from the pipe surface to the sensing element.

What is the best way to ensure an accurate reading with a strap-on sensor?
Technicians should clean the pipe surface of any rust or scale and apply a thin layer of thermal conductive paste (such as A-505) between the stainless steel probe and the pipe before securing it tightly with clamps.

What controllers are compatible with a 20,000 Ohm NTC thermistor?
The TE-704-A-17 is commonly used with BAS/DDC systems that support 20K NTC resistance curves, frequently found in various commercial automation platforms.

Can this sensor be used on steam lines?
While rated up to 210°F, it is specifically designed for low-pressure steam, conditioned water, and refrigerant line monitoring. Always verify that the surface temperature does not exceed the sensor's maximum operating limit.

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.