MAMAC Systems TE-704-A-7 Temperature Sensor

The MAMAC Systems TE-704-A-7 is a mission-critical strap-on temperature sensor designed for precise surface contact monitoring in demanding HVACR environments. Engineered for contractors, this unit features a 10,000 Ohm NTC Thermistor (Type III) element, providing high-accuracy resistance data with a ±0.2°C interchangeability at 77°F. The 2-inch 304 stainless steel probe is hermetically sealed to withstand moisture migration, making it an ideal pipe surface temperature sensor for conditioned water lines, low-pressure steam, or refrigerant systems. With its 6-foot plenum-rated cable, it ensures simplified BMS temperature sensor integration across various building automation platforms. This HVAC thermistor eliminates the need for invasive thermowells, allowing for rapid NTC Type III sensor installation directly onto piping using the included nylon ties. Operating effectively between -40°F and 210°F, the TE-704-A-7 delivers the rugged reliability needed for industrial-grade thermal feedback and equipment room instrumentation.

• Non-Invasive Installation: Mounts directly to the pipe surface, eliminating the need to drain systems or install thermowells.
• High Compatibility: The 10K-3 thermistor curve is compatible with a wide range of industry-standard DDC and building automation systems.
• Moisture Resistance: Features a 304 SS thin-wall probe with a monolithic encapsulated cavity to prevent sensor failure in high-humidity applications.
• Plenum Rated: Includes a 6-foot 1.8m plenum-rated cable for code-compliant wiring through air handling spaces.
• Precision Accuracy: Minimal drift and high interchangeability ensure stable control loop performance over the sensor's lifecycle.

How do I ensure the most accurate reading with a strap-on sensor?
To maximize thermal transfer, scrape any rust or scale from the pipe and apply a thin layer of thermal compound before securing the probe tightly with hose clamps or ties. Insulation should be wrapped around the sensor and pipe to minimize ambient temperature interference.

Is the TE-704-A-7 interchangeable with 10K Type II systems?
No. This model uses a Type III thermistor curve. While both are 10,000 Ohms at 25°C, their resistance curves differ significantly at other temperatures. Always verify the input requirements of your controller before replacing a sensor.

Can this sensor be used on steam lines?
The TE-704-A-7 is rated for use on low-pressure steam lines up to 210°F. For high-pressure steam applications exceeding this temperature, a different sensor sub-type or a thermowell-mounted immersion sensor may be required.

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.