MAMAC Systems TE-703-C-7-A-3 Temperature Sensor

The MAMAC Systems TE-703-C-7-A-3 is a rugged, immersion temperature sensor specifically engineered for high-precision monitoring in commercial HVAC, industrial process control, and refrigeration systems. This unit features a 10,000 Ohm NTC Thermistor (Type III) sensing element, providing an industry-standard resistance signal for universal compatibility with most building automation systems (BAS) and digital controllers. Built to withstand demanding mechanical rooms, it utilizes a 4-inch 304 stainless steel probe that is hermetically sealed to prevent failures from moisture migration or thermal shock.

The sensor is protected by a heavy-duty NEMA 1 galvanized steel enclosure (IP-30), ensuring durability and accessible wiring for field technicians. Installation is streamlined via a 1/2 inch NPT adapter, making it a drop-in solution for thermowell mount applications in hot/chilled water lines and condenser water loops. Delivering 0.2°C interchangeability at 77°F, this 10k Type 3 thermistor sensor ensures long-term stability and repeatable accuracy across a broad operating range of -40°F to 210°F, critical for maintaining optimal plant efficiency.

• Long-Term Stability: The hermetically sealed 304 SS probe eliminates the risk of drift caused by humidity and environmental contaminants.
• Standardized Resistance: The 10k Type III NTC thermistor integrates seamlessly with Johnson Controls, Reliable Controls, and other common BAS providers.
• Durable Construction: 18-gauge galvanized steel enclosure provides superior mechanical protection compared to plastic alternatives.
• Fast Response: Thin-wall probe design allows for rapid thermal transfer from the pipe to the sensing element for real-time data monitoring.
• Ease of Install: Includes a factory-installed 1/2" NPT adapter for quick threading into existing thermowells.

What is the difference between Type II and Type III 10k thermistors?
The MAMAC TE-703-C-7-A-3 uses a 10k Type III curve. While both have a 10,000-ohm resistance at 77°F, they have different temperature coefficients and resistance-temperature (R-T) curves; Type III is frequently specified for systems requiring specific compatibility with newer DDC controllers.

Does this sensor come with a thermowell?
This model includes the sensor probe, NEMA 1 enclosure, and 1/2" NPT adapter. While it is designed to seat into a 4-inch thermowell, the well itself must be ordered separately or be existing on-site.

Can this be used for steam applications?
It is rated for low-pressure steam and chilled/hot water applications up to 210°F. For high-pressure steam, always verify the temperature limits to ensure they do not exceed the operating range of the 304 stainless steel assembly.

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.