MAMAC Systems TE-703-C-7-A-1 Temperature Sensor

The MAMAC Systems TE-703-C-7-A-1 is a professional-grade immersion temperature sensor designed for precision monitoring in chilled water, hot water, and condenser loops. This unit features a high-stability 10,000 Ohm NTC Thermistor (Type III) sensing element, ensuring accurate resistance output for building automation systems (BAS) and HVAC controllers. The sensor is housed in a rugged 18-gauge NEMA 1 galvanized steel enclosure (IP-30), providing a durable termination point for field wiring in commercial mechanical rooms.

Engineered for reliability, the TE-703-C-7-A-1 utilizes a 4-inch 304 stainless steel probe with a 1/4" O.D. and a hermetically sealed tip to prevent moisture migration and sensor drift. The inclusion of a 1/8" NPT adapter allows for seamless integration into standard thermowells, facilitating direct immersion into the media for rapid thermal response. Supporting an operating range of -40°F to 210°F (-40°C to 100°C), this HVAC pipe sensor is a staple for contractors requiring interchangeable, high-accuracy sensing for DDC systems and industrial process control without the need for constant recalibration.

• High Accuracy: The 10K Ohm Type III thermistor provides ±0.2°C interchangeability at 77°F, ensuring precise data for critical PID control loops.
• Rugged Construction: A 304 stainless steel probe combined with a galvanized steel NEMA 1 enclosure protects the internal electronics from mechanical shock and environment-driven degradation.
• Standard Compatibility: Features a universal 1/8" NPT fitting and a Type III NTC curve compatible with most major BAS controllers, including systems from Trend, Schneider Electric, and Delta Controls.
• Ease of Installation: Designed with a keyed enclosure cover that swings open for quick access to wiring terminals, significantly reducing field labor time.

What is the difference between Type II and Type III 10K thermistors?
The Type III thermistor used in the TE-703-C-7-A-1 has a slightly different resistance-to-temperature curve than Type II, specifically at higher and lower ends of the range. Always verify your controller's input requirements to ensure the resistance curve matches the 10K Type III profile.

Can this sensor be used in high-pressure steam applications?
While the stainless steel probe is highly durable, this immersion sensor is typically rated for hot/chilled water and low-pressure steam applications. Ensure the thermowell used is rated for the system's operating pressure and that thermal compound is applied to the probe tip for optimal heat transfer.

Is the probe depth adjustable?
The "A-1" configuration specifies a fixed 4-inch probe with a 1/8" NPT adapter. While some MAMAC models offer adjustable compression fittings, this specific model is designed for a fixed-depth installation into a compatible thermowell.

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.