MAMAC Systems TE-703-D-7-A-2 Temperature Sensor

The MAMAC Systems TE-703-D-7-A-2 is a professional-grade immersion temperature sensor designed for demanding hydronic and steam applications. Built with a 4-inch 304 stainless steel probe, this unit features a 10,000 Ohm NTC Thermistor (Type III) sensing element, providing an interchangeability accuracy of +/- 0.2°C at 77°F. The NEMA 4 / IP-65 rated 18-gauge cold-rolled steel enclosure is powder-coated and gasketed, making it an ideal HVAC temperature sensor for unconditioned mechanical rooms where moisture, oil vapor, and dust are present.

For seamless integration with building automation systems, this sensor includes a 1/4" NPT brass adapter for secure thermowell installation. The probe is hermetically sealed to prevent moisture migration, ensuring stable resistance readings across an operating temperature range of -40°F to 210°F. This specific model is a standard choice for contractors requiring a high-reliability BMS temperature sensor that provides consistent performance in chilled water, condenser water, or low-pressure steam loops.

• NEMA 4 Enclosure: Provides a weather-tight, powder-coated steel housing for maximum protection in harsh environments.
• 10K Ohm Type III Thermistor: High-precision sensor compatible with most major BAS and DDC controllers.
• Industrial-Grade Probe: Durable 304 SS 1/4" O.D. probe designed for long-term immersion.
• Easy Installation: Features a 1/4" NPT adapter for rapid mounting into standard thermowells.
• Moisture Resistance: Monolithic encapsulated cavity prevents drift caused by high humidity or condensation.

• Is this sensor compatible with my existing controller? The 10K Type III NTC thermistor is widely used in the industry; always verify the resistance-to-temperature curve matches your DDC system specifications.
• Can I mount this without a thermowell? No, immersion style sensors require a thermowell to isolate the probe from the pressurized fluid while allowing for accurate thermal transfer.
• What is the purpose of the NEMA 4 rating? It ensures the internal wiring and sensor terminals are protected from dust, rain, and water spray, which is critical for rooftop or basement mechanical installations.

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.