Description
Air & Gas RTD Sensor (Model APWS-Air) is a PT100 temperature sensor specifically engineered for accurate temperature measurement in airflow, ventilation systems, gas streams, ducts, stacks, and exhaust applications. Unlike general-purpose immersion RTDs designed primarily for liquids, this sensor features a dual-diameter probe construction with a 15 mm outer sheath and an 8 mm sensing insert, helping optimize thermal response for low-density media such as air and industrial gases. Equipped with a Simplex 3-wire PT100 sensing element, a durable IP65 weatherproof die-cast aluminium terminal head, and a 300 mm stainless steel probe, it provides reliable temperature measurement for HVAC systems, industrial ventilation, combustion air, process exhaust, and environmental monitoring applications.
Designed for non-hazardous industrial environments, the APWS-Air combines dependable PT100 measurement accuracy with a robust weatherproof enclosure suitable for indoor and outdoor installations. The ¾-inch ET cable entry supports secure field wiring, while the streamlined probe design enables installation in air ducts, flue gas lines, air handling units, chimneys, ventilation systems, and industrial process equipment. Manufactured by Aavad Instrument, this air and gas RTD sensor integrates with compatible temperature transmitters, PLCs, DCS, SCADA systems, building management systems (BMS), HVAC controllers, and industrial automation platforms, making it an ideal solution for continuous air and gas temperature monitoring.
Key Features
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Specialized Double-Diameter Geometry Engineered with a 15 mm outer sheath over an 8 mm insert tip to maximize thermal transfer and speed up response times in low-density gas streams.
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Optimized for Air and Gas Processing Purpose-built exclusively for ducts, exhausts, and stacks, eliminating the slow response times common with liquid-immersion probes.
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Weatherproof IP65 Aluminum Head Rugged die-cast aluminum terminal enclosure shields electrical connections from ambient dust, heavy moisture, and outdoor weathering.
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Practical 300 mm Insertion Reach Sized perfectly to extend into the center of standard industrial air ducts and flue channels for core-stream temperature profiling.
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Precision Simplex 3-Wire Circuit Platinum element delivers reliable data while compensating for line resistance variations over typical industrial cable runs.
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Industrial ¾” Et Cable Entry Features a standard threaded conduit entry port to ensure a tight, secure, and moisture-proof environmental seal for field wiring.
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Durable Stainless Steel Construction Rugged outer body resists scaling, continuous air abrasion, and high-velocity gas friction over extended operational lifecycles.
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Universal Instrumentation Compatibility Direct-output layout easily integrates with building automation controllers, HVAC panels, industrial PLCs, and standalone transmitters.
Applications
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HVAC and Commercial Air Handling Systems High-accuracy temperature tracking inside major supply ducts, return air plenums, and large facility climate control networks.
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Gas Stack and Flue Thermal Monitoring Continuous exhaust temperature tracking inside industrial furnace flues, boiler stacks, and ventilation discharge lines.
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Industrial Drying and Curing Ovens Reliable air temperature regulation within commercial drying tunnels, textile ovens, and high-volume paint booths.
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Outdoor Environmental and Air Distribution Loops Weatherproof instrumentation for outdoor fresh air intakes, extraction lines, and perimeter climate tracking modules.
Datasheet
FAQs
1. What makes an RTD Sensor specifically designed for Air and Gas measurement?
Aavad’s Air & Gas RTD Sensor (Model APWS-Air) is specially engineered for accurate air and gas temperature measurement. It features a dual-diameter probe with a 15 mm outer sheath and an 8 mm sensing insert, optimized to provide improved thermal response in low-density media such as air and gas, unlike conventional immersion RTD sensors designed primarily for liquid temperature measurement.
2. Why does the Dual-Diameter Probe design matter for Gas Temperature Measurement?
The 8 mm sensing insert has a lower thermal mass, allowing the sensor tip to respond more quickly to temperature changes in moving air and gas streams. This design provides faster response and more accurate monitoring than a uniform-diameter probe in low-density process media.
3. What is the construction and Protection Rating of this Sensor?
This sensor is a simplex 3-wire PT100 RTD with a 300 mm SS316 stainless steel probe, a die-cast aluminum weatherproof protection head rated IP65, and a ¾” ET cable entry, making it suitable for both indoor and outdoor industrial installations.
4. Is this Sensor suitable for Hazardous Gas Stack or Flue applications?
This model is intended for non-hazardous industrial environments, including HVAC ducts, ventilation systems, process air monitoring, and general gas temperature measurement. For installations in hazardous gas areas, Aavad Instrument’s Flameproof RTD Sensors with appropriate hazardous-area certifications are the recommended solution.
5. What applications is the Air & Gas RTD Sensor best suited for?
Air & Gas RTD Sensors are widely used in HVAC systems, air handling units (AHUs), ventilation ducts, industrial drying and curing ovens, gas stacks, flue gas monitoring, environmental monitoring systems, air distribution networks, and general industrial process air temperature measurement requiring reliable and weatherproof instrumentation.
