Description
Flameproof Sanitary RTD Sensor (Model APFS-Tri) is a versatile PT100 RTD temperature sensor engineered for accurate temperature measurement in hygienic processes located within appropriately classified hazardous industrial areas. Featuring a rugged IP67 flameproof die-cast aluminium terminal head, corrosion-resistant SS316 construction, and a hygienic 2-inch Tri-Clover (Tri-Clamp) process connection, this sanitary temperature sensor provides reliable measurement across an operating range of -50°C to +400°C. Available with 2-wire, 3-wire, or 4-wire RTD configurations and Simplex or Duplex sensing elements, the APFS-Tri offers flexible integration with temperature indicators, transmitters, PLCs, DCS, and process control systems while supporting different measurement accuracy and redundancy requirements.
Designed for food, dairy, beverage, pharmaceutical, biotech, and compatible chemical processing applications, the sensor combines hygienic process connectivity with a flameproof terminal enclosure for applications where both sanitary design and hazardous-area protection are required. The 300 mm total length below the terminal head provides extended reach for larger sanitary vessels, while the 2-inch Tri-Clamp connection supports convenient installation and removal from compatible hygienic process equipment used in CIP and SIP systems. Manufactured by Aavad Instrument, this flameproof sanitary PT100 RTD sensor provides a configurable temperature measurement solution for process vessels, tanks, reactors, mixing systems, and production equipment requiring reliable temperature monitoring in hygienic and appropriately classified hazardous environments.
Key Features
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Versatile 2, 3, or 4-Wire Configurations Configurable element architecture allows matching standard industrial inputs, loop indicators, or high-accuracy 4-wire bridge circuits.
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Simplex or Duplex Signal Options Available in single-circuit simplex or dual-circuit duplex builds to easily provide signal backup or independent safety trip loops.
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Certified Flameproof Aluminum Head Explosion-resistant die-cast aluminum enclosure designed to safely contain internal electrical arcing in classified hazardous environments.
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Hygienic 2″ Tri-Clover Process Connection Precision-machined Tri-Clamp interface guarantees quick, crevice-free installation for ultra-pure sanitary processing.
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Extended 300 mm Deep Reach Geometry Offers a longer total probe length below the head for deeper immersion inside larger tanks, storage silos, and process vessels.
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Premium Marine-Grade SS316 Body Built from rugged, corrosion-resistant stainless steel to survive aggressive chemical wash-downs and maintain batch purity.
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Extreme-Duty Thermal Operating Range Accurately tracks process temperatures across an expansive application profile spanning from -50°C to 400°C.
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Standard Single 1/2″ NPT(F) Entry Point Features an industrial female NPT conduit port to establish a leak-tight, weatherproof seal around field signal wiring.
Applications
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Classified Hazardous Zone Food and Beverage Processing Continuous temperature measurement within distillery blending vats, automated brewery loops, and dust-prone grain processing plants.
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Hygienic Pharmaceutical and Biotech Production Reliable thermal monitoring inside chemical synthesis reactors, vaccine mixing tanks, and sterile holding vessels requiring CIP/SIP cleaning.
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Explosion-Prone Chemical Utility Systems Specialized temperature profiling in classified hazardous areas where process fluids require smooth, highly sanitary contact interfaces.
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Large Sanitary Extraction and Storage Vessels Deep-immersion thermal tracking inside tall storage reservoirs, fermentation vats, and large-capacity process pipe networks.
Datasheet
FAQs
1. What is a Flameproof Sanitary RTD used for?
A Flameproof Sanitary RTD Sensor combines an explosion-proof die-cast aluminum protection head with a hygienic 2″ Tri-Clover (Tri-Clamp) process connection, enabling safe and accurate temperature measurement in hazardous gas areas while meeting sanitary process requirements. It is widely used in food processing, dairy, beverage, pharmaceutical, chemical, and other hygienic industrial applications.
2. What wiring configurations are available for this Sanitary RTD Sensor?
The PT100 sensing element is available in 2-wire, 3-wire, and 4-wire configurations, with both simplex and duplex assemblies. This provides flexibility for different industrial instrumentation systems, redundancy requirements, PLC/DCS integration, and process control applications.
3. What temperature range does the Flameproof Sanitary RTD cover?
The sensor operates over a temperature range of -50°C to +250°C. Model APFS-Tri features a 6 mm outer diameter (OD) SS316 stainless steel probe, with a 300 mm total probe length below the protection head and a 150 mm insertion length below the 2″ Tri-Clover fitting, delivering reliable temperature measurement in hygienic process applications.
4. What protection rating and Cable Entry does this Sanitary RTD offer?
The sensor is equipped with a die-cast aluminum flameproof protection head rated IP67, complete with a threaded cap and retaining chain. It features a single 1/2″ (Female) NPT cable entry and a hygienic 2″ Tri-Clover (Tri-Clamp) process connection for secure installation in hazardous and sanitary environments.
5. Where is the Flameproof Sanitary RTD typically installed?
Flameproof Sanitary RTD Sensors are widely installed in hazardous area process plants, chemical processing facilities, oil & gas industries, pharmaceutical manufacturing, food and beverage processing, dairy plants, and other hygienic applications requiring CIP/SIP-compatible Tri-Clover process connections together with explosion-proof temperature measurement.
