Description
Screw-In RTD Temperature Probe (Model APID-6×150) is a high-accuracy threaded PT100 RTD sensor designed for direct temperature measurement in industrial pipelines, tanks, vessels, and process equipment. Featuring a 1/2″ BSP threaded process connection, two independent 3-wire PT100 sensing elements (3+3 wire), Class A accuracy, and a durable 6 mm OD SS316 stainless steel sheath, this screw-in temperature sensor provides stable and repeatable measurement across a wide operating range of -50°C to +400°C. The threaded mounting provides a secure process connection for applications experiencing changing pressure conditions, while the 150 mm probe length enables direct insertion into compatible process tapping points for efficient liquid, gas, and industrial process temperature monitoring.
Engineered for continuous industrial temperature measurement and process automation, the Model APID-6×150 features compacted MgO insulation for excellent measurement stability during vibration and repeated thermal cycling, along with a rugged IP67 die-cast aluminium terminal head for protection against dust and moisture. Its duplex PT100 configuration provides two independent temperature signals from a single threaded process connection, supporting simultaneous process control, indication, data logging, alarm, or redundant temperature monitoring. Manufactured by Aavad Instrument, this screw-in RTD temperature probe can be customized with different thread types, insertion lengths, sheath materials, and configurations for chemical processing, petrochemical plants, water systems, oil and gas applications, HVAC equipment, and industrial machinery.
Key Features
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Threaded Screw-In Sealing Architecture Machined factory connection thread creates a rugged process interface that prevents leaks during intense fluctuations between vacuum and positive overpressure.
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Dual Element Duplex Construction Embeds two fully independent 3-wire Pt100 platinum sensor elements within a single probe body to achieve built-in signal redundancy from one tapping point.
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Direct Immersion 150 mm Probe Designed for immediate screw-in mounting directly into tanks, vessels, and main process lines without needing a separate standalone thermowell.
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High-Precision Class A Compliance High-purity platinum element matches tight international DIN-IEC accuracy tolerances ($pm0.15^circtext{C}$ at $0^circtext{C}$) to guarantee precision tracking over its operational span.
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Rugged IP67 Weatherproof Head Heavy-duty die-cast aluminum connection enclosure provides absolute protection against driving rain, high ambient humidity, and airborne particulate dust.
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Corrosion-Resistant SS316 Sheath Marine-grade stainless steel body with a 6 mm outer diameter delivers outstanding physical strength, corrosion resistance, and structural defense inside aggressive process fluids.
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Compacted MgO Element Shielding High-purity compacted Magnesium Oxide internal insulation locks wiring in position to prevent component failure from mechanical vibrations or thermal shocks.
Applications
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Variable and Intermittent Flow Processing Precision thermal monitoring inside liquid or gas pipelines subjected to sudden fluid pauses, start-stop cycles, and hydraulic pressure swings.
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Direct-Immersion Tank and Vessel Tracking Threaded installation into localized mixing vats, fluid storage tanks, and industrial boiler walls where space or response times rule out thermowells.
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Chemical and Petrochemical Processing Loops High-reliability measurement inside chemical transfer lines, processing systems, and distribution skids handling mildly corrosive media.
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Industrial Water, Oil, and Gas Utilities Direct temperature tracking across main water treatment infrastructure, industrial lubrication systems, and low-pressure gas distribution headers.
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HVAC and Commercial Refrigeration Systems Critical climate regulation inside large-scale industrial chilling units, climate chambers, and heavy-duty condenser loops.
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Pressure-Tight Machinery Component Sourcing Provision of a secure, thread-locking temperature sensor for heavy-duty pumps, hydraulic power units, and manufacturing machinery blocks.
Datasheet
FAQs
1. What is a Screw-In RTD Temperature Probe used for?
A Screw-In RTD Temperature Probe is a threaded PT100 Resistance Temperature Detector (RTD) designed for accurate temperature measurement in liquids and gases. Its threaded process connection provides a reliable seal under both vacuum and overpressure conditions, making it suitable for industrial process applications. Aavad’s Model APID-6×150 is a duplex, Class A PT100 RTD with an operating temperature range of -50°C to +400°C.
2. Can a Screw-In RTD Probe handle both Vacuum and High-Pressure applications?
Yes. The threaded installation design creates a secure, leak-proof process seal that performs reliably in both vacuum and high-pressure environments. This makes the sensor ideal for sealed tanks, pressurized pipelines, pressure vessels, and vacuum process equipment.
3. What are the standard construction details of Aavad’s Screw-In RTD Probe?
Aavad’s Screw-In RTD Temperature Probe features an SS316 stainless steel sheath with compacted Magnesium Oxide (MgO) insulation, a 1/2″ BSP (Male) fixed process connection, a die-cast aluminum IP67 protection head, a ¾” ET cable entry, and a 6 mm outer diameter (OD) probe with a 150 mm insertion length below the thread.
4. What thread types are available for the Screw-In RTD Temperature Probe?
Aavad Instrument manufactures Screw-In RTD Temperature Probes with a variety of BSP, NPT, and metric thread options, along with custom sheath materials, probe diameters, and insertion lengths to suit different tanks, pipelines, vessels, and OEM equipment.
5. Where is the Screw-In RTD Temperature Probe commonly used?
Screw-In RTD Temperature Probes are widely used in industrial process measurement, pipelines, storage tanks, HVAC and refrigeration systems, chemical and petrochemical plants, water treatment facilities, and oil & gas temperature monitoring applications, where secure installation and accurate temperature measurement are required.
