Description
3-Wire PT100 RTD Sensor (Model APES-6×75) is designed for reliable industrial temperature measurement where improved accuracy over long cable runs is required. The 3-wire configuration compensates for lead-wire resistance, helping reduce measurement errors compared with conventional 2-wire RTD circuits.
This sensor features a Simplex PT100 sensing element with Class B accuracy and a temperature range of -50°C to +400°C. A fixed 1/2″ BSP male process connection provides secure installation in tanks, pipelines, reactors, motors, generators, and industrial machinery. The SS316 stainless steel sheath offers corrosion resistance and mechanical durability, while the TF/TF insulated cable ensures dependable performance in demanding industrial environments.
The sensor is suitable for connection to PLCs, DCS systems, RTD transmitters, and temperature controllers that accept PT100 3-wire inputs. Aavad also offers customized probe lengths, cable lengths, sheath diameters, and process connections to meet OEM and replacement requirements.
Key Features
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Built-in 3-Wire Resistance Compensation Utilizes a third lead wire to measure and subtract extension cable resistance, eliminating distance-induced measurement errors.
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Fixed 1/2″ BSP(M) Process Fitting Standard industrial pipe thread ensures direct, pressure-tight mounting into thermowells, pipe tees, and process vessels.
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Class B Industrial Precision (-50°C to 400°C) Dependable thermal tracking across standard process heating, refrigeration, and fluid processing equipment.
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Corrosion-Resistant SS316 Probe Sheath ($6text{mm}times 75text{mm}$) Rugged stainless steel tube provides chemical resistance and physical protection in demanding environments.
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2-Meter Teflon/Teflon Lead Cable (TF/TF) High-temperature, chemical-resistant Teflon conductor and jacket insulation guards against oils, moisture, and ambient process heat.
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Cost-Effective Middle Ground Delivers substantially higher measurement accuracy than 2-wire RTDs while remaining far more economical than complex 4-wire systems.
Applications
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Process Machinery & Fluid Systems Direct immersion temperature sensing in hydraulic power units, oil reservoirs, and cooling loops.
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Remote Tank & Reactor Monitoring Threaded tank wall mounting for chemical storage, water treatment vessels, and mixing vats.
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Electric Motors, Turbines & Generators Bearing housing and lube oil line thermal monitoring on rotating machinery subject to electrical noise.
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HVAC & Industrial Piping Networks In-line liquid temperature measurement across building management systems and thermal skids.
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OEM Machinery Integration Standardized, cost-effective replacement sensor for factory equipment requiring fixed 1/2″ BSP threaded inputs.
Datasheet
FAQs
1. What is a 3-Wire PT100 RTD Sensor?
A 3-Wire PT100 RTD Sensor is a PT100 Resistance Temperature Detector (RTD) that uses three conductors to compensate for lead-wire resistance. This wiring configuration improves temperature measurement accuracy compared with a 2-wire RTD and is widely used in industrial process control, automation, and monitoring applications.
2. Why use a 3-Wire RTD instead of a 2-Wire RTD?
A 3-wire RTD minimizes measurement errors caused by lead-wire resistance, making it ideal for longer cable runs and applications requiring greater accuracy. It provides a practical balance between performance and cost, making it one of the most commonly used RTD configurations in industrial temperature measurement systems.
3. Why choose Aavad 3-Wire PT100 RTD Sensors?
Aavad 3-Wire PT100 RTD Sensors combine accurate PT100 sensing, robust SS316 stainless steel construction, standardized BSP threaded mounting, and customizable configurations to deliver reliable temperature measurement solutions. They are suitable for chemical processing, pharmaceuticals, food & beverage, power plants, water treatment, OEM machinery, HVAC, and general industrial process applications.
