Why is a thermowell essential when installing a flameproof RTD sensor into a pressurized or continuously running process line?
A thermowell allows plant teams to install, remove, calibrate, or replace an RTD sensor without ever breaking process containment, and this Flameproof RTD Sensor With Thermowell assembly is available at a transparent, factory-direct fixed price with zero middleman markup and ready stock for fast nationwide dispatch — giving maintenance teams a serviceable, shutdown-free sensing point from day one.
The assembly pairs a simplex, 3-wire PT100 element (0°C to 150°C range, Class A accuracy) with a solid SS316 barstock thermowell — machined from a single piece of stock rather than fabricated from welded components, which gives it superior pressure rating and structural integrity at the process interface compared to fabricated thermowells. The thermowell features a 1/2″ BSP (M) process connection, 1/2″ BSP (F) instrument connection, 16mm OD, 8mm ID, and a 70mm length below thread, sized to accept the matching sensor without gaps that would slow thermal response. Because the sensor slides directly into the thermowell rather than contacting the process fluid, technicians can pull it for calibration, cleaning, or replacement in minutes — without isolating, draining, or depressurizing the line, which is a major maintenance and safety advantage over direct-immersion sensors on continuously running systems. The die-cast aluminum head is IP67-rated with a threaded cap and safety chain, protecting the terminal compartment, and termination is onto a nickel-plated ceramic terminal block for long-term reliability. This assembly is manufactured by Aavad Instrument Pvt. Ltd. under ISO 9001:2015 certified manufacturing standards and is CE marked, confirming conformity with EU safety, health, and environmental protection requirements — important documentation for regulated process industries.
Key Features
• SS316 barstock thermowell for maximum pressure rating and structural strength
• Sensor removable for calibration or replacement without process shutdown
• Class A accuracy PT100 element, 0°C to 150°C range
• 1/2″ BSP process and instrument connections for straightforward integration
• IP67-rated die-cast aluminum head with threaded cap and chain
• Precision-matched sensor-to-well fit for fast thermal response
Applications
• Pressurized pipeline temperature monitoring without shutdown risk
• Chemical process lines requiring frequent sensor calibration
• Pharma and food-grade process temperature measurement
• Steam and hot water system temperature sensing
• Continuous process lines where isolation is impractical
• Retrofit projects upgrading direct-immersion sensors to serviceable thermowell assemblies
FAQs
1. Can I buy the thermowell and RTD sensor separately, or only as this assembly?
This listing is supplied as a matched RTD sensor and thermowell assembly, with the sensor precision-fitted to the thermowell for reliable thermal contact and measurement performance. If you require a standalone thermowell for an existing RTD sensor or a separate RTD sensor for an existing thermowell, contact our team to confirm the compatible part numbers, dimensions, and specifications.
2. Why choose a barstock thermowell instead of a fabricated (welded) thermowell?
A barstock thermowell is machined from a single solid piece of SS316 material, providing a robust construction with high resistance to mechanical stress and process pressure. Compared with fabricated thermowells made from welded components, barstock construction is often preferred for higher-pressure applications, demanding process conditions, and safety-critical installations, subject to the specific thermowell design and application requirements.
3. How often should the RTD sensor be pulled from the thermowell for calibration?
Calibration frequency depends on your plant’s quality procedures, process requirements, instrument criticality, and safety standards. For many process-critical temperature loops, calibration may be scheduled at intervals such as 6 to 12 months, although the appropriate interval should be established according to your plant’s calibration program. Since the RTD sensor can be removed from the thermowell without opening the process connection, calibration or replacement can generally be performed without breaking process containment.
4. Why should I buy this from Buyinstrument.shop?
Buyinstrument.shop supplies this matched RTD and thermowell assembly with transparent factory-direct pricing, ready-stock availability where applicable, and support from Aavad Instrument. Buyers also receive purchase confidence through Aavad Warranty, 100% Original Products, Secure Payments, and 100% Buyer Protection, providing a straightforward sourcing experience for industrial temperature measurement assemblies.
