What should you look for in an RTD sensor that will be permanently exposed to outdoor weather conditions?
An RTD sensor built for permanent outdoor exposure needs sealed ingress protection and mechanical durability beyond what indoor-rated sensors typically require, and this Weather Proof Duplex RTD Sensor 300mm is available from Buyinstrument.shop at a transparent, factory-direct fixed price with zero middleman markup and ready stock for fast nationwide dispatch.
This 300mm sensor houses two independent 3-wire PT100 circuits (3+3 wire duplex) inside an SS316 sheath packed with compacted MgO insulation, giving outdoor installations both a -50°C to 400°C working range with Class A accuracy and built-in sensing redundancy in a single compact unit — valuable for outdoor tanks, exposed pipeline runs, and rooftop equipment where accessing the sensor for maintenance can be more logistically involved than indoor installations. The IP65-rated die-cast aluminum head is fitted with a threaded cap and safety chain that provide extra mechanical security against accidental loosening from wind, vibration, or routine outdoor handling, while the 3/4″ ET cable entry accepts standard outdoor-rated cable glands for a secure, weather-resistant cable run. The 1/2″ BSP adjustable compression fitting allows precise on-site depth setting to match varied outdoor tank and pipeline geometries. The nickel-plated ceramic terminal block resists corrosion even under prolonged humidity exposure. This sensor is manufactured by Aavad Instrument Pvt. Ltd. under ISO 9001:2015 certified manufacturing standards and is CE marked, confirming conformity with applicable EU safety, health, and environmental protection requirements.
Key Features
• IP65-rated sealed head purpose-built for outdoor exposure
• Dual 3+3 wire duplex configuration for redundant outdoor sensing
• Threaded cap and safety chain for added mechanical security
• Class A accuracy across a -50°C to 400°C range
• SS316 sheath with compacted MgO insulation for long outdoor service life
• 3/4″ ET cable entry compatible with standard outdoor cable glands
Applications
• Outdoor storage tank temperature monitoring
• Exposed pipeline temperature sensing
• Rooftop process equipment monitoring
• Ambient-exposed industrial installations
• Water treatment outdoor process monitoring
• Oil & gas outdoor field equipment sensing
FAQs
1. How is “weather proof” different from the flameproof models in your catalog?
Weatherproof in this listing refers to the sensor’s IP65-rated sealed head construction, which is designed to provide protection against environmental exposure such as dust, rain, humidity, and water jets. Flameproof RTD models, on the other hand, are designed and certified for use in specified hazardous or potentially explosive atmospheres according to their applicable certification. Weather protection and hazardous-area certification are different requirements, so the appropriate model should be selected based on your site’s actual installation conditions and safety requirements.
2. Can this sensor withstand monsoon-season rainfall and humidity?
Yes. The IP65-rated head with a threaded cap and safety chain is designed to protect the terminal compartment against dust ingress and water jets from any direction, making it suitable for many outdoor installations exposed to rainfall and high humidity. Proper installation of the cable entry and cable gland is still important to maintain the intended environmental protection.
3. Is the duplex configuration necessary for outdoor use, or is it just a bonus feature?
A duplex configuration is not strictly required for outdoor installation, but it can provide a practical maintenance advantage. Outdoor instrumentation may be more difficult to access during adverse weather or plant operation, so the built-in second PT100 circuit provides a backup measurement path that can reduce the need for immediate sensor removal or replacement if the primary circuit becomes unavailable.
