Flameproof RTD sensors with ceramic protection tubes are designed for temperature measurement in hazardous environments. They are made flameproof and explosion proof via a robust die cast aluminum head and mineral insulation. Optional heads include cast-iron, SS304 and SS316. The standard head for Flameproof RTD sensors is certified flameproof for gas groups I, IIA and IIB. An assembly certified for gas group IIC (Hydrogen) can also be constructed. RHF200 RTD sensors measure temperature between -50 and 250 °C. The RTD element is terminated in nickel-plated brass terminals mounted on a high-purity steatite terminal block. The block is mounted on a spring loaded stainless steel disc to protect the ceramic from impact and vibration damage as well as ensure proper contact inside the protective well. Flameproof RTD sensors are generally constructed with single cable entry and single compression cable glands however, dual cable entry and double compression cable glands are also optionally available. Other options include connecting cables and thermowells.
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