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Standard Mineral Insulated RTD Assembly with Terminal Head

RHW500 / RHW501 / RHW502 / RHW503 / RHW505 / RHW506 / RHW508 / RHW509

Mineral Insulated RTD sensors have flexible sheaths in lengths up to 50 meters for a variety of installations. The SS316L sheath allows a wide range of applications in chemicals, food and pharmaceuticals. Furthermore, bendable sheaths are coiled to facilitate transport of the product. The measuring element in Mineral Insulated RTD can be designed in several configurations and conforms to the IEC 751 standard for RTD sensors. It may be constructed of Pt50, Pt100, Pt200, Pt500 or Pt1000; with 2, 3 or 4 wire single or dual assembly; and in Class A or B per our customers’ requirements. A triple element assembly in 6 mm diameter may also be designed on request. 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. A weatherproof die-case aluminum head with threaded cap and chain protects the construction inside; other terminal heads may also be designed. 1/2” BSP (F) single cable entry with a single compression gland is standard with the option of dual cable entry and double compression glands. The standard temperature measurement range for this RTD sensor is -50 to 400°C, however it may be designed for other temperature ranges. Compacted Magnesium Oxide (MgO) further protects the assembly from vibrations and increases its durability. Several options available with Mineral Insulated RTD sensors are head-mounted transmitters, connecting cables and thermowells.

  • Variety of measuring element configurations
  • Bendable sheath up to 50 meters long
  • 50 mm long non bendable tip
  • -50 to 400°C range
  • 3, 4, 5, 6 and 8 mm diameters
  • Different types of terminal heads available
  • SS316L sheath material
  • Copper or Nickel conductors


  • Temperature measurement



  • RHW500: Standard assembly
  • RHW501: Free rotating Fitting
  • RHW502: With hex nipple
  • RHW503: Round nipple connection
  • RHW505: NUN Assembly
  • RHW506: Adjustable compression fitting
  • RHW508: Fixed flange Connection
  • RHW509: Adjustable flange Connection
  • Please choose from our customization options and enter under comments while inquiring about this product`

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