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Ceramic Thermocouple Protection Tubes

The ceramic thermocouple protection tube is a commonly used temperature-sensing component that consists of a ceramic tube and a thermocouple. It measures temperature by detecting changes in thermoelectric potential caused by temperature variations, ensuring accurate and reliable readings in high-temperature environments.

Calibration grade & specifications
  • Tolerance: Class 1, Class 2
  • Electrical Interface: M20×1.5, M22×1.5, 1/2NPT (M30×1.5 and M36×2)
  • Connector Screws:
    Screw Sizes: M12×1.5, M16×1.5, M27×2, G1/2, G3/4, 1/2NPT
(Ceramic protection tube) Thermcouple
Thermocouple grade Model Grade Temperature range ℃ Specifications Thermal response time
τ 0.5(s)
OD mm Protection tube material
Simplex type B WRR-130 B 0~1800 φ16 Alundum tube < 150
Simplex type B WRR-131 B 0~1800 φ25 Alundum tube < 360
Duplex type B WRR2-130 B 0~1800 φ16 Alundum tube < 150
Duplex type B WRR2-131 B 0~1800 φ25 Alundum tube < 360
Simplex type S WRP-130 S 0~1600 φ16 Ceramic < 150
Simplex type S WRP-131 S 0~1600 φ25 Ceramic < 360
Duplex type S WRP2-130 S 0~1600 φ16 Ceramic < 150
Duplex type S WRP2-131 S 0~1600 φ25 Ceramic < 360
Simplex type K WRN-133 K 0~1100 φ20 Ceramic < 240
Duplex type K WRN2-133 K 0~1100 φ20 Ceramic < 240
Simplex type K WRN-132 K 0~1100 φ16 Ceramic < 240
Remarks
  • Non-inserted tube materials: SS304, SS316, or SS310.
  • Tubes with a diameter of φ25mm are double-layer ceramic.
  • Custom tubes can be manufactured based on customer designs.
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