The Reckmann GmbH Glass Thermocouple with Neck Tube & Exchangeable Platinum Tip is a high-temperature industrial sensor engineered and manufactured directly by Reckmann GmbH Sensor & Messtechnik (Germany). Designed specifically to optimize lifecycle operating costs across container glass, float glass, tableware, and continuous fiberglass manufacturing lines, this modular thermocouple delivers precise, drift-free thermal monitoring inside forehearth channels, feeder bowls, and melting tanks where molten glass fluid causes severe chemical corrosion and hydrodynamic erosion at temperatures between 1200°C and 1600°C.

The core technological breakthrough of this model is its modular architecture featuring an Exchangeable Platinum Tip. When the immersion tip is subjected to long-term operational wear or thermal erosion, plant operators can detach and replace only the precious metal Platinum/PtRh tip assembly without discarding the primary ceramic protection body and metallic neck tube assembly. This exchangeable design maximizes precious metal recycling value, substantially reduces replacement inventory costs, and minimizes maintenance downtime during forehearth servicing.

The complete assembly consists of four critical subcomponents:
1. Precious Metal Thermocouple Insert: High-precision Type S (Pt10%Rh-Pt), Type R (Pt13%Rh-Pt), or Type B (Pt30%Rh-Pt6%Rh) thermocouple elements adhering to Class 1 tolerances per IEC 60584 / DIN EN 60584, providing high millivolt signal stability.
2. Exchangeable Precious Metal Tip: The immersion tip exposed to molten glass is armored with a replaceable, high-purity Platinum or Platinum-Rhodium alloy thimble (Pt, PtRh10, PtRh20, or dispersion-strengthened DPH Platinum), impervious to glass dissolution and oxidation at elevated temperatures.
3. High-Purity Ceramic Sheath: Recrystallized Alumina ceramic Alsint 99.7 (Type C 799, >99.7% Al2O3) offering exceptional electrical insulation and protection against atmospheric contamination.
4. Structural Neck Tube & Terminal Head: A heat-resistant alloy neck tube (Inconel 600 / Heat-resistant Stainless Steel) isolates process heat transfer to the aluminum or stainless steel connection head (Form B / Form A, rated IP65/IP66), accommodating ceramic terminal blocks or built-in 4-20mA / HART temperature transmitters.

• Manufacturer: Reckmann GmbH (Sensor & Messtechnik - Germany)
• Product Category: Glass Industry High-Temperature Thermocouples
• Model Configuration: Glass TC with neck tube & exchangeable platinum tip
• Sensor Types: Type S (PtRh10-Pt), Type R (PtRh13-Pt), or Type B (PtRh30-PtRh6)
• Tolerance Class: Class 1 per IEC 60584-2 / DIN EN 60584
• Continuous Operating Temperature: 0 °C to +1300 °C (Type S/R) / up to +1600 °C (Type B)
• Modular Tip Architecture: Detachable and exchangeable precious metal immersion tip design
• Outer Tip Material: High-purity Platinum (Pt) or Platinum-Rhodium Alloy (PtRh10, PtRh20, DPH Platinum)
• Inner Ceramic Sheath: Alsint 99.7 High-Purity Alumina Ceramic (DIN EN 60672-3 Type C 799, > 99.7% Al2O3)
• Neck Tube Material: Heat-resistant alloy (Inconel 600 / Incoloy 800 / Heat-resistant Stainless Steel)
• Terminal Connection Head: Cast Aluminium / Stainless Steel Head Form B / Form A (IP65 / IP66 rated)
• Terminal Block: Ceramic terminal base 2-pole or 4-pole (Single / Duplex element configuration)
• Optional Transmitter: Built-in 4-20 mA / HART programmable head-mounted temperature transmitter
• Outer Sheath Diameter: Engineered per furnace drawing requirements (typically 6.0 mm to 15.0 mm)
• Immersion & Neck Lengths: Fully customizable to specific forehearth, feeder, or tank design dimensions
• Manufacturing Standards & Quality: DIN EN 60584, ISO 9001, Certificate of Origin (100% Made in Germany)