Wattheat Ceramic Sheath Platinum Rhodium Thermocouple 2026-3-27

Ceramic Sheath Platinum Rhodium Thermocouples 2026-3-27

corundum platinum rhodium thermocouple 2026-3-27

Ceramic Sheath Platinum Rhodium Thermocouple

Ultra-High Temperature Sensing for Kilns and Industrial Furnaces

Ceramic Sheath Platinum Rhodium Thermocouple from Wattheat deliver stable temperature measurement up to 1600°C+ in extreme high-temperature processes. Corundum or high-alumina protection tubes provide oxidation resistance and thermal endurance for static furnace applications where metal-sheathed sensors reach their limits.

Type S, R or B noble-metal elements are protected within ceramic sheaths optimized for glass, ceramics and sintering equipment.

Ceramic Sheath Platinum Rhodium Thermocouple

Ultra-High Temperature Sensing for Kilns and Industrial Furnaces

Type S, R or B noble-metal elements are protected within ceramic sheaths optimized for glass, ceramics and sintering equipment.

Category: Temperature Sensors, Thermocouples Tag: Thermocouple Sensor Brand: Wattheat

Product Overview of Ceramic Sheath Platinum Rhodium Thermocouple

Ceramic Sheath Platinum Rhodium Thermocouples use high-purity Pt-Rh alloy wires within corundum (99% Al₂O₃), high-alumina or silicon carbide protection tubes. This construction excels in continuous ultra-high temperature service where maximum thermal capability outweighs mechanical strength requirements.

The ceramic sheath design supports installation in static furnaces and kilns with oxidizing or inert atmospheres. Wattheat configures probe lengths, mounting arrangements and head types to match furnace wall penetrations, muffle designs and process zone requirements.

Key Technical Advantages of Corundum Platinum Rhodium Thermocouple

Ultra-High Temperature: (1600°C+) Engineered for continuous service in oxidizing furnace atmospheres up to 1800°C—far exceeding the limits of metal sheaths.
99% Al₂O₃ Purity (Zero Contamination): High-purity Corundum (Alumina) tube provides a chemically inert barrier, preventing metallic vapors from poisoning noble-metal wires.
Superior Noble-Metal Stability: Type S, R, and B elements ensure high-accuracy thermoelectric output with minimal calibration drift during long-term furnace operations.
Precise Kiln Compatibility: Customizable sheath diameters (For example, 8–20mm) and immersion lengths designed to match specific kiln wall thicknesses and muffle penetrations.
Industrial Ruggedized Design: Heavy-duty cast iron or aluminum heads with internal ceramic insulators withstand extreme ambient heat near furnace exteriors.

Technical Specifications

Feature	Details
Graduation Types	Type S (PtRh10-Pt), Type R (PtRh13-Pt), Type B (PtRh30-PtRh6)
Sheath Material	99% High-Purity Corundum (Alumina / Al₂O₃)
Continuous Temp	1300°C (S/R) / 1600°C (B)
Short-term Temp	Up to 1600°C (S/R) / 1800°C (B)
Standard Diameters	Φ16mm (Outer), Φ12mm (Inner)
Wire Diameter	0.3mm, 0.4mm, 0.5mm

Installation Types of Thermocouple

Structural Diagram of Thermocouple

Comprehensive Thermocouple Graduation Comparison

Selecting the right sensor material is critical for ensuring measurement accuracy and longevity. The table below compares the temperature limits of common thermocouple types. While standard base-metal sensors (Type K/J/E/T) are suitable for lower ranges, our Ceramic Sheath Platinum-Rhodium series (Type S/R/B) is the industry standard for extreme oxidizing atmospheres up to 1600°C – 1800°C, where other materials would oxidize or fail.

Conductor Material	Type	Graduation	Continuous Temperature	Short-term Temperature
PtRh10-Pt	WRP	S	0-1300°C	0-1600°C
PtRh30-PtRh6	WRR	B	0-1600°C	0-1800°C
PtRh13-Pt	WRQ	R	0-1300°C	0-1600°C
NiCrSi-NiSi	WRM	N	0-1000°C	0-1100°C
NiCr-NiSi	WRN	K	0-900°C	0-1000°C
NiCr-Konstantan	WRE	E	0-600°C	0-700°C
Fe-Konstantan	WRF	J	0-500°C	0-600°C
Cu-Konstantan	WRC	T	0-350°C	0-400°C

Note: While Type B sensors can measure up to 1800°C, the service life depends on the purity of the ceramic protection tube. Wattheat uses 99% High-Purity Corundum (Al₂O₃) to ensure zero contamination of noble-metal wires at these extreme limits.

Typical Industrial Applications

Ceramic Sheath Platinum Rhodium Thermocouples are the industry standard for extreme thermal environments, including:

Glass & Fiberglass Production: Critical temperature monitoring in glass melting tanks, forehearths, and refiners.
Ceramic & Refractory Firing: Continuous high-precision control in tunnel kilns, shuttle kilns, and sintering equipment.
Metallurgical Processes: Reliable sensing in powder metallurgy, vacuum induction furnaces, and ore calcination kilns.
Semiconductor Manufacturing: High-purity thermal environments for wafer diffusion, oxidation, and crystal growth processes.
Aerospace & Lab Research: Standard reference sensors for high-temperature material testing and R&D pilot plants.
Waste Incineration: Durable temperature measurement in hazardous waste and chemical incinerators.

OEM & Customization Options

Wattheat customizes Metal Sheath Platinum Rhodium Thermocouple for OEM integration:

Sheath Materials: Choose from 310S Stainless Steel, Inconel 600, or specialized high-nickel alloys.
Insertion Lengths: Custom fabrication from 100mm to over 2000mm to meet your exact immersion depth.
Process Connections: Available with fixed or adjustable NPT, BSP, or metric threads and ANSI/DIN flanges.
Wiring Configurations: Integrated 4-20mA transmitters or standard ceramic terminal blocks.

Why Choose Wattheat

Wattheat provides high-precision Ceramic Sheath Platinum Rhodium Thermocouples engineered for extreme thermal processes. Our advantage lies in:

Extreme Thermal Limits: Rated performance for continuous service at 1600°C+, supporting peak furnace operations where standard sensors fail.
High-Purity Material Integrity: Using 99% Al₂O₃ (Corundum) sheaths to ensure zero contamination and long-term stability in oxidizing kiln atmospheres.
Precision Engineering: Custom-matched configurations, including diameters from φ8mm to φ20mm, to fit specific furnace geometries and wall thicknesses.
OEM-Grade Consistency: Reliable manufacturing standards that guarantee identical performance for large-scale production furnace installations.