platinum rhodium thermocouple for high‑temperature furnace

Metal Sheath Platinum Rhodium Thermocouple

High-Temperature Sensing for Process Equipment and OEM Systems

Wattheat metal sheath platinum rhodium thermocouples with are designed for reliable temperature measurement in industrial process equipment up to 1200°C. Featuring high-nickel alloys or stainless steel protection tubes and robust metal connection heads, they provide stable performance in oxidizing atmospheres where base-metal thermocouples need enhanced durability or accuracy.

Type S, R or B noble-metal sensing elements are protected by metal alloy sheaths suitable for reaction vessels, heat transfer systems and OEM machinery requiring consistent thermal monitoring.

Metal Sheath Platinum Rhodium Thermocouple

High-Temperature Sensing for Process Equipment and OEM Systems

Type S, R or B noble-metal sensing elements are protected by metal alloy sheaths suitable for reaction vessels, heat transfer systems and OEM machinery requiring consistent thermal monitoring.

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

Metal Sheath Platinum Rhodium Thermocouples for Process Equipment

Metal Sheath Platinum Rhodium Thermocouple uses high-purity Pt-Rh alloy wires within stainless steel or alloy protection tubes. This construction offers improved service life and stability compared to base-metal thermocouples in moderate-to-high temperature industrial applications requiring mechanical robustness.

The metal sheath design supports installation in equipment exposed to pressure, vibration or light chemical conditions. Wattheat configures probe lengths, process connections and head types to match OEM specifications for reactors, molds, ovens and heat transfer systems.

Key Technical Advantages of thermocouple with metal protection tube

Mechanical Durability: Stainless steel or alloy sheath protects noble-metal Pt-Rh wires from vibration, mechanical impact and process stresses common in industrial equipment.
Pressure-Rated Construction: Metal sheath design supports installation in pressurized vessels, reactors and piping systems requiring gas-tight process connections.
Flexible Process Connections: Configurable NPT/BSP threads, ANSI/DIN flanges and welded nozzles match vessel penetrations, thermowells and OEM equipment interfaces.
Noble-Metal Accuracy: Type S, R or B calibrations provide stable thermoelectric output for reliable temperature measurement up to 1200°C in oxidizing atmospheres.
Industrial Head Protection: Robust metal connection heads with sealed construction and ceramic terminal blocks ensure reliable signal transmission in plant environments.
Thermal Response Balance: Sheath diameter and wall thickness options balance rapid response with mechanical strength for process control applications.
OEM Integration Ready: Standard dimensions and mounting patterns compatible with common temperature transmitters, controllers and extension wiring systems.

Installation Types of Thermocouple

Structural Diagram of Thermocouple

Comparison of Common Thermocouple Types

To help you select the most accurate sensor for your thermal process, please refer to the standard graduation types below. While we offer a full range of sensors, our Metal Sheath Platinum-Rhodium series (Type S/R/B) is specifically optimized for high-precision measurement in industrial environments up to 1300°C.

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

Typical Industrial Applications

Metal Sheath Platinum Rhodium Thermocouple applications include:

Vacuum & Aerospace Furnaces: High-accuracy temperature control in thermal vacuum chambers and aerospace component testing.
Metallurgical Heat Treatment: Durable sensing in carburizing, nitriding, and annealing furnaces where mechanical vibration is present.
Chemical & Petrochemical Reactors: Reliable monitoring in high-temperature reactors and pressurized heat transfer fluid systems.
Glass & Semi-conductor Pilot Lines: Precision measurements in experimental melting or diffusion processes where ceramic tubes are too fragile.
Industrial Pressure Vessels: Integration into reactors and piping systems requiring gas-tight, pressure-rated metal connections.
Advanced Laboratory Research: High-stability sensing in pilot plant equipment and small-scale high-temperature reactors.

These demanding environments benefit from the unmatched accuracy of Platinum-Rhodium elements combined with the rugged mechanical durability of industrial alloy sheaths.

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

As an expert in industrial heating and temperature sensing, Wattheat delivers high-performance Metal Sheath Platinum Rhodium Thermocouples that combine the laboratory-grade precision of Type S, R, and B noble-metal elements with the rugged mechanical durability of specialized alloy sheaths. By integrating custom-engineered interfaces—including pressure-rated NPT/BSP threads and heavy-duty flange mountings—we provide OEMs with reliable temperature sensors monitoring solutions for demanding pressurized vessels and high-vibration thermal processes up to 1300°C.