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PtRh13-Pt R-Type Thermocouple Ultra-Precise High-Temp Sensing & Steady Thermal Response

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PtRh13-Pt R-Type Thermocouple Ultra-Precise High-Temp Sensing & Steady Thermal Response

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Brand Name :	Huona
Model Number :	Type R
Certification :	ISO9001
Price :	Negotiable
Payment Terms :	L/C,T/T,Western Union,MoneyGram
Supply Ability :	1000m per month
Delivery Time :	5-21 days

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PtRh13-Pt R-Type Thermocouple Ultra-Precise High-Temp Sensing & Steady Thermal Response

Product Description

Type R Thermocouple Wire

Product Overview

Type R thermocouple wire is a high-precision precious metal thermocouple composed of a platinum-rhodium 13% alloy (positive leg) and pure platinum (negative leg). It belongs to the platinum-rhodium thermocouple family, offering superior stability and accuracy in high-temperature environments, especially in the range of 1000°C to 1600°C. Compared to Type S thermocouples, it has a higher rhodium content in the positive leg, providing enhanced performance in long-term high-temperature applications.

Standard Designations

Thermocouple Type: R-type (Platinum-Rhodium 13-Platinum)
IEC Standard: IEC 60584-1
ASTM Standard: ASTM E230

Key Features

High-Temperature Stability: Long-term operating temperature up to 1400°C; short-term use up to 1700°C
Superior Accuracy: Class 1 tolerance of ±1.5°C or ±0.25% of reading (whichever is larger)
Low Drift Rate: ≤0.05% thermoelectric potential drift after 1000 hours at 1200°C
Oxidation Resistance: Excellent performance in oxidizing and inert atmospheres (avoid reducing environments)
Higher Thermoelectric Power: Generates 10.574 mV at 1500°C (reference junction at 0°C)

Technical Specifications

Attribute	Value
Wire Diameter	0.2mm, 0.3mm, 0.5mm (tolerance: -0.015mm)
Thermoelectric Power (1000°C)	7.121 mV (vs 0°C reference)
Long-Term Operating Temperature	1400°C
Short-Term Operating Temperature	1700°C (≤20 hours)
Tensile Strength (20°C)	≥130 MPa
Elongation	≥25%
Electrical Resistivity (20°C)	Positive leg: 0.24 Ω·mm²/m; Negative leg: 0.098 Ω·mm²/m

Chemical Composition (Typical, %)

Conductor	Main Elements	Trace Elements (max, %)
Positive Leg (Platinum-Rhodium 13)	Pt:87, Rh:13	Ir:0.02, Ru:0.01, Fe:0.003, Cu:0.001
Negative Leg (Pure Platinum)	Pt:≥99.99	Rh:0.003, Ir:0.002, Fe:0.001, Ni:0.001

Product Specifications

Item	Specification
Length per Spool	5m, 10m, 20m, 50m (precious metal material)
Surface Finish	Annealed, mirror-bright (no oxide layer)
Packaging	Vacuum-sealed in argon-filled containers to prevent contamination
Calibration	NIST-traceable with certificate of thermoelectric potential
Custom Options	Cut-to-length, special cleaning for ultra-high purity applications

Typical Applications

Aerospace engine testing (high-temperature combustion chambers)
High-precision industrial furnaces (sintering of advanced ceramics)
Semiconductor manufacturing (silicon wafer annealing)
Metallurgical research (superalloy melting point testing)
Glass fiber production (high-temperature furnace zones)

We also supply R-type thermocouple probes, connectors, and extension wires. Due to the high value of precious metals, free samples are available in limited lengths (≤1m) upon request, with detailed material certificates and impurity analysis reports.

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