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Type R Thermocouple - Technical Information

Type R - Platinum-13% Rhodium vs Platinum, IEC 60584-1

Thermocouple Type R is similar to the Type S combination, this thermocouple has the advantage of slightly higher output and improved stability. In general Type R thermocouples are preferred over Type S, and applications covered are broadly identical.

Type R Thermocouples - Typical Constructions and Styles

Type R Mineral Insulated
Thermocouples Mineral Insulated Type R Thermocouples

Rugged sensors, ideal for most applications. Vast choice of terminations e.g. pot seals, cables, connectors, heads etc. Type R Thermocouples for use in Vacuum Applications Type R Thermocouples for vacuum use

Ceramic sheathed calibrated thermocouples designed specifically in vacuum furnace applications with very low leak rates Type R Miniature
Thermocouples iniature Type R Thermocouples

Ideal for precision temperature measurements where minimal displacement and a fast response is required. Type R Heavy Duty
Thermocouples Heavy Duty Type R Thermocouples

For industrial applications such as furnaces, kilns, ovens, boliers, flues etc. Many types of sheath material available. ATEX/IECEx Approved
Type R Thermocouples ATEX Approved Type R Thermocouples

A large range of thermocouples with a variety of terminations such as pot seal, terminal heads etc.

Everything you need to know about thermocouples and RTDs
Explore our in-depth Thermocouple & RTD Guide — a technical resource developed for engineers and specifiers. Covers sensor selection, installation practices, standards and tolerances, colour codes, wiring configurations, sensor theory and more.

Type R - Technical Data

Conductor Combination		Approximate generated EMF change in µV per ºC change (referenced to 0ºC) at:			Approximate Working Temperature Range		Thermocouple Output Tolerances to IEC 60584-1
+ Leg	- Leg	100ºC	500ºC	1000ºC	Continuous	Short Term	Type	Class 1	Class 2	Class 3
PLATINUM - 13% RHODIUM	PLATINUM	8	10	13	0 to +1600ºC	-50 to +1700ºC	Temperature Range Tolerance Value Temperature Range Tolerance Value	0°C to +1100°C ±1.0°C 1100°C to 1600°C ±(1 +0.003 (t ⋅ 1100)°C	0°C to +600°C ±1.5°C 600°C to 1600°C ±0.0025 ⋅ \|t\|	– – – –

1. The tolerance is expressed either as a deviation in degrees Celsius or as a function of the actual temperature.
2. Thermocouple materials are normally supplied to meet the tolerances specified in the table for temperatures above –40 deg C. These materials however, may not fall within the tolerances for low temperatures given under Class 3 for Types T, E and K thermocouples. If thermocouples are required to meet limits of Class 3, as well as those of Class 1 and/or Class 2, the purchaser should state this, as selection of materials is usually required.
3. The maximum temperature rating is dependant upon construction, size and atmospheric conditions. A more detailed guide for the maximum temperature ratings of mineral insulated thermocouples can be found here.

Cable Colour Codes for R Type Thermocouples

International Colour Code to IEC 60584-3	ANSI MC96.1	Redundant national colour coding for thermocouple cables
International Colour Code to IEC 60584-3	ANSI MC96.1	BS 1843	DIN 43714	NFC 42324
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Free Guide to Thermocouple and Resistance Thermometry

Frequently Asked Questions

What is a thermocouple and how does it work?
A thermocouple is a type of temperature sensor that generates a voltage when two different metals are joined at one end and exposed to a temperature difference between the "hot" junction (where the temperature is measured) and the "cold" junction (the reference point). This voltage is then measured to determine the temperature at the hot junction.
How do I choose the right thermocouple for my application?
The ideal thermocouple depends on factors such as temperature range, accuracy, termination type, mounting requirements and environmental conditions. We offer a variety of thermocouples with different sheath materials, constructions, terminations, and temperature ratings to meet your needs. If you need specific advice, our engineers are happy to assist!
What is the maximum temperature rating of your thermocouples?
Our thermocouples are designed to handle a wide range of temperatures with some mineral insulated thermocouples able to withstand temperatures up to 1400ºC and ceramic sheathed thermocouples going even higher to 1600ºC. Each product listing includes the maximum temperature rating, so you can choose the best thermocouple for your application.