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Type E Thermocouple - Technical Information



Type E - Nickel-Chromium vs Copper-Nickel

Thermocouple Type E, also known as Chromel-Constantan, this thermocouple is known for its high output - the highest of the commonly used devices, although this is less significant in these days of ultra stable solid state amplifiers. The usable temperature range extends from about -250°C (cryogenic) to 900°C in oxidising or inert atmospheres. Recognised as more stable than Type K, it is therefore more suitable for accurate measurement. However, Type N still ranks higher because of its stability and range.

Type E Thermocouples - Typical Constructions and Styles

Type E Mineral Insulated
Thermocouples
Rugged sensors, ideal for most applications. Vast choice of terminations e.g. pot seals, cables, connectors, heads etc.
Type E Swaged Tip
Thermocouples
Fast response thermocouples ideal for industrial and other applications.
Type E Miniature
Thermocouples
Ideal for precision temperature measurements where minimal displacement and a fast response is required.
Type E Heavy Duty
Thermocouples
For industrial applications such as furnaces, kilns, ovens, boilers, flues etc. Many types of sheath material available.
General Purpose
Type E Thermocouples
A wide range of thermocouples to suit many applications. Hand held, surface, bayonet, bolt, patch styles etc.
ATEX/IECEx Approved
Type E Thermocouples
A large range of thermocouples with a variety of terminations such as pot seal, terminal heads etc.

Type R - Technical Data

Conductor Combination Approximate generated
EMF change in µV
per ºC change
(referenced to 0ºC) at:
Approximate Working
Temperature Range
Initial Calibration Tolerances to ASTM E-230
(whichever is greater)
Thermocouple Output Tolerances
to IEC 60584-1
+ Leg - Leg 100ºC 500ºC 1000ºC ºF ºF Standard Special Type Class 1 Class 2 Class 3
NICKEL - CHROMIUM
Also known as: Chromel™,
Tophel™, Chromium, Nickel
NICKEL - ALUMINIUM
Also known as: Nickel-Copper,
Constantan, Advance™,
Cupron™
68 81 32 to 1600 0 to 870 ±1.7 or ±0.5% ±1 or ±0.4% Temperature Range
Tolerance Value
Temperature Range
Tolerance Value
–40°C to +375°C
±1.5°C
375°C to 800°C
±0.004⋅ [t]
–40°C to +333°C
±2.5°C
333°C to 900°C
±0.0075 ⋅ [t]
–167°C to +40°C
±2.5°C
–200°C to –167°C
±0.015 ⋅ [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.

Thermocouple Wire Color Codes for E Type Thermocouples

ANSI MC96.1 United StatesInternational Color Code
to IEC 60584-3
Redundant national colors
Thermocouple Grade Extension Grade BS 1843 DIN 43714
ANSI MC96.1 Type E ThermocoupleANSI MC96.1 Type E ExtensionIEC60584-3 Type E ThermocoupleBS1843 Type E ThermocoupleDIN 43714 Type E Thermocouple

Please click here for all thermocouple wire color codes.

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