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 InsulatedThermocouples
Rugged sensors, ideal for most applications. Vast choice of terminations e.g. pot seals, cables, connectors, heads etc.Type E Swaged TipThermocouples
Fast response thermocouples ideal for industrial and other applications.
Type E MiniatureThermocouples
Ideal for precision temperature measurements where minimal displacement and a fast response is required.
Type E Heavy DutyThermocouples
For industrial applications such as furnaces, kilns, ovens, boilers, flues etc. Many types of sheath material available.
General PurposeType E Thermocouples
A wide range of thermocouples to suit many applications. Hand held, surface, bayonet, bolt, patch styles etc.
ATEX/IECEx ApprovedType 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.
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 States | International
Color Code to IEC 60584-3 |
Redundant national colors | ||
|---|---|---|---|---|
| Thermocouple Grade | Extension Grade | BS 1843 | DIN 43714 |  |  |  |  |  |
Please click here for all thermocouple wire color codes.
