Type E Thermocouple - Technical Information
Type E - Nickel-Chromium vs Copper-Nickel, IEC 60584-1
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
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Thermocouples
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Thermocouples
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Thermocouples
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Type E Thermocouples
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Type E Thermocouples
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Type E - 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 |
NICKEL - CHROMIUM Also known as: Chromel™, Tophel™, Chromium, Nickel | NICKEL - ALUMINIUM Also known as: Nickel-Copper, Constantan, Advance™, Cupron™ |
68 | 81 | – | 0 to +800ºC | -40 to +900ºC | 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| |
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.
E Type Thermocouple Cable Colour Codes
International Colour Code to IEC 60584-3 | ANSI MC96.1 | Redundant national colour coding for thermocouple cables | ||
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BS 1843 | DIN 43714 | NFC 42324 | ||
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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.