thermocouple
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AI overview
A thermocouple is a simple device made of two different metals joined together that produces an electrical signal when exposed to different temperatures. It's widely used in temperature measurement because it's inexpensive, durable, and can work in harsh environments where other thermometers might fail.
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Article
46 sectionsContents
- Principle of operation
- Seebeck effect
- Characteristic function
- Reference junction
- Practical concerns
- Circuit construction
- Metallurgical grades
- Aging
- Types
- Nickel-alloy thermocouples
- Type E
- Type J
- Type K
- Type M
- Type N
- Type T
- Platinum/rhodium-alloy thermocouples
- Type B
- Type R
- Type S
- Tungsten/rhenium-alloy thermocouples
- Type C
- Type D
- Type G
- Others
- Chromel–gold/iron-alloy thermocouples
- Platinel II
- Platinum/molybdenum-alloy thermocouples
- Iridium/rhodium alloy thermocouples
- Pure noble-metal thermocouples Au–Pt, Pt–Pd
- HTIR-TC (High Temperature Irradiation Resistant) thermocouples
- Comparison of types
- Thermocouple insulation
- Wires insulation
- Table of insulation materials
- Applications
- Steel industry
- Gas appliance safety
- Thermopile radiation sensors
- Manufacturing
- Power production
- Process plants
- Thermocouple as vacuum gauge
- See also
- References
- External links
thumb|right|Thermocouple connected to a multimeter displaying room temperature in °C
A thermocouple, also known as a thermoelectrical thermometer, is an electrical device consisting of two dissimilar electrical conductors forming an electrical junction. A thermocouple produces a temperature-dependent voltage as a result of the Seebeck effect, and this voltage can be interpreted to measure temperature. Thermocouples are widely used as temperature sensors.