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Types
of Sensors Thermocouples
Thermistors
Resistance
(RTDs)
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Pyrometers
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(Pyrometers)
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(Paints, Crayons,
Labels)
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Thermocouples
Thermistors
Resistance (RTDs)
IR
Thermometers
Optical Pyrometers
Radiation
Thermometers (Pyrometers)
Thermal Imagers
Fiberoptic
Semiconductor
Glass Thermometers
Filled
Systems
Phase Change Devices , Bimetallic
Other Displays &
Electronics
Meters
Transmitters
Recorders,
Controllers
Data Acquisition
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Thermocouple Wire and Connector
Color Codes
Thermocouple
wire, extension wire (compensating cable) and connectors are often but not always
color-coded to indicate both the thermocouple type and the polarity of the thermoelectric
voltage that will be or is being developed. Thermocouples must have matched calibration
extension wire at the measurement end to account for temperature differences between
the tip or hot junction and the measuring point which may be either the cold junction
or an intermediate junction.
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