0.71mm/1.22mm/3.2mm KP KN chromel alumel wire K Type Thermocouple Wire

0.71mm/1.22mm/3.2mm KP KN chromel alumel wire K Type Thermocouple Bare Wire

^{Thermocouple wire} is used in a thermocouple from the sensing point to the cold junction compensation point (or reference point). It is the difference in the millivolt output from the sensing point to the reference point that provides the temperature measurement.

Different thermocouple types require different alloy wire combinations. Some of the more popular thermocouple wire & cable types include type E (Chromel/Constantan), Type J (Iron/Constantan), Type K (Chromel/Alumel), and type T (Copper/Constantan).

Thermocouple wire or extension grade wire is recommended to be used to connect thermocouples to the sensing or control instrumentation. The conditions of measurement determine the type of thermocouple wire and insulation to be used. Temperature range, environment, insulation requirements, response, and service life should be considered.

K type thermocouple wire

Positive: Chromel, Negative: Alumel
Color: · bright or oxidized
Product Size: 0.05mm to 10.0mm

Calibration Type Characteristics

TYPE J (Iron vs Constantan) is used in vacuum, oxidizing, inert or reducing atmospheres. Iron element oxidizes rapidly at temperatures exceeding 538'C, and therefore heavier gauge wire is recommended for longer life at these temperatures.

TYPE K (CHROMEL vs ALUMEL) is used in oxidizing, inert or dry reducing atmospheres. Exposure to vacuum limited to short time periods. Must be protected from sulfurous and marginally oxidizing atmospheres. Reliable and accurate at high temperatures.

Positive: Chromel, Negative: Alumel
Color: · bright or oxidized
Product Size: 0.05mm to 10.0mm

TYPE T (Copper vs Constantan) is used or service in oxidizing, inert or reducing atmospheres or in vacuum. It is highly resistant to corrosion from atmospheric moisture and condensation and exhibits high stability at low temperatures. It is the only type with limits of error guaranteed for cryogenic temperatures.

TYPE E (CHROMEL vs Constantan) may be used in oxidizing, inert or dry reducing atmospheres, or for short periods of time under vacuum. Must be protected from sulfurous and marginally oxidizing atmospheres. Produces the highest EMF per degree o any standardized thermocouple.