What is the difference between k type thermocouple and t thermocouple?

What is the difference between k type thermocouple and t thermocouple? Nickel chrome - Nickel silicon thermocouple ( K type thermocouple) Is the amount of metal thermocouple. Its dosage is the sum total of other thermocouple. Has good linearity, thermoelectric emfs is larger, high sensitivity, better stability and average, strong anti-oxidation function, cheap prices, and other advantages, can be used for oxidizing inert atmosphere. Widely adopted for the player.

K type thermocouple cannot indirect at cryogenic temperatures used for sulfur recovery or recovery, oxidation atmosphere and vacuum alternately, also is not recommended for weak oxidizing atmosphere.

- brass Copper and nickel thermocouple ( T thermocouple) Also known as copper - Constantan thermocouple, is also a kind of measuring high temperature thermocouple of cheap metal. It's the positive ( TP） Is pure copper, anode ( TN） For copper and nickel alloy, often as a constantan, chromium and nickel - it - constantan constantan EN general, and iron Constantan constantan Jacqueline Nottingham cannot be universal, although all call constantan, but copper - The lid of the copper and nickel thermocouple temperature range of measurement for - 200~350℃。

T thermocouple has advantages of good linearity, high sensitivity, thermoelectric emfs is bigger, better stability and average, cheap prices, and other advantages, in particular - 200 ~ 0 ℃ temperature zone is applied, the stability can be less than + / - 3 mu V, through high temperature calibration can be as a second-class specifications for high temperature dissemination.

T thermocouple of the anode copper under the low temperature oxidation function is poor, so the use of the temperature was bound.