Thermocouple is one of the most commonly used temperature detecting element in industry, the working principle of the thermocouple are two different components of conductor on both ends of the connection circuit, such as two different connection end temperature, then produce thermoelectric potential physical phenomena within the loop.

The hot runner thermocouple have below advantage:

1.high measurement precision.

2.Because of thermocouple directly contact with the object which is being measured, so not 3.affected by the medium .

4.the thermocouple measuring range is very widely.

The commonly used thermocouple can measure the temperature range from - 50 ~ + 1600 ℃, some special thermocouple minimum measurable to - 269 ℃ (e.g., gold iron nickel chrome), up to + 2800 ℃

5. simple structure, easy to use.

Thermocouple is usually composed of two different kinds of metal wire, and is not limited by the size and the beginning, the outside has protective casing, which are very convenient.

hot runner thernocouple

The basic principle of thermocouple temperature measurement

Welding the conduct of semi-conductor A&B together,form a closed loop.

When conductor A and B presisstent points 1and 2 and the temperature is different ,so the electromootive force happen,this kind of phenomenon called the thermoelectric effect.Thermocouple is in using this effect to work.

The kinds of thermocouple

Commonly used thermocouple can be divided into two categories, thermocouple and non standard thermocouples.

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