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Type K And J Thermocouples

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  • Larger measurement range
  • Shorter response times
  • Lower cost
  • Better durability
  • Self powered (no excitation signal required)
  • No self-heating effect
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K and J Type Thermocouples Introduction

A Thermocouple is a sensor used to measure temperature. Thermocouples are made from two-wire made from different metals. These wires are welded together at one end to form a tip called a junction. The junction is where the temperature is measured. When the junction sees a change in temperature, a milli-voltage is created. This signal is then calculated by a temperature controller to give an accurate temperature reading.

The most common is type K and J 

Whereas a J Type thermocouple is made up of iron and constantan, K type thermocouples are composed of a nickel/chromium alloy (chromel) and a nickel/aluminium alloy (alumel) which gives them much better protection against oxidation and acidity than the iron limbs of the Type J.

K and J Type Thermocouples Feature

  • Easy assembly and convenient for replacement;

  • Spring thermal element with good shock-proof performance;

  • Wide mesuring range (0~1600 degree Celsius);

  • High mechanical strength and good pressure-resistant performance


Type K and J Thermocouples structure

K and J Type Thermocouples Specification


Material
304/316/316l/310s/3039/Inconel /Ceramic Tube
Thermocouple head
2 pin or 3 pin 
Probe diameter
0.5mm to 10mm
Probe length
Customized
Thread
1/4” 5/16” M4 M5 M6 M8 M12 fixed or flexible
Tube diameter
3-25mm


Theory:Temperature Sensor
Usage:Industrial
Accuracy:±1.5℃
Type:K,E,J 
Temperature range:0-800degree
cable length:1-5m(customized)
Wire diameter:0.3,0.45mm
Certificate:ISO9001
Temperature Sensor Furnace

TypeTemp Range
ThermocoupleB: PtRh30-Pt60~1600℃
R: PtRh13-Pt0~1300℃
S: PtRh10-Pt0~1300℃
N: NiCrSi-NiSi0~1000℃
K: NiCr-NiSi0~900℃
E: NiCr-CuNi0~600℃
J: Fe-CuNi0~500℃
T: Cu-CuNi0~350℃

TypeTemp Range
RTD SensorPT100-200~+650℃
PT1000-200~+650℃
CU50-200~+650℃


-Manuals

K and J Type Thermocouples

-Data sheet


K and J Type Thermocouples Application


Thermocouples are widely used in science and industry; applications include: temperature measurement for kilns, gas turbine exhaust, diesel engines, and other industrial processes. Thermocouples are also used in homes, offices and businesses as the temperature sensors in thermostats, and also as flame sensors in safety devices for gas-powered major appliances.

Type K and J Thermocouples application 1



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