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Sensor Thermocouple Type K

Sensor Thermocouple Type K
Details:
1. Its slender, smooth rod-shaped design allows it to be easily inserted into test tubes, beakers, pipes, injection molding holes, and various containers. Whether measuring the temperature of liquids, molten materials, grain in silos, or air in ovens, it requires only a suitable mounting hole and virtually no modification to the system being measured, making it extremely versatile
2. The probe's insertion length (from tens of millimeters to several meters) and diameter (as thin as 1mm) offer a very wide range of options. Users can flexibly choose the most suitable model based on the depth of the container, space limitations, or requirements for response speed (the thinner the faster), enabling customized measurements
3. The probe tip typically uses exposed contacts or an extremely thin stainless steel sheath, resulting in very low thermal capacity. This design ensures very low thermal resistance when in contact with the measured medium, making it exceptionally sensitive to temperature changes and ideal for processes requiring monitoring of rapid temperature rises or transient temperature fluctuations
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Description
Technical Parameters
Size & Wiring

The sensor thermocouple type K is a temperature sensing element and is the main instrument for directly measuring temperature. A closed circuit consisting of two conductors of different composition materials. Due to different materials and different electron densities, electron diffusion occurs, and an electric potential is generated after stable equilibrium. When there is a temperature gradient at both ends, a current will be generated in the circuit, and a thermal electromotive force will be generated. The greater the temperature difference, the greater the current. After measuring the thermoelectromotive force, the temperature value can be determined. A thermocouple is actually an energy converter that converts thermal energy into electrical energy.

 

advantages of Sensor Thermocouple Type K

 

  • Wide temperature measurement range and relatively stable performance;
  • high measurement accuracy, the thermocouple is in direct contact with the object being measured and is not affected by the intermediate medium; the thermal response time is fast, and the thermocouple can respond flexibly to temperature changes;
  • The measurement range is large, and the thermocouple can continuously measure temperatures from -0 to +250°C;
  • The thermocouple has reliable performance and good mechanical strength. Long service life and easy installation.

 

sensor thermocouple type K 2
sensor thermocouple type K 3

 

FAQ

 

Q: What are the selection criteria for sensor thermocouple type K?

A: To ensure the reliable and stable operation of the thermocouple, the structural requirements for the thermocouple are as follows:
① The two thermoelectric electrodes forming the thermocouple must be welded firmly;
② Good insulation should be maintained between the two thermoelectric electrodes to prevent a short circuit.
③ The connection between the compensation wire and the free end of the thermocouple should be convenient and reliable;
④ The protective cover should ensure that the thermoelectric electrode is fully isolated from harmful media.

 

Q: What is the function of thermocouple compensation wire?

A: The function of the sensor thermocouple type K compensation wire
(1) It is used to extend the cold end of the thermocouple, connect it with a thermometer to form a temperature measurement system, and move the reference end of the thermocouple from a place with a higher temperature to a place with a more stable ambient temperature.
(2) Save a large amount of precious and rare metal materials used to manufacture hot electrodes;
(3) Use compensation wires to facilitate installation and line laying;
(4) Replacing the hot electrode with a compensation wire with a larger diameter and higher conductivity can reduce the thermocouple loop resistance and facilitate measurement and automatic control.

 

Q: Is Type K a thermocouple or a thermal resistor?

A: Type K is a thermocouple, and the temperature sensor PT100 is a thermal resistor.
The difference:
1. Different properties: Thermocouples are commonly used temperature measuring elements in temperature measuring instruments. They directly measure temperature and convert the temperature signal into a thermoelectromotive force signal. Thermistor is the most commonly used temperature detector in medium and low temperature areas.
2. Different principles: The temperature measurement principle of thermal resistance is based on the characteristic that the resistance value of a conductor or semiconductor changes with temperature to measure temperature and temperature-related parameters. Thermocouple. When there are two different conductors or semiconductors A and B forming a loop, and the two ends are connected, as long as the temperatures at the two nodes are different, the temperature of one end is T, which is called the working end or hot end, and the temperature of the other end is T0.
3. Different temperature measurement conditions: the thermocouple can continuously measure temperature from -40~+1600℃. RTDs cannot.

 

Q: Installation method of sensor thermocouple type K and PT100 thermal resistor

A: 1. First, measure the dimensions of the thermocouple and thermal resistance flange or thread, and process the matching flange or thread base.
2. According to the size of the flange or threaded base, make holes in the pipe to be measured.
3. Welding of flange or thread base. Insert the flange base or thread base into the opened hole, and weld the flange base or thread base to the pipe to be measured.
4. Tighten the thermocouple or thermal resistor with bolts or thread it into the welded threaded base.
5. Connect the junction box of the thermocouple or thermal resistor according to the wiring diagram, and connect it to the corresponding display instrument on the dial. Note that the junction box cannot be in contact with the wall of the measured medium pipe to ensure the temperature inside the junction box does not exceed the 100°C range. The outlet holes of the junction box should prevent short circuits in the terminals caused by poor sealing, moisture, dust, etc., deposition.
6. The location where the thermocouple or thermal resistor is installed should be convenient for inspection and maintenance.

 

 

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K-type thermocouple specifications
 

 

Model Products Name Wire material Line skin Wire diameter
(MM)		 Wire core specifications length
(MM)		 Graduation mark Actual application temperature
(℃)		 thermal conductor Thermal conductor material Thermal conductor size
(MM)		 Nut material Thread Nut size Connection terminal Connection terminal size
(MM)		 Spring material Spring size
(outer diameter * length MM)		 Insulated/non-insulated
TS-L0530-05 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 500 K 0-250 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TS-L0530-10 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 1000 K 0-250 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TS-L0530-15 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 1500 K 0-250 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TS-L0530-20 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 2000 K 0-250 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TS-L0540-05 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 500 K 0-250 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TS-L0540-10 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 1000 K 0-250 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TS-L0540-15 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 1500 K 0-250 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TS-L0540-20 Probe type K-type thermocouple KX nickel chromium nickel silicon stainless steel braided 2*3 7*0.2 2000 K 0-250 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0530-05 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 500 K 0-200 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0530-10 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 1000 K 0-200 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0530-15 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 1500 K 0-200 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0530-20 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 2000 K 0-200 Head pipe 304 stainless steel 5*0.3*30       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0540-05 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 500 K 0-200 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0540-10 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 1000 K 0-200 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0540-15 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 1500 K 0-200 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated
TR-L0540-20 Probe type K-type thermocouple KX nickel chromium nickel silicon Silica gel 3 7*0.2 2000 K 0-200 Head pipe 304 stainless steel 5*0.3*40       Red and blue SV fork 20*6.5/4.3*0.5     non-insulated

 

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