The value of the thermocouple for the gas stove

A component such as a thermocouple is installed to control the flame of a gas stove. It cuts off the gas supply to the burner, if the fire suddenly goes out. The device is used in many devices, including in the plates. If the thermocouple is damaged, there will be interruptions in the gas supply, the flame will cease to burn evenly and will begin to disappear.

How does the thermocouple

Thermocouples are almost the only devices capable of measuring high temperatures, which is why they are used in gas stove designs. This important detail has the following device.

1. The basis are two wires from different metals, which are inextricably soldered to each other.
2. Under the influence of temperature resistance appears, the digital value of which is displayed on the screen.
3. Of course, the generated voltage is not strong, but it is enough to open the magnetic valve.
4. During operation, the electric currents prevent the magnetic valve from slamming, which allows gas to flow freely into the burner. This allows you not to worry about fixing the handle plates. If the fire for some reason goes out, the system will stop the gas supply.

A thermocouple is, first of all, a concern for your safety, therefore, when choosing a gas stove pay attention to the availability of this option. There are elements for which there is enough 20 µV, but most often a voltage of 40-50 µV is required.

The principle of operation of thermocouples is based on the Seebeck effect, which in the physical sense means that the transporting particles change their charge when heated. Depending on the materials chosen, the electrons can move to a cold field or be attracted to the heating point. To create thermocouples use:

• chromel and constantan;
• iron and constantan;
• aluminum and chromel;
• nihros and nisil;
• copper and constantan.

In gas models fused aluminum with chrome. It is important to consider that the strength and performance of the structure depend on the quality of the adhesion.

Positive and negative sides

Of course, the manufacturers of plates, making a thermocouple, weighed all its advantages and disadvantages. But how can an ordinary user understand what this device is for and why it is this and not the other.

Advantages:

1. It is simple and inexpensive to manufacture, which affects the cost of equipment.
2. This device can simultaneously control both the temperature and the flame feeding process.
3. Since the part is in a static position, it has an extremely long service life.
4. It can fix the temperature with a wide range.
5. Thermocouple data is fairly accurate.
6. It is easy to install and replace.

Disadvantages:

1. Since the maximum allowable voltage is only 50 µV, this may cause some inaccuracy in the measurements.
2. Repair the device is often completely impossible. If you fail, you will have to replace it.

Cleaning

If your device works intermittently, then the reason may be in the outgoing contacts. In this case, they just need to fix. Sometimes the thermocouple may just get clogged up and will not have to be changed. You can understand this by the following features:

1. Press the electric ignition button, the burner lights up and burns until you release the electric ignition.
2. After you remove your hand, the flame immediately goes out.

If you observe such a system, then try cleaning the device with fine sandpaper in the area under flame breaker. More information about these and other problems with gas stoves and their elimination can be found. here.

Safety tips

It must be remembered that not only the performance of the plate, but also your safety may depend on the correct operation of the thermocouple. After all, if the control option does not work correctly, a leak may occur that will lead to an explosion.

It is very important to regularly check the accuracy of the instrument, it can prevent a serious catastrophe.

To make the readings as accurate as possible, it should be borne in mind that there are factors that can reduce the quality of the measurement:

1. Incorrectly soldered wires.
2. There is electrical noise.
3. A leak has already occurred.
4. Thermoelectric heterogeneity.

To avoid the above problems, it is recommended to observe the following settings:

1. Use a thicker wire.
2. To take care of the absence of temperature differences in the area.
3. Ensure that the wire does not experience tension and does not fluctuate.
4. Use sensors only in the working temperature range.

If you need to use a thin wire thermocouple in a certain area, in other places you need to make it as strong and thick as possible.

The thermocouples installed in the plates are responsible not only for the quality work, but also for the safety of the equipment. In case of damage, an urgent replacement is required. You can do it yourself, but it is best to call the gasman. Remember: the gas stove is a source of increased danger, and when using it, it is necessary to strictly observe operating rules.