KSD301 Temperature Control Switch Purchase Considerations
At present, the price of the KSD301 thermostat on the market is different, and the difference is very large. Of course, there are many differences in quality. So how do you judge the quality of the thermostat? This first needs to start with the principle of the thermostat.
Working principle: The KSD301 thermostat uses a disc-shaped bimetal as a temperature sensing body. When the temperature rises to a certain value, the disc jumps and the drive contacts act quickly to open the circuit. When the temperature drops to a certain value, the disc is reset, and the contacts are restored to their original state, achieving the purpose of the on-off circuit.
Involved indicators:
1, Temperature sensing speed: This aspect needs to match the power of the heating product, the higher the power, the faster the heat. It would need to take into account the time KSD301 temperature sensing thermostat and correct selection of temperature ranges. KSD301 thermostat needs to have the characteristics of fast temperature sensing, fast action and no arcing.
2, KSD301 thermostat itself's heating, the current copper material inside the KSD301 thermostat, different copper materials themselves have different heating. If the material used is self-heating, it will affect the temperature of the bimetal. In this way, it is necessary to adopt non-current thermal effect design, accurate temperature and long service life.
3. Installation of KSD301 thermostat: The temperature of the temperature control switch is determined by the aluminum cover sealed on the surface, and then the air inside the KSD301 thermostat or the radiant heat through the aluminum cover is given to the bimetal. Then the installation should be such that the product is placed close to the mounting surface of the controlled appliance. Then in the installation it must also be considered, can not forcefully collapse or deform the shell, so as not to affect its performance.
4. When the KSD301 thermostat is used in some heat-sensitive products that are sensitive to voltage and current, then it is necessary to consider the electrical problems. The best choice is the normal electrical strength: 50HZ, 2000V, 1m temperature-free switch without breakdown or flash.
5. Service life is the key:
The life of the SD301 thermostat needs to take into account two key components. One is a bimetal, and the life of different temperature sheets will vary greatly. Of course, the price will vary greatly. One is the contact, and the on/off of the temperature control switch is realized by the contact and disconnection of the contact, so the material and material thickness capable of withstanding a certain current and voltage are required. The above two points are not much to say.
Precautions
1. When using contact temperature sensing, the metal cover should be close to the mounting surface of the controlled appliance. In order to ensure the temperature sensing effect, the temperature sensitive surface should be coated with thermal grease or other similar heat transfer medium.
2. Do not crush, loosen or deform the top of the cover during installation to avoid affecting performance.
3, can not let the liquid penetrate into the temperature controller, do not crack the shell, do not arbitrarily change the shape of the external terminal.
4, the product is used in a circuit of no more than 5A current, the copper core section should be selected to be 0. 5-1mm2 wire connection; For use in circuits with a current of no more than 10A, a copper core cross-section of 0.75-1.5mm2 wire connection should be selected.
5. The product should be stored in a warehouse with a relative humidity of less than 90% and an ambient temperature of 40 ° C below, which is ventilated, clean, dry and free of corrosive gases.
Working principle: The KSD301 thermostat uses a disc-shaped bimetal as a temperature sensing body. When the temperature rises to a certain value, the disc jumps and the drive contacts act quickly to open the circuit. When the temperature drops to a certain value, the disc is reset, and the contacts are restored to their original state, achieving the purpose of the on-off circuit.
Involved indicators:
1, Temperature sensing speed: This aspect needs to match the power of the heating product, the higher the power, the faster the heat. It would need to take into account the time KSD301 temperature sensing thermostat and correct selection of temperature ranges. KSD301 thermostat needs to have the characteristics of fast temperature sensing, fast action and no arcing.
2, KSD301 thermostat itself's heating, the current copper material inside the KSD301 thermostat, different copper materials themselves have different heating. If the material used is self-heating, it will affect the temperature of the bimetal. In this way, it is necessary to adopt non-current thermal effect design, accurate temperature and long service life.
3. Installation of KSD301 thermostat: The temperature of the temperature control switch is determined by the aluminum cover sealed on the surface, and then the air inside the KSD301 thermostat or the radiant heat through the aluminum cover is given to the bimetal. Then the installation should be such that the product is placed close to the mounting surface of the controlled appliance. Then in the installation it must also be considered, can not forcefully collapse or deform the shell, so as not to affect its performance.
4. When the KSD301 thermostat is used in some heat-sensitive products that are sensitive to voltage and current, then it is necessary to consider the electrical problems. The best choice is the normal electrical strength: 50HZ, 2000V, 1m temperature-free switch without breakdown or flash.
5. Service life is the key:
The life of the SD301 thermostat needs to take into account two key components. One is a bimetal, and the life of different temperature sheets will vary greatly. Of course, the price will vary greatly. One is the contact, and the on/off of the temperature control switch is realized by the contact and disconnection of the contact, so the material and material thickness capable of withstanding a certain current and voltage are required. The above two points are not much to say.
Precautions
1. When using contact temperature sensing, the metal cover should be close to the mounting surface of the controlled appliance. In order to ensure the temperature sensing effect, the temperature sensitive surface should be coated with thermal grease or other similar heat transfer medium.
2. Do not crush, loosen or deform the top of the cover during installation to avoid affecting performance.
3, can not let the liquid penetrate into the temperature controller, do not crack the shell, do not arbitrarily change the shape of the external terminal.
4, the product is used in a circuit of no more than 5A current, the copper core section should be selected to be 0. 5-1mm2 wire connection; For use in circuits with a current of no more than 10A, a copper core cross-section of 0.75-1.5mm2 wire connection should be selected.
5. The product should be stored in a warehouse with a relative humidity of less than 90% and an ambient temperature of 40 ° C below, which is ventilated, clean, dry and free of corrosive gases.
