Specific Introduction to the Skills of Ion Infrared Thermometer
The infrared thermometer has an ionization chamber. The artificial radiation element americium 241(Am241) used in the ionization chamber has an intensity of about micro Curie. Under normal circumstances, it is in the balance of electric field. When smoke enters the ionization chamber, the positive and negative ions of ionization attack disturb the normal movement of charged particles and move to the positive and negative electrodes respectively under the effect of electric field, which destroys the balance, current and voltage between the ionization chambers. The ion infrared thermometer is a micro-current changing device that senses smoke particles through the voltage change caused by the ionization chamber equivalent to the smoke sensitive resistor. Then the microscopic appearance is that the addition of equivalent resistance in the ionization chamber leads to the increase of voltage at both ends of the ionization chamber, from which the smoke situation in the air can be judged.
MTi-15 ionic infrared thermometer uses a trace amount of artificial radioactive substance americium 241. Because the thermometer body is covered by a metal shell, radiation will never leak and users can use it with confidence. In addition, its radioactive energy only uses 55% of NIS-09C, so countries that have restrictions on the use of radioactive energy can also use it with confidence. Moreover, the foot equipment and output characteristics of this thermometer are interchangeable with those of other companies. After the MTi-15 source film is selected with low radiation energy and the ionization chamber is properly expanded, the balance voltage becomes more stable in the cleaning moisture, which greatly reduces the false alarm rate. MTi-15 ionic infrared thermometer is a kind of thermometer with advanced skills and stable operation. It is widely used in various fire alarm systems, and its function is far superior to that of gas-sensitive resistance fire alarms.
Comparison between photoelectric smoke alarm and ion infrared thermometer;
There is an optical maze in the photoelectric smoke alarm, which is equipped with an infrared tube. When there is no smoke, the infrared receiving tube can't receive the infrared light announced by the infrared emitting tube. When the smoke enters the optical maze, the receiving tube receives the infrared light after refraction and reflection, and the intelligent alarm circuit judges whether it exceeds the threshold, and if it does, it announces an alarm. The ion smoke alarm should be more active in sensing fine smoke particles and can respond to all kinds of smoke in a balanced way; However, the forward photoelectric smoke alarm is more active in sensing slightly larger smoke particles, but less responsive to gray smoke and black smoke. When a raging fire breaks out, there are more fine particles of smoke in the air, while when smoldering, there are more slightly larger smoke particles in the air. If there are a lot of fine particles of smoke after the fire breaks out, the ion smoke alarm will give an alarm before the photoelectric smoke alarm. The distance between these two kinds of smoke alarms is not large at all times, but this kind of fire extends very quickly, so it is better to install ion smoke alarms in such places. Another kind of smoldering fire has a lot of slightly larger smoke particles, and the photoelectric smoke alarm will give an alarm before the ion smoke alarm. This kind of place advocates installing photoelectric smoke alarm. If you want to have both benefits, you can install both smoke alarms in the local area where smoke alarms are needed.
