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Gas sensor WB-MSGR/en: различия между версиями
Новая страница: «There is a heater inside the sensor, which is constantly switched on, which makes it possible to measure the concentration of gases. If the sensor remained de-ene…»
(Новая страница: «= = = Operating principle and sensor setting === When the concentration of a certain gas changes, the resistance of the semiconductor sensing element ('''SE''') o…») |
(Новая страница: «There is a heater inside the sensor, which is constantly switched on, which makes it possible to measure the concentration of gases. If the sensor remained de-ene…») |
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When the concentration of a certain gas changes, the resistance of the semiconductor sensing element ('''SE''') of the Rs sensor changes. The measurements use the ratio of the resistance of the SE Rs to the resistance measured in the reference medium Rs0. As the concentration of gases to which the sensor is sensitive increases, the SE resistance decreases, respectively, the Rs/Rs0 Ratio decreases. Based on the value of the Rs/Rs0 ratio, a decision can be made to turn on the warning signal. For different gases, the same RS/Rs0 ratio corresponds to different concentrations of these gases in the environment. | When the concentration of a certain gas changes, the resistance of the semiconductor sensing element ('''SE''') of the Rs sensor changes. The measurements use the ratio of the resistance of the SE Rs to the resistance measured in the reference medium Rs0. As the concentration of gases to which the sensor is sensitive increases, the SE resistance decreases, respectively, the Rs/Rs0 Ratio decreases. Based on the value of the Rs/Rs0 ratio, a decision can be made to turn on the warning signal. For different gases, the same RS/Rs0 ratio corresponds to different concentrations of these gases in the environment. | ||
There is a heater inside the sensor, which is constantly switched on, which makes it possible to measure the concentration of gases. If the sensor remained de-energized for a long time, then the output to the operating mode will require some time: from two days, if the sensor was not turned on for a month, to a week, if the sensor was not turned on for more than six months. Operation in an aggressive environment leads to degradation of SE, ice and condensate reduce its sensitivity. | |||
Температура и влажность также влияют на сопротивление чувствительного элемента: оно падает с увеличением температуры и влажности. | Температура и влажность также влияют на сопротивление чувствительного элемента: оно падает с увеличением температуры и влажности. | ||