Zigbee® is a network protocol developed by the Zigbee Alliance for low cost, low power, wireless control and monitoring solutions. Designed on the IEEE® 802.15.4 standard, Zigbee is a self-healing, secure and robust mesh network protocol that scales to hundreds of nodes in a larger range. The Zigbee network can participate in the "Internet of Things" (IOT), enabling remote monitoring and control of network nodes via networked devices such as smartphones, tablets and laptops...
1. Whether the gas sensor can be continuously exposed to the target gas: The gas sensor can intermittently monitor the target gas, which is generally not suitable for continuous monitoring, especially when it involves high gas concentration, high humidity or high temperature. Solution: For continuous monitoring purposes, it is sometimes possible to recycle two (or even three) sensors so that each sensor is exposed to the gas for at most half of the time and the fresh air for the other half. restore.
2. How long does the gas sensor need to be recalibrated: The length of the initial calibration and recalibration depends on many factors, including the sensor's operating temperature, humidity, pressure, which gas is exposed, and the time it is exposed to the gas. length. Solution: However, most products can provide very stable signals for a long time. The use of gas sensors only requires regular calibration, such as once a year. Calibration work may need to be relatively frequent if the sensor requirements are extremely high or for safety applications.
3. What is the difference between the temperature of the gas itself and the temperature of the sensor: the temperature of the sensor itself determines its minimum display current, and the temperature of the sample being measured has a certain effect on it. The rate at which gas molecules enter the sensing electrode through the pores determines the signal of the sensor. Solution: If the temperature of the diffusion gas passing through the pores is different from the temperature of the gas inside the sensor, it may have a certain influence on the sensitivity of the sensor. Subtle drift or transient current changes may occur before the device is set up.
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