Why do the data detected by oxygen detectors fluctuate?
When users receive a brand new oxygen detector, they are curious and happy, and can't wait to turn it on and use it. But when users find that the detection data fluctuates too much and is not ideal after turning on the device, they will be very angry and directly judge that the instrument has a problem or that the product is of poor quality. Here, we suggest that everyone should not rush when encountering this phenomenon. You can first read the manual. If the introduction in the manual cannot solve the problem, you can consult the manufacturer's technical personnel directly. Oxygen detectors can be divided into two types based on sampling methods: diffusion type oxygen detectors and pump suction type oxygen detectors, each with its own advantages. The diffusion oxygen detector has a flexible detection method, low impact force on the sensor during detection, and a long service life. When operating the pump suction oxygen detector, it is necessary to grasp the dense direction of the gas source and cannot detect in the opposite direction, which affects the detection effect. The detection sensitivity is relatively high, but the service life is relatively short. However, the instruments used in both detection methods are prone to a common phenomenon of unstable detection data. So what are the reasons for this phenomenon? Newly manufactured oxygen detectors may experience varying degrees of zero drift due to different aging times, which is an inevitable phenomenon for all gas security manufacturers. We suggest that users and friends, when you receive a new instrument, regardless of the data displayed on the instrument, first perform a "zero" operation on the instrument. This principle is similar to weighing, if the pointer on an electronic scale does not point to the "0 scale", the weight measured will definitely not be the actual weight, either heavy or light. After the "zero" operation, users need to know the direction of the oxygen source. If they don't know, they first need to understand the air density of oxygen. The molecular weight of oxygen is 32, and the molecular weight of air is 29. Oxygen is slightly heavier than air, so when oxygen leaks, it will diffuse into the air. When using an oxygen detector, it is forbidden to place the instrument in a low or high position for detection. This is the principle of selecting the right position for optimal detection.
