Oxygen is an indispensable element of human survival. It often needs to detect oxygen concentrations in various scenarios such as various industries, fire safety, etc., but with the development of technology, the method of detecting the oxygen concentration in the environment is becoming increasingly increasingly. The more advanced and more advanced.
Oxygenometer (oxygen analyzer): Instruments to determine the unit oxygen pressure division by electrochemical or spectrum analysis or ultrasonic wave principle. It can be used for the measurement of oxygen concentration in the medical undertakings, and the respiratory testing of plant breathing and food and fruits and vegetables in the agricultural field. How much is the oxygen concentration of oxygen detector? Let ’s take a look at the application of the oxygen sensor in the oxygen meter oxygen concentration detection.
The normal content of oxygenometer oxygen should generally be between 19.5 and 23 %VOL, and the specific standard value should be 20.9 %VOL. In other words, the volume score of oxygen in the air should be within the above interval, and the detected value is lower than or higher than the range, and the oxygenometer should be able to report to the alarm in time and accurately.
The different measurement range of the oxygen concentration detector on different uses is as follows:
Used for human safety testing to prevent people with hypoxia and use the most common measurement range.
For industrial boiler exhaust gas discharge, the combustion efficiency indicator detection, monitoring the oxygen content index in the burning furnace, generally this application requires the oxygen detector of the principle of high temperature oxidation.
The purity test of oxygen oxygen machine, the detection of oxygen -absorbing concentration in the medical industry, these are the measurement range of a high concentration of oxygen detector
This measurement range is mostly used for industrial pipeline exhaust gas treatment. The purpose of the purpose of controlling the oxygen content should not exceed the standard. Otherwise, it is easy to cause explosion accidents caused by the catalytic effect of oxygen, so the control of oxygen content is important.
This field of detection in trace oxygen is mainly applied to a very vacuum or high -risk industrial field, which is very high -standard for equipment.
This extremely high -required oxygen content monitoring standard has high accuracy of the overall oxygen detector. What is the concept of this measurement range? PPM is a proportional unit of one millionth. All this is an extremely small concentration. The measurement range of this trace oxygen is also used in the detection of high -purity nitrogen fields. In order to verify the purity of nitrogen, the oxygen content in nitrogen is detected to determine whether the purity of nitrogen is 99.999%, which is the popular 5 9 The field of high -purity nitrogen application.
It can be seen that the oxygen concentration in the normal environment is between 19.5%-23.5%, and people can live normally. However, there are many places that are in the state of oxygen -rich or hypoxia to threaten life and health, and require the concentration value of oxygen detection in the environment. For example, in the well, mine, tunnel and other places belong to a susceptible environment, and the oxygen detector is required for monitoring. In places involving oxygen production, storage and transportation, and use, the concentration of oxygen needs to be controlled to prevent the explosion of combustible gas. The oxygen concentration detection of oxygen measuring instrument is recommended to use extreme current-type oxidation oxide sensors-SO-E2-250.
Extreme current-type oxidation oxidation oxygen sensor-SO-E2-250 is oxygen ion because the carrier of the current in the oxide electrolyte is oxygen ion, so when the voltage is applied to the oxidation electrolytic groove, the oxygen is drawn to the anode through the oxidation tray. If the electrolyte cathode is added with a hole with a hole, the rate of oxygen flow to the cathode will be limited. With this rate restrictions, as the voltage applied gradually increases, the current in the electrolyte will reach saturation. This saturated current is called extreme current, which is proportional to the oxygen concentration in the surrounding environment.
The advantages of the extreme current type oxidation oxygen sensor SO-E2-250:
The measurement range is wide, 10 ppm ~ 96%oxygen
Multiple models are linear characteristics
Sensor signal is small to dependence on temperature
Cross -sensitivity is low
In most cases, you only need to perform “single -point calibration” once