At present, some urban’s related departments require mining workers to be equipped with portable gas alarm device and self-help device.The device is equipped with a gas sensor that can automatically detect gases in the well and make alarming when harmful gas content exceeds standard or oxygen is insufficient.
In case of fire or bad air quality, the worker can remove the self-rescuer and open it to block the mouth to save himself.
According to different field environment, workers need to choose different gas alarm detector and gas sensor.
In a confined space, such as waterways, agricultural closed granaries and railways,Tank cars, tunnels and other work places, before workers entry,they must test the air outside the confined spacee. so they must choose the detector with built-in multi function detection device, because the gas distribution and gas type in different place is very different.
Therefore, a gas alarm detector for confined space , should be non-contact, partial detection with multi gas detection function so that to detect different spatial distribution of dangerous gas, and should not affect the work of workers portable instrument.Only in this way, we can ensure the safety of the staff who entering the confined space.
Gas detector, is to detection of gas composition and concentration,it is mostly used for some hazards gas in the mine and other places, greatly reduce the occurrence of possible mining accidents.
The composition of the gases in the mine means a wide range of hazardous conditions, including toxic gases such as carbon monoxide, carbon dioxide, sulfur dioxide, and oxygen deficiency.In some cases, methane may reach explosive levels.
Therefore, at present, in many underground gas detection equipment, different types of gas sensors are installed, such as oxygen sensor, carbon dioxide sensor, carbon monoxide sensor and so on.Complex gas composition and concentration can be detected by replacing different gas sensors
