Today we will mainly introduce some issues that need to be paid attention to in the use of space for this portable gas detector.
The first is in an open place: for example, an open workshop uses this type of instrument as a safety alarm, and you can use a diffusion gas detector worn on the body, because it can continuously, timely and accurately display the concentration of toxic and harmful gases on site. Some of these newer instruments are also equipped with vibration alarm accessories to avoid audible alarms in noisy environments, and computer chips are installed to record peaks, STEL (short-term exposure level at 15 minutes) and TWA (statistical weighting at 8 hours). average) to provide specific guidance on worker health and safety.
The second is to enter the confined space: such as reaction tanks, storage tanks or containers, sewers or other underground pipes, underground facilities, agricultural closed granaries, railway tankers, shipping cargo holds, tunnels and other workplaces, before personnel enter, it is necessary to carry out testing, and testing outside the confined space. At this point, it is necessary to choose a multi-gas detector with a built-in sampling pump. Because the gas distribution and gas types of different parts (upper, middle and lower) in the confined space are very different. For example: the specific gravity of combustible gases in the general sense is relatively light, and most of them are distributed in the confined space. The lower part of the space (as shown). At the same time, oxygen concentration is also one of the types that must be detected. In addition, if the volatilization and leakage of possible organic substances in the tank are considered, a detector that can detect organic gases is also required. Therefore, a complete closed space gas detector should be a gas detector with built-in pumping function so that it can detect non-contact, sub-site and multi-gas detection functions to detect dangerous gases distributed in different spaces, including inorganic gases and organic gases. Oxygen detection function It is a portable instrument that prevents hypoxia or enrichment. It is small in size and does not affect the work of workers. Only in this way can the absolute safety of the staff entering the confined space be guaranteed.
Third, after entering the confined space: continuous and inexhaustible detection of the gas components in this space is also required to avoid changes in the concentration of volatile organic compounds or other toxic and harmful gases caused by personnel entry, sudden leakage, and temperature changes.
Fourth: If it is used for emergency accident, leak detection and inspection, it is reasonable to use a pump-type, short response time, high sensitivity and high resolution instrument, so that the location of the leak point can be easily judged.
Fifth: In the environment of industrial hygiene inspection and health investigation, it is very convenient to use instruments with functions such as data recording and statistical calculation, and can be connected to a computer.
