O2 gas detector

O2 gas detectorThe gas detector includes a sulfur hexafluoride detection unit, an oxygen detection unit, and a communication unit. Infrared laser detection is used to detect sulfur hexafluoride, overcoming the disadvantages of short service life and poor stability; The oxygen detection unit adopts sensors imported from the UK, with high measurement accuracy and stable performance; The temperature measurement part adopts a digital output temperature module, which has the characteristics of high accuracy and good repeatability. In summary, the gas detector can monitor the concentration, oxygen content, and temperature changes of SF6 gas in the environment in real time and online, and upload the detected data through the RS-485 bus.

O2 gas detector

Fixed gas detection probe:

This is a commonly used detector in industrial equipment and production processes. It can be installed at specific detection points to detect specific gas leaks. Fixed detectors are generally two-piece, with a detection head composed of sensors and transmitters installed as a whole on the detection site, and a secondary instrument composed of circuits, power supplies, and display alarm devices installed as a whole in a safe place for easy monitoring. Its detection principle is as described in the previous section, but it is more suitable for the continuous and long-term stability required for fixed detection in terms of process and technology. They also need to be selected based on the type and concentration of the gas on site, and attention should be paid to installing them in specific areas where the gas may leak, such as selecting the most effective height for sensor installation based on the specific gravity of the gas, and so on.

B) Portable gas detector:

Due to its convenient operation and compact size, the portable instrument can be carried to different production sites. The electrochemical detector is powered by alkaline batteries and can be used continuously for 1000 hours; The new LEL detectors, PID and composite instruments use rechargeable batteries (some have already adopted memory free nickel hydrogen or lithium-ion batteries), which allow them to work continuously for nearly 12 hours. Therefore, as such instruments are increasingly being used in various factories and health departments.

If this type of instrument is used as a safety alarm in an open environment, such as an open workshop, a portable diffusion gas detector can be used because it can continuously, real-time, and accurately display the concentration of toxic and harmful gases on site. Some of these new instruments are also equipped with vibration alarm attachments - to avoid audible alarms in noisy environments, and computer chips are installed to record peak values, S (15 minute short-term exposure level), and TWA (8-hour statistical weighted average) - providing specific guidance for worker health and safety.

If entering a confined space, such as reaction tanks, storage tanks or containers, sewers or other underground pipelines, underground facilities, agricultural enclosed grain warehouses, railway tankers, shipping cargo holds, tunnels, etc., personnel must undergo testing before entering, and testing must be conducted outside the confined space. At this point, it is necessary to choose a multi gas detector with a built-in sampling pump. If there are multiple gases in the environment, choosing a composite gas detector may achieve twice the result with half the effort.

C) Composite gas detector

The composite multi gas detector can be equipped with multiple gas detection sensors on one instrument, so it has the characteristics of small size, light weight, fast response, and simultaneous display of multiple gas concentrations. More importantly, the price of a composite multi gas detector is cheaper than that of multiple single diffusion gas detectors, and it is also more convenient to use. It should be noted that when selecting such detectors, instruments with separate switch functions for each sensor should be chosen to prevent damage to one sensor from affecting the use of other sensors.