Portable gas measuring equipment, even portable gas detectors, are devices used to detect gas concentrations in the environment. The following is a detailed introduction to portable gas measuring equipment:
1、 Working principle
The working principle of portable gas detectors is mainly based on the selective absorption of infrared radiation by different gases. The instrument has two built-in analysis edges and shares a gas chamber for cross analysis of signal spectra. One side serves as a reference signal, and the other side is the signal for measuring the gas. By subtracting the two through a digital logic circuit, the signal change of the measured gas is obtained, and the change in signal concentration represents the gas concentration value. Then convert the signal into a voltage signal, amplify it with gain, and linearize the data through a microcomputer. Finally, the accurate concentration of the gas is displayed on the screen.
2、 Main features
Portability: The portable gas detector is compact in size, lightweight, and convenient for users to carry around, suitable for various on-site detection scenarios.
High precision: Designed and manufactured using advanced gas filter correlation technology (GFC) and fine absorption spectroscopy, with high resolution and low detectable 0.1PPM (0-50PPM).
Real time detection: It can continuously and real-time display the concentration of gases on site, helping users to understand the environmental conditions in a timely manner.
Multifunctionality: Some portable gas detectors have multiple detection functions and can detect various gases such as flammable gases, toxic and harmful gases, etc.
Long lifespan: The instrument adopts a high-performance rechargeable battery pack inside, which can work for more than 6 hours and can be connected to an external AC power source. It can also be charged during operation.
3、 Application Fields
Portable gas detectors are widely used in industries such as steel, petroleum, chemical, underground coal mines or underground pipelines, tunnels, metallurgy, pharmaceuticals, and electricity. Specific application scenarios include:
Inspection and detection: During safety and health checks, harmful or flammable gases must be detected.
Equipment detection: After equipment maintenance and replacement, it is more important to detect residual harmful or flammable gases.
Entry inspection: When personnel enter hazardous material isolation areas, sewers, cable channels, or perform equipment operations, harmful gases or liquid vapors should be detected.
Emergency testing: In the event of abnormal situations or accidents at the production site or site, safety and hygiene testing should be conducted on harmful gases or liquids (vapors).
Leak detection: Detecting and alerting for hazardous or flammable gas leaks in equipment pipelines.
4、 Usage and maintenance
Usage: Before using the portable gas detector, carefully read the instruction manual to understand the operation method and precautions of the instrument. Ensure that the instrument is in normal working condition and perform testing according to the operating steps in the manual.
Maintenance: Regularly maintain and upkeep portable gas detectors, including cleaning probes, checking battery levels, calibrating instruments, etc. Ensure that the instrument is in good condition to improve detection accuracy and extend its service life.
In summary, portable gas measuring devices have many advantages and a wide range of application fields. When selecting and using, users should fully understand the characteristics, working principles, and application scenarios of the instrument, and follow the correct operating methods and maintenance requirements.