Learn more about the technical principles of VOC gas detectors
VOC gas detector is a device used to detect toxic and harmful organic gases. It is used in industry to ensure the standardization of gas emissions from enterprises and meet national environmental protection requirements. So what is the working principle of this instrument? Let's talk about it in detail below.
In fact, VOC gas detectors have two working principles, one is a photoionization detector and the other is a flame ionization detector. Compared with the other detection principle, the photoionization detector has higher accuracy, but the procurement and maintenance costs are higher, making it inconvenient to carry and unable to provide data at the time. The photoionization detector generates ultraviolet light by using an ion lamp to irradiate or bombard the target gas. When the target gas absorbs enough ultraviolet energy, it will be ionized. By measuring the small current generated by gas ionization, the concentration of the target gas can be well measured.
Product features of VOC gas detector:
Accurate measurement: Most large-scale VOC testers on the market are very inaccurate when detecting small data. For example, a detector with a range of 2000PPM may not accurately detect values within 100PPM, and may not respond within 20ppm. The 200ppm range detector is very inaccurate when detecting 0.01~10PPM. Even undetectable. The PV6001 uses a 24 bit precision ADC foreign chip, and with some common planning, even with a 2000PPM sensor, it can accurately measure VOC gases within 0.1-10PPM, greatly improving the reliability and accuracy of the VOC gas tester.
Inspection form: Many companies have multiple workshops that require VOC detection, using traditional VOC detectors that require manual and note taking of each measurement result; PV6001 adopts Microsoft Windows intelligent handheld system channel, with strong software functions that can be directly used on handheld devices
Policy spirit
Body and CF coefficient: Built in CF coefficient, TWA, STEL values for over 180 VOC gases It is also possible to customize the mixing of VOC gases and actively select alarm values for multiple gases. Alarm threshold: Based on the policy gas, TWA STEL is actively calculated and selected, and a first level alarm and a second level alarm are generated.
Air is the source of life, and all animals, plants, and humans cannot do without it. With the development of industry, humans continuously emit harmful substances in production and life, polluting the air and increasing harmful components in the air. These harmful gases can have serious impacts on human respiratory, immune, nervous, and hematopoietic systems, leading to various diseases. In recent years, most cities and regions across the country have been shrouded in haze, and the quality of the atmospheric environment has become increasingly urgent. Prevention and control of air pollution have become increasingly important. Gas monitoring is the foundation of environmental protection work, and authentic and effective environmental monitoring data is the support and guarantee for environmental decision-making and management.
