Do you know the advantage of PID photoion gas sensor in VOCs detection?
VOCs, as a key precursor of PM2.5 and O3, is an important inducement of compound air pollution. In addition, its own irritant and toxicity, will also lead to a variety of organisms produce cancer, deformity. Effective data shows that there are many kinds of VOCs, more than 200 of which can be monitored at present.Different VOCs components have different toxicity and carcinogenicity.
Photoion gas sensor PID is a highly sensitive and versatile detector that can detect VOC gases ranging from extremely low concentrations of 1ppb to relatively high concentrations of 6000ppm. Compared with the traditional detection method, it is portable, small size, high precision, high resolution, fast response, can be continuous testing, real-time performance and high security important advantages, can provide real-time information feedback for staff, the feedback can make the testing personnel to confirm that they are not exposed to dangerous chemicals in the safety of the state, ensure the safety of the staff, for the potential leakage accident prevention automatic monitoring alarm, the accident area confirmation aspect also has broad application prospects.
Advantages of PID sensor
High precision
High-precision optical ionization sensors can detect organic gas at PPB level, while general optical ionization gas sensors can detect VOC gas at PPM level, which is more accurate than most commonly used sensors such as infrared sensors.
Non-destructive to detection gas
The photoion sensor ionizes the gas after inhaling it, and the ions formed by the gas molecules form the original gas molecules after discharging, which is not destructive to the original gas molecules.
Fast response
In addition to a period of time when the gas detection system is warmed up after starting up, the photoion gas sensor can respond almost in real time and can be continuously tested under normal working conditions. In the detection of dangerous gases, it is of great significance to protect the health of inspectors.
Although VOCs monitoring in China has taken shape, it still needs a long time to improve.In addition to improving the level of monitoring technology and equipment, relevant scientific researchers should also improve the VOCs evaluation and monitoring technology standard system, improve the level of VOCs monitoring quality assurance and quality control and the level of online monitoring informatization of volatile organic compounds.Through the realization of the existing technology and monitoring needs to match, to provide technical support for China's environmental supervision and prevention measures.