VOC detector PID photoionization detector types

Description :

　　Characteristics of VOC detector:

　　1. Continuous sensitive measurement: PID can detect organic compounds in real-time at concentrations as low as PPb (parts per billion). Specially suitable for the health and safety needs of modern petrochemical, labor hygiene, environmental monitoring and other departments;

　　2. Fast: PID has a fast response time, usually less than 3 seconds, suitable for quick emergency needs;

　　3. Portable measurement: The instrument is small in size and light in weight, and can be carried to any location that needs to be tested. The built-in powerful suction pump can suck up the gas to be tested that is difficult for personnel to reach;

　　4. High safety: The instrument is inherently safe and does not require hazardous carrier gases such as hydrogen;

　　5. Wide adaptability: capable of detecting the vast majority of organic substances within the concentration range of 1 ppb to 10000 ppb;

　　6. Non destructive measurement: Since PID only ionizes organic matter, it will recombine after the organic components leave the detector. Therefore, users can use the powerful suction pump of PID for sampling operations and further laboratory analysis of the tested samples;

　　7. Sensors will not be poisoned: Unlike most other principle based detectors or sensors, PID detectors that use optical principles will not be damaged by high concentrations of the tested substance.

　　VOC detector is a commonly used detection instrument, which has the advantages of measurement, stable performance, flexible use, and easy maintenance. It is particularly suitable for personal safety protection and on-site VOC detection.

　　VOC detector function:

　　1. Monitor the concentration of gases in the environment or confined spaces and sound an alarm;

　　2. Equipped with self calibration function and zero point calibration function, making gas monitoring more accurate and reliable;

　　3. One click factory reset function can eliminate the trouble of misoperation;

　　4. Equipped with temperature and pressure compensation, it can compensate for gas concentration under different temperature and pressure environments;

　　5. Two level sound and light alarm, alarm points can be set by oneself;

　　6. Large capacity lithium polymer rechargeable batteries;

　　7. Pump suction sampling method, with adjustable suction force of the pump;

　　8. The shell is made of high-strength special engineering plastic, which is anti slip, waterproof, dustproof, and explosion-proof;

　　9. Fine aluminum alloy suitcase.

　　The use of VOC detectors in open spaces:

　　In an open workshop, a portable VOC detector is used to display the VOC concentration on site at any time, anywhere. Some portable VOC detectors are also equipped with vibration alarm accessories to prevent the alarm sound from being inaudible in the presence of noise.

　　The use of VOC detectors in confined spaces:

　　When using VOC detectors in confined spaces, attention should be paid to flammable and harmful gases, such as reaction tanks, sewers, ship cargo holds, underground facilities, and other environmental environments. Before entering a sealed environment, testing must be conducted. In this situation, it is necessary to choose a detector with a suction pump, because in a closed environment, due to the lack of air circulation, gas diffusion is slow, and the gas distribution in different parts varies greatly. For example, combustible gases have a lighter mass;

　　Most of them are distributed in the upper layer of enclosed spaces, where carbon monoxide has a mass similar to air and is generally located in the middle layer of the enclosed space. Heavier gases such as hydrogen sulfide are located at the bottom of the enclosed space. In addition, considering the hazardous gases in enclosed spaces, a built-in suction pump should be used for non-contact long-distance detection of multiple gases. At the same time, it is easy to carry and does not affect workers' work, so as to ensure the safety of personnel entering enclosed spaces;

　　In addition, after entering a sealed environment, it is necessary to continuously detect the internal gas to prevent leakage and changes in hazardous gas concentration caused by temperature and other factors.

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• VOC detector