The photoionization detector VOC Pro is designed for the rapid and accurate detection of volatile organic compounds in the working environment of premises, in fire hazardous areas, protected sites, and other locations.
The photoionization VOC Pro detector allows for the determination of the concentration of hazardous organic compounds using the photoionization method for air samples in the workplace. The device uses a lamp with an energy of 10.6 eV to ionize chlorinated organic compounds. The maintenance of the ultraviolet lamp is very simple and does not require any special equipment. The large display allows for quick and accurate identification of the compound type, and the high vacuum pump used in the device enables measurements to be taken in minimal time. The wide operating range of the instrument, from 0.5 to 2000 ppm, makes it suitable for use in various industries. The device can be used in extreme production conditions. The ergonomic design of the detector allows operation even while wearing protective gloves and chemical protection gear. The detector has European approvals for explosion protection: UL: Class 1, Division 1, Groups A, B, C, and D.
Application area of the device: assessment of workplace safety, hazardous industries, description of areas of leaks of toxic and hazardous substances, determination of vapor concentrations from new building materials in enclosed spaces, as well as identifying leakage points.
What is a PhotoIonization Detector used for?
Memory.The received data can be saved automatically at a specified interval or manually. The memory capacity is 15,000 values. Data transfer to the computer is performed via the RS232 port.
Data recording modes:Logging Off: prolonged measurements in real-time modeTag Mode: received data is saved under a specific number and name, allowing for the identification of large amounts of dataInterval: data recording at a specified interval.
Determined compoundsAromatic compounds: benzene, toluene, naphthaleneUnsaturated hydrocarbons: acetylene, ethylene, 1,3-butadieneChlorinated hydrocarbons: vinyl chloride, chloroform, trichloroethylene, methylene chlorideKetones: acetone, methyl ethyl ketone, methyl isobutylene, methyl isobutyl ketoneAlcohols: methanol, ethanol, isopropanol, n-butanolOrganic fuel: gasoline and kerosene.
What types of gases can photoionization detectors measure
how does photoionization detector work
The photoionization sensor is designed to measure the mass concentration of harmful substances, including vapors of oil and petroleum products in the working zone air. During operation, the sensor becomes contaminated due to the deposition of dust on its surface, condensation of oil vapors, as well as petroleum products and products of their ionization by ultraviolet radiation, which reduces its operational life. To extend the operational life of the sensor, its UV lamp and ionization chamber are made replaceable. The design of the sensor and the ionization chamber ensures protection against improper assembly, prevents the displacement of the ionization chamber relative to the housing when the sensor is subjected to mechanical load and changes in ambient temperature.
The portable photoionization detector (PID) INFICON 2020ComboPRO is a versatile analytical device designed to determine the concentrations of a wide range of volatile organic compounds (VOCs) in the air for environmental monitoring and to ensure industrial safety. Developed by professionals, the 2020ComboPRO device is compact, lightweight, simple, and easy to use.
Types of detectors in gas chromatography
Among the existing types of detectors used in gas chromatography, the most common are the flame ionization detector (FID) and the thermal conductivity detector (TCD), also known as the thermoconductometric detector. Other detectors typically have selective sensitivity only to certain types of substances and are used to operate within narrow concentration ranges.
You will find a more detailed description of the operating principles of detectors on the internet. Here, we will provide brief information in the form of a cheat sheet, although we will delve a little deeper into some types of detectors, as there is very little reference information about them on Russian-language sites.
RAEGuard 2 PID is a stationary photoionization detector for the determination of volatile organic compounds, featuring a graphical display and local sound alarms, as well as a status light indicator. The keyboard interface with magnetic control in an explosion-proof housing allows for on-site calibration of the detector and adjustment of operating parameters. RAEGuard 2 PID uses an intelligent processor platform and digital sensor technology capable of performing autonomous calibration and self-adaptation to the environment. In addition to this, the FID module can easily be removed from the hazardous area for calibration or maintenance.
Photoionization gas analyzers Kolion-1 for monitoring the maximum allowable concentrations of harmful substances in the air of the working zone.
Most air pollutants in industry are harmful and explosive substances, and in accordance with current regulations and standards, their concentration in the air is subject to mandatory control. The qualitative composition of pollutants is quite diverse. The range of concentrations that need to be measured is determined by the maximum allowable concentrations of air in the working area (MAC) and the explosive limits (EL) of the controlled substance, which for various substances falls within the range from fractions of mg/m3 (MAC) to units of % vol. (EL). Currently, a large number of gas analyzers are produced for such control, differing in operating modes, sampling methods, dimensions, weight, etc. At the same time, the choice of detectors that determine the main characteristics of the operation of gas analyzers – controlled substances, measurement range, stability, is quite limited. To date, the main detection methods used in gas analyzers for monitoring the air in the working area, are thermocatalytic, calorimetric (indicator tubes), electrochemical, non-dispersive infrared (IR), photoionization.
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