UltraRAE Benzene Specific Monitor

The UltraRAE PGM-7200 is a quick, spot-check monitor, typically used by occupational health, safety and environmental personnel. The combination filter tube and PID remove the disadvantages associated with colorimetric tubes and gas chromatographs.

To use simply insert a RAE-Sep™ tube and get either a total vapor reading or a specific compound reading, such as benzene in petroleum vapor or methylene chloride in organic solvent vapors. Applications include tank entry pre-screening during petrochemical plant maintenance, hazardous material response, marine spill response, and refinery down-stream monitoring.

A photo-ionization detector (PID) is used for broad band screening down to very low ppm levels of volatile organic compounds (VOCs), for example, petroleum or solvent vapors. The UltraRAE not only uses traditional lamps but also a lower energy lamp (9.8 eV) for benzene monitoring (benzene ionization potential IP = 9.25 eV). A 9.8 eV lamp discriminates against other hydrocarbons with higher ionization potentials commonly found in petroleum vapors yet easily detects sub ppm levels of benzene.

To screen for very low levels of potentially toxic VOCs, an empty glass tube is used. To read specific compounds, for example benzene, a patented RAE-Sep™ tube is added. This tube, containing absorbent materials, filters most of the other VOCs, such as toluene, that will interfere with the benzene reading. A RAE-Sep™ tube is simply broken at each end and inserted into the top of the monitor. By pressing the "Y" key, a strong, internal pump draws the air sample through the tube and the final result is shown on the display (after 30 to 75 seconds depending on the compound).

A fresh tube is used for each measurement. These tubes also absorb humidity to allow for a very accurate reading on the UltraRAE. A bar code reader identifies the type of tube inserted. The data-logging feature then records the date and time of monitoring, the tube type, and the concentration. To obtain the accuracy at such low levels and the confidence in your results, we recommend calibration, prior to use. A simple, clean-air zero and span gas calibration takes less than 3 minutes.

Please note that these are technical products. If you have need of training, or local support, please consider purchasing from a local distributor or contact our customer service for more information.