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UltraRAE Specific Compound Monitor
- 3-16 times faster analysis time - accuracy - excellent range and linearity - internal pump - small, hand held monitor - low cost of analysis - lower cost of ownership - minimal interference
UltraRAE 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. Simply insert a RAE-Sep tube and get eigher a total vapor reading or a specific compund reading, such as benzene in petroleum vapor or methylene chloride in organic solvent vapors. Applications include tank entry pre-screening during petrochemical platnt maintenance, hazardous material response, marien spill response, and refinery down-stream monitoring.
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Principle of Operation
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.
Additional Technical Notes
TN 133 - Methylene Chloride-Specific Measurements using the UltraRAE (.pdf) TN 127 - Benzene-Specific Measurements in Petroleum Hydrocarbons using the UltraRAE (.pdf)
Users of UltraRAE for benzene
- Military - Pipelines - Crude oil production - Transportation - tankers, railways, aircraft, barges - Refineries & refinery contractors - Petroleum user - gasoline, diesel, jet fuel - Steel - light hydrocarbon by-product from coking - Petrochemical plants - Benzene solvent users - Environmental companies - Hazadous Material (Hazmat) Response Teams
Basic Unit
- UltraRAE unit PID detector - Rechargeable battery pack - 2 x (5 pack) RAE-SEP benzene tubes - ProRAE-7200 Software and computer interface cable - AC/DC charging adapter - Operation and maintenance manual
PGM-7200 Kit
As above plus: - Calibration gas, 34 liter cylinder - Regulator with Teflon tubing - Tedlar bag - Organic vapor zeroing kit - Hard case |