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PQ100 Portable PM10 / TSP / PM2.5 |
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Applications
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The PQ100 is the only truly portable PM10 sampling unit on the market today. With microprocessor control plus mass flow control, programmability and download/storage capacity, this advanced system of pump and accessories are designed for any sampling application that requires portability plus regulatory compliance. Because of the mass flow sensor, no flow corrections are needed. The units are supplied with full calibration to engineering standard conditions at the usual flow rates of 2, 10 and 16.7 lpm. Additional calibration data (up to 240 sets of conditions) can be stored for instant access. Calibration is easily confirmed or altered in the field using a bubble flow meter. The unit display gives elapsed time, total sample volume, battery state and instantaneous flow rate. The built-in real time clock and associated microprocessor allows future run times to be entered. This microprocessor-controlled air sampling pump is designated specifically for PM10 sampling. The unit will operate from its internal battery for 24 hours, but an auxiliary, easily interchangeable battery greatly extends run time. The built in software permits programming of start and run time as required. Air flow is rigidly controlled to ±2% precision with state-of-the art mass flow sensor. All relevant operations information such as date, time, flow rate and total flow are displayed. An RS232 port affords downloading of information plus remote access. During the data transfer, relevant data such as station number, job code and operator name may be entered. After filter analysis, the filter weight change may be entered and the system automatically calculates the air concentration corrected to EPA standard conditions. The real time clock permits sample start at any future time. Universal PQ/TSP Sampling InletThe publication of an extensive multi year European aerosol study* of inlet performance confirms the utility of the US EPA louvered inlet. This is essentially the top half of the McFarland Texas A&M Federal Reference Method (FRM) inlet without the impactor and water excluder sections. The Inlet (P/N PQTSP) should be utilized with a minimum of a 19.5” long inlet sample tube (P/N L20) to avoid bluff body effects. * L Kenny, et al. “Aspiration and sampling efficiencies of the TSP and Louvered particulate matter inlets”, J. Environ. Monit, 2005, 7 481-487. CalibrationWhen using a specific filter and flow rate (i.e. 47mm Teflo at 16.7 lpm) this calibration will be maintained in memory indefinitely. However, calibration should be checked on a yearly basis. Two hundred and forty calibration locations (from 2.0 to 25.0 in 0.1 lpm increments) can be programmed into this unit. When you calibrate the above flow rate/filter, and should you choose to correct for engineering standard conditions (760mm Hg at 20°C), then every sample you run thereafter at 16.7 lpm using the 47mm Teflo will also remain constant. The finest samplers deserve the finest calibrators. The BGI deltaCal and tetraCal® (formally triCal) are NIST traceable and the only electronic devices usable down to -30° C. Rack/Support AssemblyThis assembly is designed to be rigid and easier to use since the instrument panel is supported at waist height. The legs use the same "snap and lock" assembly developed for the PQ200 (and are, in fact, interchangeable). A large water trap has been included in the new specification for deployment of the instrument in extreme climates. DownloadingThe data from the PQ100 may be downloaded to any IBM type computer system (5.25 and 3.5 floppy disks are provided). Any IBM compatible PC running MS-DOS 2.1 or higher with 1 floppy drive and at least 512K of memory is usable. One serial communication port is also required. The HP100LX palmtop computer is also usable with our accessory memory card and adaptor cable. The software also includes a corrections program which simplifies calculating the flow rate to EPA standards. After filter analysis, the downloaded information may be reaccessed and the program will automatically calculate the concentration to EPA standard conditions of 760mm of Hg and 25°C. Solar PanelThe BGI Solar Panel accessory for the PQ200 will be extend its operational time range from 24 hours to an indefinite period depending upon the amount of ambient sunlight available in the region of use. As a practical matter the panel with the ballast battery will provide a minimum of 10-14 days of operation with only minimum ambient light. When interval sampling on three or six day cycles is contemplated continuous operations far from a source of power are achievable. Specifications
Copyright © 2006 by BGI / Modified:
Tuesday, December 8, 2009
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