time of flight mass spctrometers (SDI-TOF-MS-2000)

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Time of Flight Mass Spectrometer On-line time-of-flight mass analyser (TOFMS) providing rapid and sensitive gas analysis for environmental monitoring and research applications. The SDI-TOF-MS-2000 perform measurements over a wide range from ppt to percent concentrations of most ambient gases of environmental interest. Ease of operation and ability to produce stable long-term measurements of the constituents of ambient air makes the equipment well suited to air-pollution monitoring. Gas Inlet System The SDI-TOF-MS instrument is fitted with two selectable ambient air sample inlets: Capillary inlet for rapid (<1 second) high sensitivity analysis of inorganic gases such as CO, CO2, NO, NOx , N2O, Xe, Kr, SO2, O2 and others at less than 1ppm to percent concentrations. Membrane inlet for very high sensitivity analysis of volatile organic compounds at the ppt and ppb level within one minute. Compounds of interest include benzene, toluene, xylene (BTX), trichloroethylene, tetrachloroethylene, methane, ethene, formaldehyde, styrene and most other toxic organic compounds of environmental interest. The Mass Spectrometer The mass resolution and mass accuracy of a TOF-MS can separate common organic and inorganic interferences and more readily identify unknowns. Has a large mass range from 1-2000 amu ensuring that all gases of environmental interest can be detected. The Data System Data is displayed on a PC. Provide the automatic analysis of mixtures that presents the identified sample gas components concentrations in tabular form. The software allows the user to monitor trends in multiple gases over long periods of time. Technical specifications Mass range:1-2000 amu Mass resolution:600 M/dM FWHM at mass 40 Mass accuracy:Within 20 milli mass units of the calculated peak centroids Measuring time:Full mass spectrum in 100msec time slots Dynamic range :6 decades Linearity :Better than 5% Sensitivity: Membrane inlet: Benzene in nitrogen: <1ppb in 1minute Capillary inlet: Benzene in nitrogen: 60ppb in 20s Drift :≤ 0.5% in Ar/N2 ratio over 24 hours Inlet system :Dual membrane/capillary Power supply:100-230 V, max 750 W Interface:Ethernet 100Mb/sec Weight:78 kg Size:870 x 540 x 380 (depth, width, height) mm

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Beijing Care Co.Ltd.

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