srs QMS Series-Up to 300 amu gas analyzers

srs QMS Series-Up to 300 amu gas analyzers

主要指标与说明QMS series gas analyzers offer an efficient, cost-effective solution for a wide range of applications. These mass spectrometers simplify the task of on-line process monitoring, analysis of gas species, leak detection, and troubleshooting.The QMS system can continuously sample gas at flow rates of several milliliters per minute. The inlet can be equipped to sample at pressures from 1 bar to 10 mbar. Data is acquired continuously, as opposed to batch sampling which is employed by gas chromatographs.

ProductsPrices & OrderingDownloadsSupportContact Us Search GoHome > Products > Vacuum Instruments > QMSHigh Pressure Gas Analyzer QMS ... from $23,000QMS Series-Up to 300 amu gas analyzers (Click to enlarge)QMS Series Atmospheric Pressure Gas AnalyzersQMS series gas analyzers offer an efficient, cost-effective solution for a wide range of applications. These mass spectrometers simplify the task of on-line process monitoring, analysis of gas species, leak detection, and troubleshooting.On-Line MonitoringThe QMS system can continuously sample gas at flow rates of several milliliters per minute. The inlet can be equipped to sample at pressures from 1 bar to 10 mbar. Data is acquired continuously, as opposed to batch sampling which is employed by gas chromatographs. The QMS has a fast response time of less than 0.5 seconds. Complete spectra can be recorded in seconds, and individual masses can be measured at rates up to 25 points per second pact, User-Friendly DesignAn advanced quadrupole mass spectrometer design, coupled with state-of-the-art pumping technology, allows the entire system to be integrated in a small, transportable package. The sampling inlet valves and pumps can be controlled from the front panel. Operation is easy and does not require a detailed understanding of the quadrupole or the pressure reducing inlet. Since the pumps contain no oil or other liquids, gravity has no effect on them which allows the unit to function either standing upright or laid on its side. Capillaries are used as sampling probes and are available in several materials and sizes for different applications.Principle of OperationThe QMS uses a two stage pressure reducing inlet to sample gases at high pressure. This allows the use of a residual gas analyzer (which operates at high vacuum) as the detector. Different capillaries permit the system to sample at higher or lower pressures. A large flow is drawn through the capillary which drops the pressure three decades. A hybrid turbomolecular/drag pump draws a small amount of gas through an aperture, which reduces the pressure to about 10-6 Torr, while most of the flow is bypassed directly to a diaphragm pump. Solenoid valves control the gas flow. The entire system is controlled by a microprocessor which ensures correct operation of the pumps and valves. The software manages the spectrometer and acquires data in a choice of six different modes. An optional high-vacuum 2.75" CF port provides direct access to the RGA.

Bypass Flow ConfigurationThe bypass flow stream and the sample flow stream are recombined at the diaphragm pump, which makes it possible to use only one backing pump. This contributes to the system’s small size. The bypass flow configuration is also critical to the fast response time of the QMS. Single-stage pressure reduction with leak valves would lead to extremely small flow rates and unreasonably long sample times. The bypass flow, on the other hand, gives a response time of less than 0.5 seconds from the tip of the capillary to the RGA chamber.Windows SoftwarePressure vs. Time modeAnalog modeThe QMS systems are supported with a Windows software package that runs on PCs. The intuitive graphical user interface allows measurements to be made quickly and easily. Data is captured and displayed in real-time or scheduled for acquisition at specified time intervals. Features include analog and histogram scan modes, pressure vs. time plots, leak detection, annunciator mode, gas library, audio and visual alarms, and comprehensive on-line help. Probe parameters can also be controlled and monitored through a high-level ASCII command set which allows easy integration into user control programs. A standard RS-232 interface is used as the data link to the host computer. A LabVIEW driver is also available.QMS Series Atmospheric Pressure Gas AnalyzersInletType Capillary available in stainless steel, and PEEKFlowrate 1 to 10 milliliter per minute at atmospheric pressurePressure 10 mbar to greater than 1 bar (depending on capillary)Mass SpectrometerType QuadrupoleDetector Faraday cup and electron multiplierRange 100, 200 or 300 atomic mass units (amu)Resolution Better than 0.5 amu at 10 % of peak heightDetection limit Less than 1 ppmOperating pressure 5 × 10-6 mbarConnectionsInlet 1/4" Ultra-Torr? fittingComputer interface RS-232C, 28800 baud, DB9 connectorSoftware RGA Windows applicationSystemHigh vacuum pump Hybrid turbo-molecularDiaphragm pump Advanced low pressureMaterialsConstruction SS304 and SS316Insulators Alumina, ceramicSeals Viton?, buna-N, and nitrile butyl rubberMiscellaneous Aluminum, Tygon?

GeneralStartup time 5 minutes from full stopMax. ambient temp. 35 °CPower requirement 110 VAC @ 60 Hz or 220 VAC @ 50 Hz (not field selectable)Dimensions 8.0" × 17.0" × 24.0" (WHL)Weight 75 lbs.Warranty One year parts and labor on defects in material or workmanship. Pump seals and diaphragm warranted for 90 days.Power requirement 24 VDC @ 2.5 amps. Male DB9 connector. Optional 110/120/220/240 VAC adapter.Weight 6 lbs.Warranty One year parts and labor on defects in materials and workmanship

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