USDA-ARS-MWA, 1815 N. University Street, Peoria, IL 61604

66 -- RESIDUAL GAS ANALYZER SYSTEM Sol 9-5114-95 due 062195. Contact Point: Rebecca A. Holzinger, Contracting Officer, 309-681-6615. USDA-ARS-MWA in Madison, WI has a requirement for one Residual Gas Analyzer System. Analyzermust have 1-200 AMU mass range; Faraday cup and electron multiplier detector; single thoriated iridium filament or comparable quality filament; open ion source; minimum detectable partial pressure: 5 x 10-14 torr; will operate at room temperature up to 35 degrees C; bakeout temperature greater than 250 degrees C; controlled by IBM PC-compatible computer via interface card or RS-232 serial port; at least one relay or digital outputs capable of running a relay for control of a solenoid based on gas composition; and routine maintenance and filament replacement performable by user. Inlet system for the RGA must have mobile frame or cart for RGA, vacuum pumps, inlet; turbomolecular pump, minimum 50 liters/sec; at least one mechanical (rotary vane) vacuum pump with a minimum total capacity of 1.0 cfm and with exhaust mist eliminator and auto vent valve; RGA chamber with ports for associated pumps, inlet, RGA; inlet with minimum of 4 capillary lines for sampling at atmospheric pressures with manual switching; power supplies as needed for the RGA and pumps; complete set of fasteners and gaskets for system. Software for RGA control must be MS-DOS 6.0 compatible; capable of monitoring a minimum of 8 gases with time; capable of setting alarms and triggering a relay for high or low levels of a particular gas; has a library of common gases; spectrums from library can be compared to collected spectrums; add gases to library; either software or hardware safeguards which shut off RGA filament current when high pressures are encountered; capable of outputting data to files that can be imported into Lotus 1-2-3 o compatible; and have PC based spreadsheets. Potential bidders shall submit written request for RFP 9-5114-95 either by mail or by FAX (309) 681-6680. Request for Proposals will be available on or about May 22, 1995. All responsible parties may submit a proposal which will be considered by the Agency. (121)

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