Loren Data Corp.

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COMMERCE BUSINESS DAILY ISSUE OF MARCH 26,1997 PSA#1810

DOC; Mountain Administrative Support Center; Acquisition Management Division; 325 Broadway MC3; Boulder, CO

66 -- TOXIC/PYROPHORIC/FLAMMABLE GAS DETECTOR SYSTEM SOL 814704153BJ POC B J Roberts (303) 497-3799 E-MAIL: NOAA; MASC Acquisition Management, Joyce.J.Mills@noaa.gov. The Electromagnetic Technology Division of NIST requires a networked, modular toxic/pyrophoric/flammable gas detection system to monitor a laboratory containing a bank of LPCVD furnaces. The system must be flexible, easily expanded to handle additional gasses and monitoring points, and networked. For safety and accuracy, we require a system which places sensors directly at the sampled space and which does not rely on sampling pumps or sampling tubes. We require three (3) sensors each for SILANE, DICHLOROSILANE, AMMONIA and HYDROGEN. One of each sensor type will be mounted on the individual gas cabinet, one of each sensor type will be mounted to sample furnace room air, and one of each sensor type will be mounted to sample a common exhaust duct. Duct and cabinet mounted sensors shall be qualified for use in high air flow environment (few hundred CFM airflow). The sensor head electronics shall be self-checking, self-calibrating when sensor cell is replaced, and interchangeable between different sensor types. The sensors shall be capable of continuous, direct measurement of specific gas species. Sensitivity levels shall cover the range of 1-2 times the TLV for toxics and pyrophorics and 0.2-0.7 times the LEL for hydrogen. It shall be possible to expand the system simply, both in terms of points sampled and different gasses (particularly PHOSPHINE). The system shall be provided with all required power supplies, networked output relays, and interface electronics and configured to provide the following functionality. (a) Relays/junction boxes to signal: (1) Low level detect alarm enable, (2) High level detect alarm enable, (3) Output to building fire alarm system (High and Low level alarm for each sensor and Trouble for each sensor), (4) Any sensor in alarm signals gas shutdown, and (5) Any sensor in alarm signals "shut down tool". (b) RS232 interface electronics and basic network configuration software to allow connection of detector system to PC (PC and visualization software will be provided by NIST). No RFQ package will be made available. Responses are due April 7, 1997. For technical questions, call James Beall 303-497-5989. (0080)

Loren Data Corp. http://www.ld.com (SYN# 0330 19970326\66-0002.SOL)


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