NOAA/Systems Acquisition Office (SAO), 1315 E. W. Highway, Mail Code SAOX2, Silver Spring, MD 20910

66 -- ALL-WEATHER PRECIPITATION ACCUMULATION GAUGE SOL 52-SPNA-7-00013 POC Thomas D. Genovese, Jr., Contracting Officer, Annette E. Stevens, Contract Specialist, (301-713-2110) E-MAIL: AnnetteS@SAO.NOAA.GOV, AnnetteS@SAO.NOAA.GOV. The NOAA Automated Surface Observing System (ASOS) program has a need for an All-Weather, Liquid and Frozen Precipitation Water Equivalent Accumulation Gauge. An alternative to tipping bucket technology is sought which meets the following performance requirements: (1) Range (i.e., measuring capacity) greater than or equal to 40 inches (mandatory), liquid water equivalent, unattended (without user intervention); (2) Reporting Resolution of 0.01 inch. (3) The accuracy of the gauge shall be linear over the entire operational range for temperature and wind, and shall meet the following requirements for all precipitation rates (R): 100 percent plus or minus 4 percent or plus or minus 0.02 inch, time period equals event time period; (4) The gauge shall not report any change in accumulation in the absence of precipitation. (5) The gauge shall be fully compliant with accuracy requirements over the following operational temperature limits: (a) low temperature operational, minus 60 degrees F; (b) high temperature operational, plus 120 degree F. Furthermore, the shall survive exposure to the following temperature extremes with no damage: (c) low temperature withstanding, minus 80 degrees F; (d) high temperature withstanding, plus 130 degrees F. (6) The gauge shall be fully compliant with accuracy requirements over the following operational wind limits: (a) Operational steady wind, up to 30 knots; (b) Operational wind gust, up to 46 knots. Furthermore, the gauge shall survive exposures to the following wind extremes with no damage: (c) Withstanding steady wind, up to 73 knots; (d) Withstanding wind gust, up to 125 knots. (7) Reliability, Maintainability, and Availabilty: (a) Mean Time Between Failure, greater than or equal to 4,392 hours; (b) Periodic Maintenance interval, not less than 90 days; (c) Mean Time To Repair, less than or equal to 30 minutes; (d) Availability greater than or equal to .9998861. Vendors may request a copy of the Statement of Work (including design requirements) from the contact person within 2 weeks of CBD issuance and should respond within 6 weeks of CBD issuance. (0164)

Loren Data Corp. http://www.ld.com (SYN# 0305 19970617\66-0010.SOL)