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COMMERCE BUSINESS DAILY ISSUE OF DECEMBER 20,1999 PSA#2499NOAA/Systems Acquisition Office (SAO), 1315 E. W. Highway, Mail Code
SAOX2, Silver Spring, MD 20910 66 -- ALL-WEATHER PRECIPITATION ACCUMULATION GAUGE SOL 52-SPNA-0-00014
POC Annette E. Stevens, Contract Specialist, 301-713-2110 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 gauge
shall be linear over the entire measurement range, with an accuracy of
plus or minus 4 percent or plus or minus 0.02 inch, whichever is
greater, when compared to a standard National Weather Service 8-inch
non-recording precipitation gauge installed at the standard height with
a National Weather Service Alter shield.; (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 degrees F. Furthermore, the gauge 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 exposure 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 Availability: (a) Mean time between
hardware failure, greater than or equal to 10,000 hours; (b) Mean time
between erroneous or marginal reports, greater than or equal to 8,760
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. The Government strongly desires to
not use any chemical compounds to retard evaporation, and gauges
requiring such may be considered unacceptable. If the use of antifreeze
is required for the gauge to comply with performance requirements
during events containing solid precipitation, the mixture shall be a
phosphate-free, propylene glycol (PG) which is "Generally Recognized as
Safe" by the U.S. Food and Drug Administration. Vendors may request a
copy of the complete statement of work (including design requirements)
from the contact person within 14 days after CBD publication. Posted
12/16/99 (W-SN409256). (0350) Loren Data Corp. http://www.ld.com (SYN# 0240 19991220\66-0005.SOL)
66 - Instruments and Laboratory Equipment Index Page
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