66 -- LASER CEILOMETER SYS

Notice Date

May 8, 2001

Contracting Office

NCANG, 145LGC, 5225 Morris Field Drive, Charlotte, NC 28208-5797

ZIP Code

28208-5797

Solicitation Number

DAHA31-01-B-5001

Response Due

June 15, 2001

Point of Contact

Contracting Officer, Tony A. Cherry, 704-391-4207

E-Mail Address

Contracting Officer (tony.cherry@ncchar.ang.af.mil)

Description

Laser Ceilometer system supporting two senors and digital display unit. The cloud height sensor shall measure cloud heights and the heights of obscuring phenomena aloft up to 25,000 feet. The sensor shall provide an output of three cloud layers representative of the sky conditions when surface visibilities are equal to or greater than 1/4 mile. Under laboratory conditions, the sensor shall provide an accuracy of 100 feet or 5 percent, whichever is greater.Resolution not greater than 50 feet surface to 5500 feet, 250 feet from 5501 to 10000 feet. The sensor will provide a sampling output at least once every 30 seconds. The sampling rate may be reduced to at least one sample every 3 minutes when no hits are detected for the preceding 15 minutes.Eye safety: The cloud height sensor shall be designed to conform to ANSI-Z 136.1, Acessible Emission Limits for Laser Radiation, with class 3b maximum accessible emission level applied to direct viewing without optical instruments(excluding ordinary eye glasses)> Interlock device(s) in the laser power circuit board shall be provided to disable the laser when any doors are open or the cover is removed to prevent inadvertent exposure of the laser emission to the eyes of the technician or others.An air blower or other devise shall be used to reduce the contamination of the sensor optics. A signal shall be generated to indicate the amount of optics contamination, thereby indicating the need for optics cleaning.This to include snow. The ceilometer window shall demonstrate an ability to remain clear of snow under the condition of snow accumulating at a rate of 2 inches per hour for 1 hour at a temperature of 20 degrees F. Ice. The ceilometer window shall remain clear of ice for 60 minutes under conditions of freezing rain with a maximum accretion rate of 1/2 inch per hour radial thickness of clear ice. Output options, sky conditions detected by the ceilometer shall have the capability of being displayed on a digital display over a distance of 2,000 feet utilizing 24 AWG cable.

Record

Loren Data Corp. 20010510/66SOL003.HTM (W-128 SN50L594)