NASA/Glenn Research Center, 21000 Brookpark Road, Cleveland, OH 44135

52 -- LASERVEC DIODE VELOCIMETER. SOL RFQ-3-151289 DUE 061200 POC Dennis D. Pehotsky, Purchasing Agent, Phone (216) 433-2757, Fax (216) 433-2480, Email Dennis.D.Pehotsky@grc.nasa.gov WEB: Click here for the latest information about this notice, http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=D&pin=22#RFQ-3-151 289. E-MAIL: Dennis D. Pehotsky, Dennis.D.Pehotsky@grc.nasa.gov. NASA/GRC plans to issue a Request for Quote (RFQ) for Laservec Diode Velocimeter The ability to make non-contact flow measurements is essential to solving a wide range of flow problems in industry and research. Laser-based systems that provide accurate non-contact measurements have long been available, but have usually required detailed setup or alignmentprocedures, special laser cooling arrangements, and/or special power supply requirements for the laser. More basic systems were easier to use but the limited power available from the typical He-Nelaser light source restricted the measurement capability to simple flows. Now, TSI Introduces... the Laservec Diode Velocimeter...a state-of-the-art, compact, easy-to-use, non-contact, flow measuring system....a system that needs no adjustments or alignment....a complete system, including the laser head, signal processor, interface card, and Windows.-based data collection and analysis software. Diode Laser-based Optical Head(Model LDP 100). The Laservec Diode Velocimeter is designed around a unique new optical head that combines both transmitter and receiver in a single unit. The use of diode laser technology results in a compact, robust velocimeter system that does not need water cooling or special power supply capabilities. With 50 mW of power in the visible beam, this diode laser package delivers more power to the measuring region than other systems, especially those using He-Ne lasers. Laservec systems incorporate diode laser design techniques developed for process control systems that must operate reliably in harsh environments, and so depend on the stable operation of the diode laser. Laservec systems contain the latest advancements, including a unique approach to compensate automatically for potential variations in laser performance over its lifetime. The unique optical package includes frequency shifted beams with carefully matched beam paths. The effect of the Bragg cell on diode laser beam quality was carefully analyzed to arrive at the optimum optical arrangement. The configuration selected assures the best fringe uniformity in the measuring volume. The scattered light collected in backscatter is focused onto a photodiode. The ergonomically-shaped head is compact and can be mounted on tripod for flow measurements. For automatic flow-field mapping, the optical head could also be mounted on a traverse system. Signal Processor (Model IFA 600) The IFA 600 is a compact unit that provides electrical power to the optical head and performs all control and signal processing functions. It contains a digital signal processor that extracts the instantaneous velocity values from the photodiode output. The IFA 600 is entirely software controlled. With no external knobs, no adjustments or calibrations other than those performed by software are required to operate the system. Over the years, TSI has developed a variety of signal processors using FFT and autocorrelation techniques. The IFA 600 design harnesses elements of both to create an easy-to-use, compact, cost effective, yet highly accurate signal processing system. Through a novel SNR-based burst detection technique, the processor identifies the presence of true velocity signals. The burst detector centers the burst so that the bestportion of the signal is processed to derive the velocity information. These patented signal processing techniques ensure accurate velocity measurements from the IFA 600 Digital Burst Processor. Data Analysis & Display Windows.-based data collection and analysis software and a plug-in interface card are supplied as part of the Laservec system. The interface card provides DMA data transfer from the IFA 600 processor to the computer. True real-time data displays make system optimization, including seeding, easy and straightforward. A real-time time history of the velocity at the measuring point permits an on-line display of flow turbulence. Statistical properties of the flow, such as mean, standard deviation, skewness, and flatness are calculated and displayed. In addition to real-time displays, the software provides traverse control, power spectrum, time history, and advanced graphics capabilities. Data Analysis & Display LDP 100 Optical Head Laser power 50 mW Laser wavelength 690 nm (nominal) Beam spacing 50 mm Cable length 5 m Focal length 250 mm standard; 120 mm and 350 mm optional Dimensions (W x H x L) 10.2 cm x 10.8 cm x 27.3 cm (4 in. x 4.25 in. x 10.75 in.) IFA 600 Digital Burst Processor Doppler frequency range 100 Hz to 75 MHz Downmix frequency 40 or 80 MHz Line voltage 100 to 120 VAC at 0.5 A; 220 to 240 VAC at 0.33 A Dimensions (W x H x D) 29.2 cm x 10.8 cm x 26 cm (11.5 in. x 4.75 in. x 10.25 in.) To order a Laservec Diode Laser Velocimeter System, specify: TSI Model LDP 100 Optical Head TSI Model IFA 600 Digital Burst Processor Laservec Windows-based Software and DMA card Specifications subject to change without notice. Windows is a trademark of Microsoft Corporation. Forward to Single-component Systems Back to LDV Overview or LDV Contents TSI HOME | FMID HOME | PRODUCTS | WHAT'S NEW | CALENDAR | NEWSLETTERS | CONTACT US For technical comments or questions, e-mail fluid@tsi.com. For questions or comments regarding this WWW site, e-mail to webmaster@tsi.com. )Copyright 1998 TSI Incorporated. All rights reserved. This procurement is being conducted under the Simplified Acquisition Procedures (SAP). The Government intends to acquire a commercial item using FAR PART 12. This procurement is a total small business set-aside. See Note 1. The SIC Code and Size Standard are 3674 and 500employees, respectively,The DPAS Rating for this procurment is DO C-9. The anticipated release date of RFQ 151289 is on or about 5-25-00 with an anticipated quote due date of on or about 6-12-2000. All qualified responsible sources may submit a quote which shall be considered by the agency. NO VERBAL RESPONSES WILL BE ACCEPTED, NO EXCEPTIONS!!! An ombudsman has been appointed -- See Internet Note "B". The solicitation and any documents related to this procurement will be available over the Internet. Thesedocuments will be in Microsoft Office Suite (Word 6.0, Excel 5.0, or PowerPoint 4.0) format and will reside on a World Wide Web (WWW) server, which may be accessed using a WWW browser application. The Internet site, or URL, for the NASA/GRC Business Opportunities home page is http://nais.msfc.nasa.gov/cgi-bin/EPS/bizops.cgi?gr=C&pin=22 Prospective offerors shall notify this office of their intent to submit an offer. It is the offeror's responsibility to monitor the Internet site for the release of the solicitation and amendments (if any). Potential quoters will be responsible for downloading their own copy of the solicitation and amendments (if any). Any referenced notes can be viewed at the following URL: http://genesis.gsfc.nasa.gov/nasanote.html Posted 05/25/00 (D-SN458868). (0146)

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