SOURCES SOUGHT
59 -- AMPLIFIED PRESSURE TRANSDUCER
- Notice Date
- 7/24/2002
- Notice Type
- Sources Sought
- Contracting Office
- Department of Agriculture, Natural Resources Conservation Service, National Business Management Center, Fort Worth Federal Center, Building 23 501 Felix Street, Fort Worth, TX, 76115
- ZIP Code
- 76115
- Solicitation Number
- NRCS-7-NBMC-02
- Response Due
- 8/15/2002
- Point of Contact
- James Lowe, Contract Specialist, Phone 817-509-3520, Fax 817-509-3594, - Alan Browder, Supervisory Contracting Officer, Phone 817-509-3505, Fax 817-509-3594,
- E-Mail Address
-
jlowe@ftw.nrcs.usda.gov, abrowder@ftw.nrcs.usda.gov
- Description
- The USDA, Natural Resources Conservation Service (NRCS), National Water and Climate Center (NWCC), located in Portland, OR, operates two unique hydroclimatic data collection systems. One of the systems known as the Snowpack Telemetry (SNOTEL) provides near real-time precipitation, air pemperature and snowpack information to forecast stream flow volumes. The NWCC is seeking sources for pressure transducers to be used for it SNOWTEL system. Prospective Bidders will be required to sale two transducers of each sizes, a total of 10 units to be used as test examples to NWCC in order to qualify as a possible vendor. The tests would include 1) cold testing to the specified temperture, and all other specifications as outlined in our specification sheeet, 2) prospective bidders are to provide the testing units within 8 weeks of placing an order , 3) one week to test units, then, placed on self for 3 weeks to test for short term drift. If all units submitted by a vendor pass this 4 weeks testing, then the units will be conditionally qualified and the NWCC would purchase a limited amount of units to be placed in the field. After 6 months of in-th-field testing, the vendors would be fully qualified and the NWCC would begin purchasing the units at a rate of approximately 100 per year. It is anticipated that an Indefinite Delivery/Indefinite Quantity contract will be issued to the successful vendor. The specifications for the pressure transducer are included to this posting. Vendors are required to submit their transducers and specifications to our testing center in Portland, OR, to the attention of Ronald Bush, technical contact (see attachment for instructions and specifications). Request for electronic copy of specifications can be obtained by e-mailing: jlowe@ftw.nrcs.usda.gov. Interesting vendors should contact James Lowe, Contracting Officer, by close of business on Auguse 15, 2002, 4:30 PM to arrange for purchasing the 10 units for initial testing phase. These standards and specification apply to those applications of conversion of snow water equivalent, precipitation, or other liquid level quantities to electrical voltage. The purpose is to convert liquid pressure of snow, rain, etc., to an electrical output. Transducers are used in conjunction with precipitation gages, snow pillows, stream level gages, or other similar sensors which require measurement of the height (pressure) of a hydraulic head, and conversion of that value to an electronic signal for recording or telemetry. Specifications: 1) Pressure range shall be 0-50 inches, 0-100 inches, 0-150 inches, 0-200 inches, or 0-250 inches of water, gage pressure, 2) Construction is to be of rugged, noncorroding material. Wetted numbers and electronic sections used shall not be affected by methanol, ethanol, ethylene glycol, propylene glycol, mineral oil, water, or mixture thereof, 3) Shall be capable of operating under conditions of: 100 percent relative humidity, condensing. Up to 150 percent overpressure with less than 0.5 percent shift in calibration, 4) Shall be equipped with 1/8 inch NPT (F) fitting, 5) Static error band + or - percent full scall output at 75 degrees (F). This band includes the effects of nonlinearity, hysteresis, and nonrepeatability, and is expressed as a percentage of full scale output voltage, 6) Random drift at a constant pressure shall be: less than 0.2 percent/month, full scale less than 0.5 percent/6 months, full scale, 7) Temperature sesitivity: Operating temperature range -40 degrees (F) to +130 degrees (F), 8) Temperature compensation: Temperature drift not to exceed + or - 1.3 percent full scale output at 100 degrees (F) and -20 degrees (F) with 75 degrees (F) as the reference point, 9) Output shall be stabilized to 99.9 percent of it's final nominal output voltage at any pressure, within 80 millisecond after application of excitation voltage, with no warm-up drift, 10) Output signal shall be analog with a range of 0-5 Vdc, 11) Output voltage ripple shall not exceed .025 vac (RMS), 12) Excitation voltage shall be a minimum of 10 Vdc, 13) The electrical connection to the transducer shall be a three or four wire shielded cable, length to be specified in the purchase order with 10 feet being normal, 14) The pressure chamber shall have an air bleeder port which will allow purging of any air extrained or trapped in the wetted area, 15) Any special installation instructions shall be furnished by the manufacturer such as recommended mounting attitude, proper method of voiding the pressure chamber of air, etc., and 16) Each transducer shall be tested by the namufacturer through it's full range and at representative temperatures throughout the compensated range when cold soaked to those temperatures. NOTE: THIS NOTICE WAS NOT POSTED TO FEDBIZOPPS.GOV ON THE DATE INDICATED IN THE NOTICE ITSELF (24-JUL-2002). IT ACTUALLY FIRST APPEARED ON THE FEDBIZOPPS SYSTEM ON 30-MAY-2003. PLEASE CONTACT fbo.support@gsa.gov REGARDING THIS ISSUE.
- Web Link
-
Link to FedBizOpps document.
(http://www.eps.gov/spg/USDA/NRCS/NBMC/NRCS-7-NBMC-02/listing.html)
- Place of Performance
- Address: USDA, National Water & Climate Center, 101 SW Main Street, Suite 1600, Portland, OR.
- Zip Code: 97204-3224
- Country: US
- Zip Code: 97204-3224
- Record
- SN00337123-F 20030601/030531234822 (fbodaily.com)
- Source
-
FedBizOpps.gov Link to This Notice
(may not be valid after Archive Date)
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