MODIFICATION
66 -- Teraohmmeter
- Notice Date
- 4/14/2014
- Notice Type
- Modification/Amendment
- NAICS
- 334515
— Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals
- Contracting Office
- Department of the Air Force, Air Force Materiel Command, AFLCMC/WNMRP AFMETCAL, 813 Irving Wick Dr. W. Bldg 2, Heath, Ohio, 43056-6116, United States
- ZIP Code
- 43056-6116
- Solicitation Number
- FA2263-14-Q-0002
- Point of Contact
- Michael D Hickey, Phone: 740-788-5043
- E-Mail Address
-
michael.hickey.2@us.af.mil
(michael.hickey.2@us.af.mil)
- Small Business Set-Aside
- N/A
- Description
- *** 14 April 2014 *** There are some additional questions that were received for this solicitation. The question and engineer's response are provided below: 3.3.3 1 year Stability Specifications and Calibration Uncertainties PD Statement: Specifications for the Teraohmmeter shall include a breakout of 1 year stability specifications and calibration uncertainties. These specifications and uncertainties shall also be included in the documentation and supplied by the contractor. Teraohmmeter 1 year measurement uncertainties and short term stabilities shall include reference resistor uncertainties and dielectric effects. Question: Can you confirm that all Specifications, Measurement Uncertainties, and Calibration Uncertainties are to include repeatability? For high resistance measurements repeatability often has a higher contribution to uncertainty than the standard deviation of a single measurement which is particularly important when determining the uncertainty related to "Short Term Stability" specifications. Response: Yes, the repeatability should be included in the uncertainties. Question: What are the uncertainties of the reference resistors used with the teraohmmeter. This is needed for uncertainty analysis for both 1 year and short term measurements to ensure conformance to the PD. Response: We can provide the uncertainties if needed. If it is a direct measurement type meter then it is an absolute uncertainty and the reference resistor uncertainties are not needed. 3.3.4 Short Term Stability: PD Statement: The Teraohmmeter shall meet or exceed the following Short Term Stability when operated within the temperature range of 23˚C ±2˚C and within a 3 hour period. Question: Are these specifications in the Teraohmmeter PD (i.e. 14E-108A-DC Rev 3 21 March 2014) based on a Direct Measurement capability where no reference resistance standard is required to make the measurement? Specifically once the Teraohmmeter is calibrated, must all specifications be met for a period of one year after the calibration without the requirement of using a reference resistance standard to make a measurement in Ratio or Bridge or Transfer Mode; and without the requirement of re-calibrating the Teraohmmeter "on-use" in order to meet the PD specifications? Response: That is correct, the 1 year specifications in the PD should be the specifications for at least 1 year after the Teraohmmeter has been calibrated. Question: 3.3.3 1 Year Stability Specifications and Calibration Uncertainties: PD Statement: Specifications for the Teraohmmeter shall include a breakout of 1 year stability specifications and calibration uncertainties. These specifications and uncertainties shall also be included in the documentation and supplied by the contractor. Does this mean that this is to be supplied in the technical response or with delivery of first unit if contract is awarded? Response: We would like to see the specifications with the technical response.
- Web Link
-
FBO.gov Permalink
(https://www.fbo.gov/spg/USAF/AFMC/AFMETCAL/FA2263-14-Q-0002/listing.html)
- Record
- SN03338556-W 20140416/140414235217-7e1376572670f1e4656aedcb50014dae (fbodaily.com)
- Source
-
FedBizOpps Link to This Notice
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