Tender Details

Country: USA
Summary: Four-terminal Guarded Coaxial Scanner
UST Ref No: 116957375
Deadline: 11 Apr 2025
Financier: Self Financed
Purchaser Ownership: Government
Tender Value: Refer Document
Notice Type: Tender
Document Ref. No.: NIST-SS25-26
Purchaser's Detail:
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Description:
Description
NIST-SS25-26
Title: Terminal Guarded Coaxial Scanner
BACKGROUND
The National Institute of Standards and Technology (NIST), Physical Measurements Laboratory (PML), Fundamental Electrical Measurement (FEM) group realizes and maintains the units of resistance, capacitance, and inductance for the United States. To support and verify the automated connection of resistance standards at dc requires guarded coaxial switching of four-terminal standards, including the shields of the connections.

In order to meet the mission indicated above, FEM requires instruments to automate the connection of four-terminal electrical resistance standards to measurement systems such as resistance bridges and cryogenic current comparators. Measurements will be made using artifact standards and graphene quantum Hall array resistance standards (QHARS) with low uncertainty traceable to fundamental constants. Guarded coaxial connections provide a solution to electrical/thermal noise errors associated with leakage currents to ground that can effect high accuracy electrical measurements at parts in 10-7 to 10-8 uncertainty level.
NIST is seeking information from sources that may be capable of providing a commercial item solution that meets or exceeds the following draft minimum specifications, inclusive of FOB Destination shipping and warranty:
Line Item 0001:
Description: Terminal Guarded Scanners
Quantity: Four (4)
Technical SpecificationsGrinder/Polisher
Electro-mechanically connect four-wire input signal pairs (High and Low), where each pair has 2 insulated center conductors and a shield to one of 10 to 16 output channels (High and Low), where each pair has 2 insulated center conductors and a shield. The scanner must provide for the connection of four-terminal guarded standard resistor to four-terminal guarded resistance bridges is needed, where the center conductors and associated shields which are connected with the selection of a ...
Documents:

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Four-terminal Guarded Coaxial Scanner - USA Tender

The COMMERCE, DEPARTMENT OF | NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, a Government sector organization in USA, has announced a new tender for Four-terminal Guarded Coaxial Scanner. This tender is published on USARFP under UST Ref No: 116957375 and is categorized as a Tender. Interested and eligible suppliers are invited to participate by reviewing the tender documents and submitting their bids before the deadline on 2025-04-11.

The estimated tender value is Refer Document, and full details, including technical specifications and submission requirements, are provided in the official tender documents. Ensure all submissions meet the criteria outlined to be considered for evaluation.