Special PublicationNational Bureau of Standards, 1968 |
From inside the book
Results 1-5 of 76
Page 1-9
... value of the equipment a transit insurance is carried by the customer this fact should be state ( f ) The risk of loss or damage in handling or testing of any it NBS must be assumed by the customer , except when it is determined by ...
... value of the equipment a transit insurance is carried by the customer this fact should be state ( f ) The risk of loss or damage in handling or testing of any it NBS must be assumed by the customer , except when it is determined by ...
Page 1-11
... values rep Limits of uncertainty usually comprise ( 1 ) an estimate of systematic plus ( 2 ) a value of imprecision . ( 1 ) Often the systematic error estimate is based on experie judgment . Sometimes it is an explicit combination of a ...
... values rep Limits of uncertainty usually comprise ( 1 ) an estimate of systematic plus ( 2 ) a value of imprecision . ( 1 ) Often the systematic error estimate is based on experie judgment . Sometimes it is an explicit combination of a ...
Page 2-2
... values corresponding to all possible readings be computed . Ordinarily precision standard resistors are measured in design permitting , at a temperature of 25 ° C , while resistance ratus is measured at room temperature , usually from ...
... values corresponding to all possible readings be computed . Ordinarily precision standard resistors are measured in design permitting , at a temperature of 25 ° C , while resistance ratus is measured at room temperature , usually from ...
Page 2-3
... values fall within 0.2 of a nominal value which is itself a decimal mult submultiple ) of 1 ohm : Two - terminal measurements : 211.011a ( 1 ) 211.011b 211.011c ( 2 ) Standards suitable for direct measurement . Composite standards to ...
... values fall within 0.2 of a nominal value which is itself a decimal mult submultiple ) of 1 ohm : Two - terminal measurements : 211.011a ( 1 ) 211.011b 211.011c ( 2 ) Standards suitable for direct measurement . Composite standards to ...
Page 2-4
... values for the inner ratio arms . The same nsideration applies to the inner ratio arms of double direct reading tio ... value of resistance when dials or plugs are advanced above the zero setting . Precision resistance boxes with steps ...
... values for the inner ratio arms . The same nsideration applies to the inner ratio arms of double direct reading tio ... value of resistance when dials or plugs are advanced above the zero setting . Precision resistance boxes with steps ...
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Common terms and phrases
accuracy actual costs additional attenuation Attenuation Range Autocollimating available:(a bolometer unit Bureau of Standards calibration or test calibrations not covered capacitance capacitors cavity wavemeter Coaxial coaxial connectors Determination dial Direct inquiries directional couplers Estimated Limits Exposure rate Frequency MHz Frequency Range gage blocks hydrometers inch insertion loss Instr Item Description laboratory length Limits of Uncertainty mark shipments measurements not covered meter method microwave National Bureau NBS Fee Schedule neutron noise temperature nonreflecting ohms percent phase angle Phase Shifters platinum plug and ring Powermeters pyrometers R. W. Beatty R/min ratio reflection coefficient reflection coefficient magnitude resistors ring gages sample scale Section setting signal sources Special calibrations Special measurements specified specimen standard attenuation submitted surface technique Telephone Thermal thermocouple thread Type N connectors uncertainty limits values of emf voltage dividers VSWR waveguide WWVB WWVH zero ει
Popular passages
Page 1-1 - THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement; coordinates that system with measurement systems of other nations; and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce.
Page 1-1 - That the functions of the bureau shall consist in the custody of the standards; the comparison of the standards used in scientific investigations, engineering, manufacturing, commerce, and educational institutions with the standards adopted or recognized by the Government; the construction, when necessary, of standards, their multiples and subdivisions; the testing and calibration of standard measuring apparatus; the solution of problems which arise in connection with standards; the determination...
Page ii - This publication contains a descriptive listing, item by item, of most of the test and calibration work done at the National Bureau of Standards with the respective fees.
Page 1-1 - Cooperation with other governmental agencies and with private organizations in the establishment of standard practices, incorporated in codes and specifications. (5) Advisory service to Government agencies on scientific and technical problems. (6) Invention and development of devices to serve special needs of the Government.
Page 1-1 - The development of methods for testing materials, mechanisms, and structures, and the testing of materials, supplies, and equipment, including items purchased for use of Government departments and independent establishments. (d) Cooperation with other governmental agencies and with private organizations in the establishment of standard practices, incorporated in codes and specifications.
Page 1-1 - States for a complete and consistent system of physical measurements, coordinates that system with the measurement systems of other nations, and furnishes essential services leading to accurate and uniform physical measurements throughout the Nation's scientific community, industry, and commerce.
Page 2-22 - Page 43 shunts, current transformers, and voltage (potential) transformers, should be packed in separate boxes to avoid possible damage to the instruments. Heavy pieces should always be shipped in wooden boxes and held in place, if necessary, by checks or cleats. Large transformers, especially those having oilfilled iron cases, should be crated separately and arranged whenever possible so that the terminals can be made accessible for tests without removing the entire crate. (7) The tops of boxes...
Page 1-1 - ... (c) The development of methods for testing materials, mechanisms, and structures, and the testing of materials, supplies, and equipment, including items purchased for use of Government departments and independent establishments. (d) Cooperation with other governmental agencies and with private organizations in the establishment of standard practices, incorporated in codes and specifications.
Page 5-7 - Kc, for bolometer-coupler units is defined as the ratio of the substituted dc power in the bolometer unit on the side arm of the directional coupler to the microwave power incident upon a non-reflecting load connected to the output port of the main arm.