NBS Special Publication, Issue 250U.S. Government Printing Office, 1965 |
From inside the book
Results 1-5 of 24
Page 21
... size and coating . Because humidity effects may reach equilibrium only after days ( or even weeks ) , it is recommended that laboratory humidity be held continu- ously at or below 50 percent . ( c ) Ambient temperature and self ...
... size and coating . Because humidity effects may reach equilibrium only after days ( or even weeks ) , it is recommended that laboratory humidity be held continu- ously at or below 50 percent . ( c ) Ambient temperature and self ...
Page 24
... size of the wire of the leads used in the secondary circuit . Alternatively the burden may be stated in terms of the volt - amperes and power factor of the secondary circuit at the test frequency . ( 3 ) The test equipment regularly ...
... size of the wire of the leads used in the secondary circuit . Alternatively the burden may be stated in terms of the volt - amperes and power factor of the secondary circuit at the test frequency . ( 3 ) The test equipment regularly ...
Page 43
... sizes given below in the table of suggested calibration frequencies . It should be emphasized that the suggested frequencies are primarily for economy and for convenience to those requesting calibrations . In general the calibration ...
... sizes given below in the table of suggested calibration frequencies . It should be emphasized that the suggested frequencies are primarily for economy and for convenience to those requesting calibrations . In general the calibration ...
Page 44
... sizes terminated with stand- ard waveguide connectors : Fee 201.910a - 1 WR90 ( 8.2-12.4 GHz ) .. ( ** ) 201.910a - 2 WR62 ( 12.4-18.0 GHz ) _ . ( ** ) 201.910a - 3 WR137 ( 5.85-8.20 GHz ) _ ( ** ) Measurement of calibration factor of ...
... sizes terminated with stand- ard waveguide connectors : Fee 201.910a - 1 WR90 ( 8.2-12.4 GHz ) .. ( ** ) 201.910a - 2 WR62 ( 12.4-18.0 GHz ) _ . ( ** ) 201.910a - 3 WR137 ( 5.85-8.20 GHz ) _ ( ** ) Measurement of calibration factor of ...
Page 45
... sizes terminated with standard waveguide connectors : ( ** ) 201. 910c - 1 WR90 ( 8.2-12.4 GHz ) - ( ** ) 201.910c ... size terminated with a standard waveguide connector : 201.910d - 3 WR137 ( 5.85-8.20 GHz ) - 201. 910z Special ...
... sizes terminated with standard waveguide connectors : ( ** ) 201. 910c - 1 WR90 ( 8.2-12.4 GHz ) - ( ** ) 201.910c ... size terminated with a standard waveguide connector : 201.910d - 3 WR137 ( 5.85-8.20 GHz ) - 201. 910z Special ...
Other editions - View all
Common terms and phrases
Ac-dc accepted for calibration accuracy additional American Standards Association API Standard apparatus Appendix attenuators bolometer bolometer units bulb and liquid Bureau of Standards calibration or test changes in emf charged dependent color temperature condenser microphones current fees decibels Determination diameter Electric electrode electromotive force end of table errors exceeding footnote at end frequency Gage blocks gages-determination glass Group of Standard higher or lower hygrometers ice-point reading indications inductors instruments Invar Item Description Fee laboratory length liquid column mass measurements meter National Reference Group ohms perature phase angle plug Precision pressure Radium ratio reference standards REPORT OF CALIBRATION resistance thermometer resistors ring gages sample saturated standard cells schedule special tests specifications spectrophotometer stability standard resistors submitted for calibration tabulated corrections apply temperature range test points test_ tests not covered thermal conductivity thermocouple thermometer was tested U.S. DEPARTMENT uncertainty voltage dividers waveguide weights
Popular passages
Page 11 - Standard Reference Materials issued by the National Bureau of Standards to calibrate a measurement system, or to produce scientific data that can be referred to a common base. A schedule of prices and amounts, as well as directions for ordering, is included.
Page 49 - ... index markers. Since it is necessary to determine the shift of the principal point resulting from prism effect in the lens, the equivalent focal length of the lens as mounted In the camera is incidentally determined...
Page 55 - ... wire loops, spring balances, tension handles, or other attachments liable to be detached or changed in shape. The error in the total length of the tape, when supported horizontally throughout its length at the standard temperature of 68° F. (20° C.) and at standard tension, shall not be more than 0.1 inch per 100 feet (2 mm per 25 m).