NBS Special Publication, Issue 250U.S. Government Printing Office, 1965 |
From inside the book
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Page
... adjustments should be attended to by the client prior to shipment . Apparatus not in good condition cannot be tested , nor can the Bureau undertake the repair or adjustment of any equipment , except by special arrangement . If it is ...
... adjustments should be attended to by the client prior to shipment . Apparatus not in good condition cannot be tested , nor can the Bureau undertake the repair or adjustment of any equipment , except by special arrangement . If it is ...
Page 8
... adjustments should be attended to by the client prior to shipment . Apparatus not in good condition cannot be tested , nor can the Bureau undertake the repair or adjustment of any equipment , except by special arrangement . If it is ...
... adjustments should be attended to by the client prior to shipment . Apparatus not in good condition cannot be tested , nor can the Bureau undertake the repair or adjustment of any equipment , except by special arrangement . If it is ...
Page 23
... adjustment of meters and does not knowingly begin tests on faulty meters . Before tests can be started the test conditions must be completely specified by the user as to current and voltage ranges to be tested , frequency , applied ...
... adjustment of meters and does not knowingly begin tests on faulty meters . Before tests can be started the test conditions must be completely specified by the user as to current and voltage ranges to be tested , frequency , applied ...
Page 29
... adjustment are usually not accepted for calibration . ( b ) The largest contribution to instability in inductive voltage dividers often arises in the decade switches . Variable contact resistance in these switches sometimes affects the ...
... adjustment are usually not accepted for calibration . ( b ) The largest contribution to instability in inductive voltage dividers often arises in the decade switches . Variable contact resistance in these switches sometimes affects the ...
Page 43
... adjustment of the system to the frequency of operation selected for the calibration . Time and cost often can be reduced by minimizing the number of times the operating frequency of the calibration system must be readjusted . To help in ...
... adjustment of the system to the frequency of operation selected for the calibration . Time and cost often can be reduced by minimizing the number of times the operating frequency of the calibration system must be readjusted . To help in ...
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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).