Calibration Procedures for Direct-current Resistance Apparatus

Calibration Procedures for Direct-current Resistance Apparatus PDF

Author: Paul P. B. Brooks

Publisher:

Published: 1962

Total Pages: 74

ISBN-13:

DOWNLOAD EBOOK →

The equipment and procedures used at NBS for the precise measurement of d-c resistance are explained in detail. The specific application of these procedures to the calibration of bridges and potentiometers is explained. It is expected that this paper will be of considerable help to the many company and governmental standardizing laboratories now being established.

Platinum Resistance Thermometry

Platinum Resistance Thermometry PDF

Author: John L. Riddle

Publisher:

Published: 1973

Total Pages: 136

ISBN-13:

DOWNLOAD EBOOK →

The monograph describes the methods and equipment employed at the National Bureau of Standards for calibrating standard platinum resistance thermometers (SPRT) on the International Practical Temperature Scale (IPTS-68).The official text of the scale is clarified and characteristics of the scale are described.Several designs of SPRT's are shown and discussed in the light of the requirements and recommendations on the text of the IPTS-68.Possible sources of error such as those due to the internal and external self-heating effects and the immersion characteristics of SPRT's are described in detail.Precautions and limitations for the mechanical and thermal treatment and for the shipment of SPRT's are indicated, and a guide is given for those desiring the thermometer calibration services of NBS.(Modified author abstract).

Lanterna Rally - Theme by Grace Themes