Fully Automated Inductance Measuring System Using New Fabricated Inductance Box

Decade inductance boxes are widely used in electrical laboratories for calibration of instruments that measure inductance. The main aim of this paper is to construct a new inductance box providing a huge number of automated inductance steps, which are used in the laboratories to perform full automat...

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Bibliographic Details
Published in:MĀPAN : journal of Metrology Society of India 2017-09, Vol.32 (3), p.199-205
Main Authors: Raouf, M. Helmy A., Eliwa Gad, A., Said, El-Sayed Soliman A., Elwany, M. A.
Format: Article
Language:English
Subjects:
Automation
Boxes
Calibration
Decades
Inductance
Laboratories
Mathematical and Computational Physics
Mathematical Methods in Physics
Measurement Science and Instrumentation
Measuring instruments
Numerical and Computational Physics
Original Paper
Physics
Physics and Astronomy
Simulation
Theoretical
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Summary:Decade inductance boxes are widely used in electrical laboratories for calibration of instruments that measure inductance. The main aim of this paper is to construct a new inductance box providing a huge number of automated inductance steps, which are used in the laboratories to perform full automatic calibration of inductance meters. Therefore, a new inductance box has been introduced that mainly consists of three decades. The three inductance decades have the same design, but each has its four different internal inductive elements. Each decade can generate 15 different inductance values, so it is more economical and practical compared to the other ordinary decades, which produce only 10 values by using 10 internal inductive elements. 1666 different inductance values can be obtained from this inductance box, while 4096 inductance values can be obtained by the possible combinations of its three decades steps. Practical design, fabrication and specifications of this new inductance box are demonstrated in detail. It is designed to achieve relative accuracy in the range from 5 × 10 −4 to 5 × 10 −3 . It could be used to perform full automatic inductance measurements at the National Institute of Standards, Egypt, for the first time. Comparison between an ordinary inductance box and the new introduced one has been made to validate its performance.
ISSN:0970-3950
0974-9853
DOI:10.1007/s12647-017-0210-z