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  Home > JCE Print > Journal of Chemical Education > Issues > 1999  > October  >
In the Laboratory
A Simple Supplementary Offset Device for Data Acquisition Systems
Thomas Kappes and Peter C. Hauser
The University of Basel, Department of Chemistry, Spitalstrasse 51, 4056 Basel, SWITZERLAND
Cover
October 1999
Vol. 76 No. 10
p. 1429
Abstract
The offset function of chart recorders or digital data acquisition systems are often insufficient, especially when a small signal is to be measured with a high resolution on top of a large background. The device described in this article offers in a simple way the possibility of extending the offset range and can be combined with any data acquisition system. The signal offset is obtained by adding a manually adjustable voltage to the raw signal. Amplification and noise filtering options can be implemented. The device is built from standard electronics components and is easy to assemble.
More Information
*  Citation
 Kappes, Thomas; Hauser, Peter C. J. Chem. Educ. 1999 76 1429.
*  Keywords
 Instrumental Methods; Laboratory Equipment / Apparatus
*  History
 Created:
Last Updated:		 September 6, 1999
June 23, 2005
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