Evaluation of Several Portable, Direct-Reading, Electrochemical O sub 2 Meters

摘要

Nineteen portable, electrochemical O sub 2 analyzers from six manufacturers were evaluated for design and performance by the Bartlesville (Okla.) Energy Research Center, Energy Research and Development Administration, in a testing facility specifically designed for such instrument-performance evaluations. The units tested would be acceptable tools for use in measuring oxygen deficiencies which may occur in mining operations. The evaluation showed that the analyzers have linear responses to oxygen in the 9 to 25 percent range and that their span drift measured over 24 hours was minimal. Changes in temperature and altitude were shown to affect analyzer response significantly, but no interference effects from CO, CO sub 2 , NO sub 2 , or H sub 2 O were observed. (ERA citation 02:009008)