Evaluation of Intrinsically Safe Instruments and Apparatus for Use in Underground Coal Mines.
Kurtz-JM; Bartkus-AA; Schram-PJ
For Reference Only At Bureau Libraries :479 pages
Ten methane monitoring systems and machine control circuits were examined and tested according to the requirements in cfr title 30, parts 17 and 27, the standard ul 913, and the document "test requirements for instruments or apparatus to be considered for m.E.S.A. Intrinsically safe certification (tentative)." The test results indicate that none of the products complied with all parts of all requirements as interpreted.
CP; Final Contract Report;
For Reference Only At Bureau Libraries
Underwriters Labs., Inc.