PAPER TAPES SENSITIVE TO MULTIPLE GASES

摘要

A sampling tape carries a plurality of elongated, spaced apart, gas sensitiv e regions which respond to different toxic gases. The regions can be in the fo rm of elongated tracks which can be scanned simultaneously at multiple locations. A group of scanning locations along a track can provide sample signals for a selected gas from a plurality of locations. Signals from another track can relate to a different gas.