New forms of instruments for showing the presence and amount of combustible gas in the air . X AH 4. A. -y Yd Fig. 16.—The bimetallic detector of hydrogen was introduced into the box at the rate of o. 1 cubicfoot per minute, and the time from starting the gas until thealarm rang was observed when currents of , , and ampere w?ibti\ Combustible Gas Detectors 81 were passed through the apparatus. With ampere the timeswere 8, 10, and 11 seconds; with ampere, from 9 to 12 seconds,averaging io>£ seconds, and with ampere 13 to 14 results indicate greater sen
New forms of instruments for showing the presence and amount of combustible gas in the air . X AH 4. A. -y Yd Fig. 16.—The bimetallic detector of hydrogen was introduced into the box at the rate of o. 1 cubicfoot per minute, and the time from starting the gas until thealarm rang was observed when currents of , , and ampere w?ibti\ Combustible Gas Detectors 81 were passed through the apparatus. With ampere the timeswere 8, 10, and 11 seconds; with ampere, from 9 to 12 seconds,averaging io>£ seconds, and with ampere 13 to 14 results indicate greater sensitivity when only a small cur-rent is used to operate the instrument, but there is little differencein this respect. The sensitiveness of the instrument can be increased by increas-ing the length or reducing the thickness of the bimetallic strips. III. SPECIFICATIONS FOR THE CONSTRUCTION ANDCALIBRATION OF INSTRUMENTS 1. COMPENSATED BRIDGE INDICATOR (a) CONSTRUCTION OF APPARATUS The following specifications apply to the compensated bridgeindicator believed to be best for general use. The form is onewhich
Size: 1847px × 1353px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookdecade1910, bookidnewformsofinstru15unse
