purge meter interlock
purge meter interlock
[′pərj ¦mēd·ər ′in·tər‚läk] (mechanical engineering)
A meter to maintain airflow through a boiler furnace at a specific level for a definite time interval; ensures that the proper air-fuel ratio is achieved prior to ignition.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.