APPARATUS FOR DETERMINING THE HUMIDITY OF EXHAUST AIR EXITING A YANKEE DRYER HOOD

摘要

An adiabatic saturator (28) receives a sample of exhaust air exiting a yankee dryer hood (16) to determine the humidity of the exhaust air. The humidity is determined by temperature readings of the exhaust air (74), saturated air exiting the interior of a saturated cell (76), and water supplied to the saturator cell interior (78). An air distributor (32) in the saturator cell interior (30) promotes saturation of the exhaust air and a backflush mechanism (90) backflushes the saturator cell interior to keep the water in the cell interior clean.