Are fan reversals necessary if the temperature is monitored on the EXIT air of the heat treatment chamber?
No, it is felt that the exit air is the coolest air, so monitoring the exit air would be the equivalent to monitoring fan reversals. The dry bulb temperature sensors in all options (when specified) must be located on either side of the heat treatment chamber. It is understood that if a heat treatment chamber has a dry bulb temperature sensor on one side at 8 feet from one end and the next dry bulb temperature sensor is located 24 feet from the same end as the first dry bulb sensor but is not on the same side, it is located in the center of the heat treatment chamber, this would be calculated as one side.
