Specifications

AA-2 l Appendix
How the DM-II Works
The DM-II monitors the vertical temperature profile of the material in the
drying hopper. The DM-II's six temperature sensors are located within the
DM-II's temperature probe that has been / or will be installed in your dry-
ing hopper. If the temperature moves beyond the high or low setpoints,
the DM-II alerts the operator through a passive alarm displayed on the
control front and a light tower. The light tower lights green when every-
thing is running properly, amber to indicate possible trouble, and red to
alert the operator that the dryer has stopped. The DM-II will alert the
operator if, after starting the dryer, the appropriate drying temperature has
not be reached within four hours.
NOTE: Four hours is the default time. The
time can be changed with a supervisor password.
RTD Sensor Positions in the
Hopper
RTD's will be referred to in this Appendix and
on your dryer as T1, T2, T3, T4, T5, and T6.
T1 is the lower most temperature sensor within
the DM-II temperature probe and is positioned
at the bottom of the “funnel-shape” of the dif-
fuser cone section. See Figure 1. T6 is the
upper most temperature sensor in the DM-II
temperature probe and is located near the top of
the hopper when installed. Position T6 is
always located in the air void above the bed of
material.
Probe lines up with the bottom
of the diffuser cone section
Figure 1
Red - The dryer has
stopped/shut down
alarm on the dryer
Amber - possible trouble/
DM-II passive alarm
Green - running properly