Specifications

AA-12 l Appendix
Selecting the Low Temperature RTD
SCREEN B (DM-II LOW ALARM SELECT)
This is the DM-II low alarm select screen. On this screen, you will need to select an
RTD to measure the temperature for your low temperature alarm. The default for this
screen is set to off. Some hoppers use level sensors to adjust material level in the hop-
per. If that is the case, you will want to make sure the sensor selected is in the material.
Observing the temperatures of the RTD's at a steady operating state will help you to
decide which RTD would be best to use to measure the setting for your low tempera-
ture RTD.
1 Observe the RTD readings on the dryer control. At a steady operating state
scroll through the RTD readings to understand the temperature profile inside your
drying hopper. See page AA-23 “View/Monitor Screens”, the flow chart located on
that page will help you navigate to the area of the control where you can monitor
the temperature at each of the RTD locations.
2 Select the Low temperature RTD to use as a low temperature alarm. Press the
"Edit" key and the left side of the display will cycle through the RTD choices.
Once the desired RTD is shown on the left side of the display, press the enter key to
select the RTD.
DM LOW ALARM SELECT
T4 EDIT
TIP: Conair recommends
controlling at an RTD in the
middle of the material zone.
For example a full hopper
probably around RTD 3 or 4 -
half-full hopper may be
around the RTD 2 position.
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NOTE: If you choose an RTD
that is too high in hopper,
there is a chance that you
will get a nuisance alarm
when new "cold" material is
loaded into the hopper. To
avoid the nuisance alarms
you can: adjust the alarm
band (open up the toler-
ance); move the alarm set-
point or increase the tem-
perature offset. You could
also choose a different RTD
located lower in the hopper.
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