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Dryer Master DM510
Installation Manual
Option 1a - Bypass Using Sampling Auger
The moisture sensor is installed in a by-pass where a portion of the grain is directed through the
bypass. The grains flows through the sensor and then back into the system (see Figure 12 - By-Pass
auger installation
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for more details). This method is used when
there is less than 18” of vertical space at the bottom of the dryer. The fin sensor is provided with a
square chute. A small slow moving auger restricts the flow of grain so the chute remains full of
compacted grain at all times.
1.
Install the chute so that there will be a continuous flow of grain.
2.
Make sure that the chute will always be full of grain.
3.
Make sure that the grain flowing through the chute is a good representative sample of the
grain to be tested. Placing the sensor in a location where it will NOT get an excess of fines or
trash which will contribute to errors or false readings. Inaccurate or false readings of the
outlet sensor will adversely affect control of the dryer by the Dryer Master.
4.
The flow of grain through the chute should be approximately ½ inches per second or about
50 cubic feet, 1.4 cubic meters per hour.
5.
Locate the Outlet Sensor so it can be safely
accessed for cleaning out, and taking grain
samples.
A four-inch sampling auger is
recommended. Several other options
are available; see Table 1: Gear
reductions for metering devices. All
gear reductions given are based on a
chute that is six inches by six inches.
For the best flow characteristics, it is
recommended that the auger be
opened to the full width of the chute.
This will also reduce transition
complexity. Verify the auger flow and
gear box required. The table is an
approximate guideline.
Installation Procedure
1.
Remove the Outlet Sensor from the 6” square chute while installing and welding the
transitions
2.
Make the necessary changes to the discharge system of the dryer so that there is room for
the chute, sampling auger and slide gate.
3.
Install the slide gate above the sensor to shut off the flow to the sensor to allow cleaning out
and or servicing the sensor
4.
Install the Chute and Sensor so the operator can inspect and clean the sensor. It must be
possible to do these tasks easily and safely while the dryer is operating.
5.
Install bars across the opening to the sensor in the direction of grain flow. This will prevent
large objects from entering the sensor.
6.
Mount the chute in a vertical position.
7.
Install the sampling auger as horizontally as possible.
8.
For greatest sensitivity and accuracy, it is recommended to bolt the chute such that the fin of
the sensor will be oriented in the same direction as the shaft of the auger.
Metering Device
Approximate
rpm
Gear reduction
for 150 rpm
motor
6” screw conveyor
standard pitch
6.5
270:1
6” screw conveyor ½ pitch
13
135:1
4” screw conveyor
standard pitch
20
88:1
4” screw conveyor ½ pitch
40
44:1
4” flex screw conveyor
20
88:1
Table 1: Gear reductions for metering devices
Содержание DM510
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