Sensor tester – Great Plains PM300 Assembly Instructions User Manual

Page 13

Great Plains Mfg., Inc.

116-008M

2/5/13

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E6602

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MODEL

46436-117B

SERIAL

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2010 03

Sensor Tester -

for blockage sensor testing on air drills.

The Sensor Tester (part # AE6602) is primarily used to verify the operation of the blockage sensors.
These are located in the smaller seed delivery hoses on or near the distribution towers.

Refer to Figure 16

1. Locate the row associated with the sensor
to be tested.

3. Connect the Seed Sensor Tester to the sensor lead. Any
object passing through the blockage sensor, will cause the
sensor to emit a pulse. With the tester connected to the sensor,
drop some seed or feed a flexible object like a zip tie through
the seed tube. If the sensor is working correctly, the pulse it
creates will cause the tester to “beep”.

Note: The Seed Tube Sensor Tester operates on a 9 volt battery that is accessible through a door
in the back of the case. Make sure the battery is good before replacing a sensor.

2. Locate the wiring harness coming out of the sensor and follow
it up to the row harness connection.

Sensor Tester -

for application rate sensor testing on air drills.

The Sensor Tester (part # AE6602) can be used in conjunction with the Application Rate
Sensor Adapter (part # AE2607) to verify the operation of the application rate sensor (shaft
speed sensor).

Refer to Figure 17

3. Disconnect the application rate sensor lead at the extension harness and connect the assembly
made in step one to the application rate sensor.

Note: The Seed Tube Sensor Tester operates on a 9 volt battery that is accessible through a door
in the back of the case. Make sure the battery is good before replacing a sensor.

4. The application rate sensor will create 360 pulses per revolution of its input shaft. Every
pulse created will case the sensor tester to “beep” if the sensor is functioning properly.

1. Assemble the Seed Sensor Tester together with the
Application Rate Sensor Tester Adapter.

2. Locate the wiring harness coming out of the application
rate sensor. On all air drills, this can be found mounted
on the end of the meter shaft. Follow the lead until you
find the three pin connection at the working set master
harness.

Fig. 17

Fig. 16