Sensor tester – Great Plains PM300 Assembly Instructions User Manual
Page 7
Great Plains Mfg., Inc.
7
116-008M
2/5/13
Sensor Tester -
for testing radar or ground speed sensors on YP planters.
The Sensor Tester (part # AE6602) can be used in conjunction with the Speed Sensor
Adapter (part # AE2609) to verify the operation of a radar or hall effect ground speed
sensor.
Refer to Figure 10
1. Assemble the Sensor Tester together with the
Speed Sensor Adapter.
2. Locate the radar or hall effect sensor that supplies
the speed signal to the monitoring system. On YP12
and YP16 planters, the hall effect sensor is located
inside the rear left wheel. On all others, the radar
sensor will be located under and in front of the seed
hopper or hoppers.
3. Follow the wiring harness that comes out of the radar or hall effect sensor until you find
where it connects to the extension harness. Disconnect the sensor from the extension
harness and connect the assembly made in step one to the sensor lead.
4. If testing a hall effect sensor, wave a screwdriver or other metallic object past the end of
the sensor. Every time the object passes the end of the sensor, it should create a pulse.
This pulse will cause the sensor tester to “beep”. If testing a radar sensor, any object
waved in front of the lens should also create a pulse and 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.
Fig. 10
Sensor Tester -
for testing fan speed sensors on YP planters.
The Sensor Tester (part # AE6602) can be used in conjunction with the Application Rate Sensor
Adapter (part # AE2607) to verify the operation of the hall effect fan speed sensor.
1. Assemble the Sensor Tester together with the
Application Rate Sensor Adapter.
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.
Refer to Figure 11
2. Locate the hall effect sensor the supplies the fan speed
signal to the monitoring system. This will be the wiring
harness coming out of the screen on the fan assembly.
3. Follow the harness until it connect to the extension harness. Disconnect the harness and
connect the assembly made in step one to the sensor lead.
4. If the sensor is still mounted in the fan assembly, any motion of the fan should cause the
sensor to create a pulse that will make the tester “beep”. If the sensor has been removed,
waving a metallic object like a screwdriver should produce the same result.
Fig. 11
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