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Placement of Ground Sensors
Placement of Individual Ground Sensors
Copyright 2009 Danfoss Inc.
Correct placement of the sensor(s) is important for the system to work as
intended. Some basic guidelines follow:
The number of ground sensors:
1. The more sensors added to the system the better the performance.
2. The basic principle is to place one sensor where the snow/ice will appear first (for fast
detection) and one sensor where the snow/ice will disappear last (for complete melting). If it is
not obvious just place the sensors as far apart from each other as possible.
3. With only one sensor you will have to decide what is most important:
a) fast detection and activation of the system or
b) securing a complete melting of all snow/ice. A one sensor ground system will be slower
in terms of detection and activation than a two sensor ground system, where one sensor
measures the ground temperature and the other sensor measures the moisture.
4. With more than two sensors it is possible to cover problem spots where snow usually is not
detected or where snow is not completely melted when the system stops.
1. The sensor must be placed within the heated area and at least 3.3' (1 m)
from the edge of the area, if possible.
2. The sensor must be placed in between the heating cables - a distance
of minimum 0.4" (1 cm) should be maintained between the sensor tube
and the heating cable.
3. There must be a distance of minimum 3.3ft. (1 m) between the two sensors.
Junction box
088L3370 - 06/09
Min. 3 ft.
Sensor
0.4" (1cm)
Feeder cable
TEL: 866-676-8062. FAX: 905-285-2055
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