Decagon Devices MAS-1 Podręcznik użytkownika - Strona 13
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4. Installing the MAS-1
When selecting a site for installation, it is important to
understand that the soil adjacent to the sensor surface has the
strongest influence on the sensor reading and that the sensor
measures the volumetric water content. Therefore any air
gaps or excessive soil compaction around the sensor can
profoundly influence the readings. Also, do not install the
sensors adjacent to large metal objects such as metal poles
or stakes. This can attenuate the sensor's electromagnetic
field and adversely affect sensor readings. Because the
MAS-1 has gaps between its prongs, it is also important to
consider the size of the media you are inserting the sensor
into. It is possible to get sticks, bark, roots or other material
stuck between the sensor prongs, which will adversely affect
readings. Finally, be careful when inserting the sensors into
dense soil, as the prongs will break if excessive sideways
force is used when pushing them in.
Procedure
1. The MAS-1 sensor was designed for easy installation
into the soil. After digging a hole to the desired depth,
push the prongs on the sensor into undisturbed soil at
the bottom of the hole or into the sidewall of the hole.
Make sure that the prongs are buried completely up to
the black overmolding. The sensor may be difficult to
insert into extremely compact or dry soil. If you have
difficulty inserting the sensor, try loosening the soil
somewhat or wetting the soil. Never pound it in!
MAS-1 Soil Moisture Sensor
4. Installing the MAS-1
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