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Grain-Watch
Grain-Watch

Grain-Watch® Outdoor Temperature Sensor

The Grain-Watch® Outdoor Temperature Sensor GW-rHS01 measures the air temperature and relative humidity outside the silo bins. It integrates seamlessly into the Grain-Watch® PC Software and displays the ambient weather conditions in real-time.

Outdoor temperature sensor

The Outdoor Temperature Sensor GW-rHS01 can also be combined with the Grain-Watch® PLCK-USB Fan Relay for automatic silo aeration. Three different sets of trip levels for outside air temperature, relative humidity and grain temperature can be set in the software. When the trip levels for these set conditions are triggered, the silo aeration starts automatically.

Outdoor humidity sensor

  Grain Moisture Content
Grain Temperature
  14% 15% 18% 20% 22%
2°C       60 days 32 days
3°C       50 days 28 days
4°C     >170 days 44 days 24 days
5°C     138 days 38 days 19 days
6°C     102 days 32 days 15 days
7°C     70 days 26 days 12 days
8°C     49 days 21 days 10 days
9°C   >170 days 42 days 19 days 8 days
10°C   140 days 36 days 16 days 6 days
11°C   105 days 32 days 15 days 5 days
12°C   70 days 28 days 13 days 4 days
13°C   51 days 25 days 11 days 3 days
14°C >170 days 45 days 22 days 10 days 3 days
15°C 150 days 42 days 20 days 9 days 2 days
16°C 135 days 39 days 19 days 8 days 2 days
17°C 125 days 36 days 18 days 7 days 1 day
18°C 120 days 34 days 17 days 6 days 1 day
19°C 115 days 32 days 16 days 6 days 1 day
20°C 110 days 30 days 15 days 6 days 1 day
  Source: Lantmännen / JTI*, 2004

Example: Grain with a temperature of 13°C and a moisture content of 15% can be stored for 51 days.

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*Swedish Institute of Agricultural and Environmental Engineering