RayTek Thermalert GP Series Operator's Manual page 59

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The length of the air supply hose and the temperature of the cooling air can
be estimated from the chart in Figure B-20.
Note: The "Hose Length" is the length of hose exposed to high ambient temperature
and not the overall length of the hose.
T
amb
[°C]
250
200
150
100
85
Hose Length
meters
1 2
feet
3 6
Figure B-20: Maximum Ambient Temperature Depending on Air
Flow and Hose Length
Thermalert GP Series Operator's Manual
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15
10 20
5 25
0 30
3 4 5
9 12 16
51
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