RayTek Thermalert GP series - GPR & GPS Head with Air;Water-Cooled Housing

40 Thermalert GP Series Operator’s Manual
125
(4.92)
1.5 inch
20 UN-2A
THREAD
1/8" NPT NIPPLE
(2 PLCS)
53
(2.1)
23
(0.9)
51
(2.01)
63
(2.48)
22
(0.87)
mm (inches)
Figure B-7: GPR Head with Air/Water-cooled Housing
B.5.4 GPR & GPS Head with Air/Water-cooled Housing
The air/water-cooled housing option allows the sensor to be used in ambient
temperatures up to 120°C (250°F) for air-cooled and 177°C (350°F) for water-
cooled. It is supplied with two 1/8” NPT brass fittings. Air flow should be
25°C (77°F) at 2.8 liters/sec (6 cfm) with a pressure drop across the housing
of 0.63 Kg/cm
2
(9 PSID). Water flow should be approximately 2 liters (0.5
gallons) per minute. Water temperature should be 10-27°C (50-80°F) for effi-
cient cooling. Using chilled water below 10°C (50°F) is not recommended.
To avoid condensation, it is recommended to use the Air Purge Collar with
the Water Cooled Housing.
Figure B-8: GPS Head with Air/Water-cooled Housing
150
(5.91)
1.5 inch
20 UN-2A
THREAD
1/8" NPT NIPPLE
(2 PLCS)
53
(2.1)
23
(0.9)
76
(3)
63
(2.48)
22
(0.87)
mm (inches)
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