Page 102 - SICCO catalog

SICCO Technical Information
Performance at a glance.
DRYING PERFORMANCE Desiccators for gas-filling
Test procedure:
Relative humidity
%
100
90
80
Super-Star / Super-Star Horizontal Drying performance » room temperature 22 °C
A relative humidity of 100 % is simulated in a desiccator for gas-filling.
A SICCO Gas Dosing Controller is connected during the lead in of nitrogen
in order to control the gas supply and monitor the relative humidity.
The attainable required humidity is adjusted to 10 %, the flow rate to 40 8 Liters / minute and the pressure reducer on the nitrogen bottle to 30 0,5 bar. The door remains closed tightly until the end of the test. The 20 curves show the relative humidity versus time. 10
Results:
The moist air inside the desiccator is displaced by nitrogen with low humidity and thus the required relative humidity is reached in a very short period of time.
OPENING AND CLOSING THE DOOR
Test procedure:
70
60
50
0
%
45
40,5
Super-Star / Super-Star Horizontal Opening and closing the door » room temperature 22 °C
Relative humidity
Due to the constant gassing with nitrogen the relative humidity inside a desiccator is 15 %. A SICCO Gas Dosing Controller is connected during
the lead in of nitrogen in order to control the gas supply and monitor the 27 relative humidity. The attainable required humidity is adjusted to 10 %, 22,5 the flow rate to 8 Liters / minute and the pressure reducer on the nitrogen 18 bottle to 0,5 bar. The door of the desiccator is opened completely for 30 13,5
seconds. The curves show the relative humidity versus time.
Results:
The opened door causes an air exchange and thus the relative humidity inside rapidly increases. By closing the door the gas dosing controller starts working again and the work space is purged again with nitrogen. After approx. 30 minutes the initial value is reached again:
INTERRUPTION OF GAS SUPPLY
Test procedure:
36
31,5
9
4,5
0
Relative humidity
Super-Star / Super-Star Horizontal Interruption of gas supply » room temperature 22 °C
Due to the constant gassing with nitrogen the relative humidity inside a desiccator is 15 %. A SICCO Gas Dosing Controller is connected during
the lead in of nitrogen in order to control the gas supply and monitor the
relative humidity. The attainable required humidity is adjusted to 10 %,
the flow rate to 8 Liters / minute and the pressure reducer on the nitrogen
bottle to 0,5 bar. The Gas Dosing Controller is turned off to interrupt the 10,5 gas supply. The desiccator remains closed tightly until the end of the test. 7
The curves show the relative humidity versus time. 3,5 0
Results:
Despite the missing gas supply the relative humidity inside the desiccator is only proportionally increasing slowly.
35 %
31,5
28
24,5
21
17,5
14
0:36
3
3
1:12
6
6
9
9
2:24
12
12
www.sicco.de
min.
min.
15
Relative humidity of below 15 % after approx. 15 minutes.
15
The initial value is attained after approx. 10 minutes.
1:48
3
h
Only 10 % of increase within 3 hours.
92