11 Stabilization time
For testing DP 207 please screw off the cover of the reference cell and mount DP 207 carefully.
An examination of DP 207 is only allowed to be carried out after stabilization of the system, i. e. all compo-
nents (salt solution, atmosphere in the calibration chamber and DP 207) have reached the same tempera-
ture and humidity values.
In practice the stabilization time for a simple examination is at least 30 minutes. For a detailed long-term
examination the stabilization time will be at least 4 hours.
The stabilization has to take place in a temperature-stable ambiance, please avoid direct solar radiation.
During the stabilization time the reference cell and the DP 207 are not allowed to be touched.
Tables lithium chloride
12
The used salt lithium chloride has nearly no interfering temperature dependency of the humidity values. The
humidity tables below indicate the temperature dependency. The temperature at the salt container has to be
measured and the humidity value in the tables has to be determined by interpolation.
12.1 Humidity developing
41°F
Filling, salt
5°C
Lithium chloride
11.26
12.2 Dew point survey
41°F
Temperature
5 °C
Relative humidity
11.26 %
-8.7°F
Dew point
-22.6 °C
DP 207
50°F
59°F
68°F
10°C
15°C
20°C
11.29
11.30
11.31
Lithium chloride ( LiCl )
50°F
59°F
68°F
10 °C
15 °C
20 °C
11.29 %
11.30 %
11.31 %
-1.7°F
5.4°F
12.4°F
-18.7 °C
-14.8 °C
-10.9 °C
77°F
86°F
95°F
25°C
30°C
35°C
11.30
11.28
11.25
77°F
86°F
95°F
25 °C
30 °C
35 °C
11.30 %
11.28 %
11.25 %
19.2°F
26.1°F
32.9°F
-7.1 °C
-3.3 °C
0.5 °C
Stabilization time
104°F
113°F
122°F
40°C
45°C
50°C
11.21
11.16
11.10
104°F
113°F
122°F
40 °C
45 °C
50 °C
11.21 %
11.16 %
11.10 %
39.6°C
46.2°F
52.9°F
4.2 °C
7.9 °C
11.6 °C
13