KMF (E5.2) 06/2014
page 65/99
12. Humidity system
The humidity system is turned on with the humidity switch (3) located in the right lateral control panel.
The constant climate chamber KMF is equipped with a capacitive humidity sensor. This results in a con-
trol accuracy of up to
±
3 % r.H. of the set point. The temperature-humidity diagrams (Figure 19) show the
possible working ranges for humidity.
The preset temperature and humidity values should be situated within the optimum range
(hatched range in Figure 19).Only within this area will the unit not be exposed to excessive
moisture due to condensation.
In the short-term set points outside the optimum range can also be targeted. The control accu-
racies of
±
3 % r.H., however, cannot be guaranteed in this case.
0
10
20
30
40
50
60
70
80
90
100
10
20
30
40
50
60
70
80
90
100
% r.H.
°C
A
B
C
D
Figure 19: Temperature-Humidity diagram KMF
Range A: Ensured condensation free range
Range B: Temporary usable operation (up to 24 h)
Range C: In this range, condensation in the inner chamber is possible
Range D: In this range, deviations of the technical data are possible
Heat emission of electrical devices connected inside the chamber may modify the temperature
and humidity range.
Entry of the humidity set-point 0 % in defined program sections permits completely turning off
humidity in Program Mode and thus attaining faster temperature changes.
The constant climate chamber KMF is equipped with a door heating system to prevent condensa-
tion in the door area.
If the set points for temperature or humidity are outside the optimum range, condensation can arise in the
door area.
