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10.2.
Equilibrium humidity values of the
SAL-T humidity source
11. Troubleshooting
11.1. What is wrong when ....?
The calibration of the aw-value
is not possible?
You have a drift of the aw-value
after completing the analyzing
process?
Reading of the LCD screen
is very bad?
Bez. des
Novasina
EU Gef.
Standards
Typ
Klasse
SAL-T / 4
SC-4
T
SAL-T / 6
SC-6
Xn
SAL-T / 11
SC-11
Xn
SAL-T / 33
SC-33
--
SAL-T / 53
SC-53
O
SAL-T / 75
SC-75
--
SAL-T / 90
SC-90
T
SAL-T / 97
SC-97
--
SAL-T / 98
SC-98
T+/N
Lit :
A : Greenspan, Humidity Fixed points of Binary Saturated Aequeous Solutions
Journal of Research of the National Bureau of Standards Vol. 81A, No1 01/02 1977
B : Robinson R.A. and Stokes R.H. Electrolyte Solutions, Butterworths London 1959
C : Wexler, Humidity and Moisture Vol.3, Fundamentals and Standards, Robert E.Krieger,
1. The sensor is protected by a password
2. The sensor is defective or contaminated and has
to be repalced
1. The stability obsevation factor is set too short
2. The temperature of the probe is not in equilibrium
3. The probe has a second sorption step
1. The contrast of the screen is very low
2. The ambient light is bad. Please change the place of the
instrument
Farbe
Chemische
% relative Feuchte in Relation
des
Symbole
zur Remperatur (x / 100 in a
Salz
15°C
20°C
weiss
CsF (>25%)
4.3
3.8
weiss
LiBr
6.9
6.6
weiss
LiCl
11.3
11.3
blau
MgCl
-6H
O
33.3
33.1
2
2
grün
Mg(NO
)
-6H
O 55.9
54.4
3
2
2
violett
NaCl
75.6
75.5
weiss
Ba(Cl)
-2H
O
90.9
90.5
2
2
gelb
K
SO
(>20%)
97.9
97.6
2
4
orange
K
Cr
O
98.5
98.2
2
2
7
Literatur
)
Referenz
w
25°C
30°C
3.4
3.0
A
6.4
6.2
A
11.3
11.3
A
32.8
32.4
A
52.9
51.4
A
75.3
75.1
A/B
90.1
89.9
C
97.3
97.0
A
98.0
98.0
A
31
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