User manual

OPERATING INSTRUCTION
Technical changes reserved
0141 0315-199 09/2014
Humidity reference cells
for adjustment of humidity sensors
9. Salt tables (summary)*
Salt Lithium chloride LiCl Potassium acetate
C
2
H
3
KO
2
Temp. [°C] Humidity value [% RH] Humidity value [% RH]
20 11,31 23,11
23** 11,31 22,75
25 11,30 22,51
30 11,28 21,61
35 11,25 ---
40 11,21 ---
Salt Magnesiumchloride
MgCl
2
Potassiumcarbonate
K
2
CO
3
Temp. [°C] Humidity value [% RH] Humidity value [% RH]
20 33,02 43,16
23** 32,88 43,16
25 32,78 43,16
30 32,44 43,17
35 32,05 ---
40 31,60 ---
Salt Magnesium nitrate
Mg(NO
3
)
2
Sodium chloride NaCl
Temp. [°C] Humidity value [% RH] Humidity value [% RH]
20 54,38 75,47
23** 53,49 75,36
25 52,89 75,29
30 51,40 75,09
35 49,91 74,87
40 48,42 74,68
Salt Potassium chloride KCL Potassium nitrate KNO
3
Temp. [°C] Humidity value [% RH] Humidity value [% RH]
20 85,11 94,62
23** 84,65 94,00
25 84,34 93,58
30 83,62 92,31
35 82,95 90,79
40 82,32 89,03
Salt Potassium sulphate
K
2
SO
4
Temp. [°C] Humidity value [% RH]
20 97,59
23** 97,41
25 97,30
30 97,00
35 96,71
40 96,41
* Reference: Greenspan, NIST – USA
** Note: The value for 23 °C can be linearly interpolated from value of
20 °C and 25 °C.
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