Residual chlorine
Cl
-
0
0.2
mg/l
Calcium sulphate
CaSO
4
0
100
mg/l
Metallic impurities
0
0
mg/l
Solvents, diluents, soaps, lubricants
0
0
mg/l
*
Values depending on specific conductivity; in general: TDS
≅
0.93 *
σ
20
; R
180
≅
0.65 *
σ
20
**
Not lower than 200% of the chloride content in mg/l of Cl
-
***
Not lower than 300% of the chloride content in mg/l of Cl
-
Table 12
Limit values for the supply water with medium-low conductivity I the immersed electrode humidifier.
Substance
Minimum
Maximum
Potential of hydrogen pH
7
8.5
Specific conductivity at 20°C
σ
R, 20°C
125
500
μ
S/cm
Total dissolved solids TDS
*
*
mg/l
Dry residue at 180°C
R
180
*
*
mg/l
Total hardness TH
CaCO
3
50 **
250
mg/l
Temporary hardness
CaCO
3
30 ***
150
mg/l
Iron + Manganese
Fe + Mn
0
0.2
mg/l
Chlorides
Cl
0
20
ppm
Silica
SiO
2
0
20
mg/l
Residual chlorine
Cl
-
0
0.2
mg/l
Calcium sulphate
CaSO
4
0
60
mg/l
Metallic impurities
0
0
mg/l
Solvents, diluents, soaps, lubricants
0
0
mg/l
*
Values depending on specific conductivity; in general: TDS
≅
0.93 *
σ
20
; R
180
≅
0.65 *
σ
20
**
Not lower than 200% of the chloride content in mg/l of Cl
-
***
Not lower than 300% of the chloride content in mg/l of Cl
-
INNOV@-DHF-IOM-0922-EN
• 20•
