elysator PUROTAP profi, Installation Function Operation Service, Page: 6 / 11

0 l
750 l
1’500 l 2’250 l 3’000 l 3’750 l 4’500 l 5’250 l 6’000 l 6’750 l 7’500 l 8’250 l 9’000 l 9’750 l
10’500 l 11’250 l 12’000 l 12’750 l 13’500 l 14’250 l 15’000 l
°fH °dH
5°
10°
20°
30°
35°
40°
45°
50°
25°
15°
3°
6°
11°
17°
20°
22°
25°
28°
14°
8°
0 l
500 l
1’000 l 1’500 l 2’000 l 2’500 l 3’000 l 3’500 l 4’000 l 4’500 l 5’000 l 5’500 l 6’000 l 6’500 l 7’000 l 7’500 l 8’000 l 8’500 l 9’000 l 9’500 l
10’000 l
°fH °dH
5°
10°
20°
30°
35°
40°
45°
50°
25°
15°
3°
6°
11°
17°
20°
22°
25°
28°
14°
8°
7
3 3
140 m à 1°fH 80 m à 1 °dH
3 3
70 m à 1°fH 40 m à 1 °dH
Determining water hardness
Water is electrically conductive because it contains dissolved solids (salts). It is mainly lime in drinking
water. Therefore the water hardness can be read from the salt content.
The more the
water conducts So hard
the water
Level of hardness
French / German
Gram per 1’000 l
So much lime
is in the water Classification
1.7
4.2
6.4
8.4
10.5
12.6
16.0
16.9
19.0
21.1
23.3
25.3
°dH
°dH
°dH
°dH
°dH
°dH
°dH
°dH
°dH
°dH
°dH
°dH 38
75
113
150
188
225
285
300
338
375
415
450
very soft
very soft
soft
soft
moderately hard
moderately hard
slightly hard
slightly hard
hard
hard
very hard
very hard
75
150
225
300
375
450
575
600
675
750
825
900
50
100
150
200
250
300
350
400
450
500
550
600
3.8
7.5
11.3
15.0
18.8
22.5
28.5
30.0
33.8
37.5
41.5
45.0
g
g
g
g
g
g
g
g
g
g
g
g
This value
is measured
dissolved solids
(salt content)
TDS ppm
°fH
°fH
°fH
°fH
°fH
°fH
°fH
°fH
°fH
°fH
°fH
°fH
The conversion of TDS into water
hardness only provides an esti-
mated value and is only possible
in untreated drinking water.
Other water contains other dis-
solved solids in addition to lime.
Since PUROTAP removes all salts,
capacity in such cases is much
lower.
Why the capacity calculation?
1. In order to know the amount of resin
needed for the demineralisation of the
system water.
2. In order to know the capacity of a
resin fill-up that does not have to be
monitored.
3 A capacity of 140 m at 1°fH means that
for a water hardness of 20 °fH, for exam-
ple, the value of 140 must be divided by
20, in order to determine a capacity of
3
7m . At 40°fH, the capacity would still
3
be 3.5 m .
Calculating
capacity
PUROTAP profi 50 capacity
Litres of demineralised (completely desalinated) water
per cartridge
Tot
al har
dness
Tot
al har
dness
PUROTAP profi 25 capacity
Litres of demineralised (completely desalinated) water
per cartridge
Tot
al har
dness
Tot
al har
dness
electric conductivity
µS