11
DN
Pressure class
Flanges according DIN EN 1092-1
[mm]
PN
Hexagon screws and nuts
Min. operating
Number
Strength
Strength
temperatur of
of screws
class
class
the
screws screws
screws
and nuts
25
16
- 10°C
4 x M12
5.6 / 8.8
5 / 8
50
16
- 10°C
4 x M16
5.6 / 8.8
5 / 8
80
16
- 10°C
8 x M16
5.6 / 8.8
5 / 8
100
16
- 10°C
8 x M16
5.6 / 8.8
5 / 8
150
16
- 10°C
8 x M20
5.6 / 8.8
5 / 8
DN
Pressure class
Flanges according DIN EN 1092-1
[mm]
PN
Hexagon screws and nuts
Min. operating
Number
screw
screw
temperatur of
of screws
material
material
the
screws
and nuts
25
16
- 40°C
4 x M12
25CrMo4
25CrMo4
50
16
- 40°C
4 x M16
25CrMo4
25CrMo4
80
16
- 40°C
8 x M16
25CrMo4
25CrMo4
100
16
- 40°C
8 x M16
25CrMo4
25CrMo4
150
16
- 40°C
8 x M20
25CrMo4
25CrMo4
During Installation of the meter has to been checked:
1.
The meter is mounted in the right flow direction.
2.
The meter is installed gas-tight.
3.
The meter is installed stress-free.
•
In horizontal pipes the meter is installed with the index head upright.
In case of vertical installations the oil pump must be mounted in upright position
(if the meter is equipped with an oil pump).
•
Connecting screws and nuts must be tightened crosswise.
•
For connecting the pressure test point please refer to chapter 15.
•
For connecting the temperature test point please refer to chapter 16.
A protective cover is recommended for outdoor installation especially when
the meter is mounted together with a volume corrector.
After installation of the meter:
Welding of piping and flanges nearby
the Quantometer is not allowed.