10
9. Preliminary work
Before the installation of the meter please make sure that the following steps
has been observed:
1.
Remove the plastic cover sheets the inlet and outlet of the meter.
2.
Inspect the meter for completeness (e. g. plugs, provided oil volume)
and for absence of any transport damages.
3.
Clean the flange surfaces (e. g. with petroleum).
4.
Check by blowing into the meter that turbine rotor rotates easily and stops smoothly.
5.
Prior to the meter’s installation check that no contaminations, condensate, dirt and debris
are in the pipe. Especially the cleaning of elbows in vertical installations is important
to prevent damage of the meter by contaminations, dirt and debris passing. A cone-shaped
start-up sieve may be installed for initial operation. After 4-6 weeks it should be removed
to avoid perturbations of the flow profile with resulting decrease of the accuracy.
6.
Make sure that there is no intrusion of the sealing element into the pipe during installation
and operation (concentric mounting).
7.
Check that in addition to the meter-length there is enough installation space for
the two seals between inlet and outlet flanges.
8.
The meter must be installed stress-free. Therefore in addition to point 7 observe strictly the
proper alignment of the Quantometer’s inlet to outlet axis with the connecting piping axis.
Necessary equipment fort he meter installation:
1.
Suitable and certified gaskets:
•
Dimensions according DIN EN 1514-1 or DIN 2690
2.
Screws according DIN ISO 4014 and ASME B 1.1
3.
Nuts according DIN EN ISO 4032 and ASME B 1.1
DN
Pressure
Flanges according ANSI B 16.5
[mm]
ANSI Class
Stud bolts with continuous thread and nuts
Min. Operating
Number
Strength
Strength
temperatur of
of screws
class
class
the
screws screws
screws
and nuts
25
150
- 25°C
4 x M12
ASTM A 193
ASTM A 194
Grade
B7
Grade
2H
50
150
- 25°C
4 x M16
ASTM A 193
ASTM A 194
Grade
B7
Grade
2H
80
150
- 25°C
8 x M16
ASTM A 193
ASTM A 194
Grade
B7
Grade
2H
100
150
- 25°C
8 x M16
ASTM A 193
ASTM A 194
Grade
B7
Grade
2H
150
150
- 25°C
8 x M20
ASTM A 193
ASTM A 194
Grade
B7
Grade
2H