User Manual

11
METER
SIZE
SIZE & TYPE
Seal is
modelled on:
STD.
MATERIAL
TYP.
TORQUE
Nm
KFTC part/drawing ALTERN.
MAT.
TYP.
TORQUE
Nm
10 G ½” Tri-clamp PTFE 18 3.85055.00.00 None
100 G ¾” Tri-clamp PTFE 16 3.85155.00.00 Nitrile
+
Silicone
+
EPDM
+
Viton
+
8
•
•
8
300 G 1” IDF/ISS Viton 8 5.85065.00.00 Nitrile
EPDM
PTFE
9
•
11.5
800 G DN40
DIN11851
Viton 27.5 5.85117.00.00 Nitrile
EPDM
Silicone
•
24
•
1500 G 2” IDF/ISS Viton 24 5.85162.00.00 Nitrile
EPDM
PTFE
26
•
39.5
Installation lengths for sanitary connections - please contact Krohne for further details as
installation lengths depend on customer requirements.
• Typical Torque on request.
1.3 External Heating and Insulation
When installing the G+ Meter in heated and insulated pipelines, it is not generally necessary or
desirable to heat or insulate the case of the meter. This is because the central measuring tube
is not thermally coupled to the case, except at the extreme ends. It is then only necessary to
insulate the flanges as shown in the attached drawings. However, it is permissible to insulate
the case of G+ Meters and special units with heating jackets are available.
The following notes will act as a guide for use of the G+ Meter with different types of heating
and insulation systems. Please note that freezing of the product within the meter cannot
damage the meter.
1.3.1 Insulation
It is recommended that the pipework and insulation material be installed as in figure 10. The
insulation can be Rubber, Foam, Glass Fibre or any other process suitable material. It should,
however, be firmly fixed with no components such as straps or covers that can vibrate.
Figure 10
Insulation Principle