KROHNE ALTOFLUX IFS 4005 EN - Manual (Page 7)

7
5 Installation in the pipeline
• Installation material not included, to be provided by customer (stud bolts,
nuts, gaskets, etc.)
• Pipe flanges and operating pressure: refer to tables on ”limits” in Section 11.
• Distance between pipe flanges
see fitting dimension ”a”, in Section 10 ”Dimensions and weights”.
• High-temperature pipelines
Where process temperatures exceed 100 °C/212 °F, provide for facilities to
compensate for longitudinal expansion on heat-up of the pipeline.
For short pipelines use resilient gaskets and
for long pipelines install flexible pipe elements (e.g. elbows).
L
max
L
min
• Position of flanges
Install flowmeter in line with the pipe
axis. Pipe flange faces must be
parallel to each other,
max. permissible deviation:
L
max
- L
min
≤≤
0.5 mm
≤
0.02”
• Neoprene liners
Process temperatures below - 5 °C (+ 23 °F) are only permissible if the pipeline
is supported on both sides of the flowmeter and provided there is only slight
vibration and no water hammer in the pipe.
• Teflon ® -PTFE liners
Install at the lowest point of the pipe run to avoid an excessive vacuum condition at
the meter. Do not remove or damage liner, which is formed around the flange edges.
• Irathane liner, thickness > 12 mm / > 0.50”
The nominal diameter of the pipe flanges must be greater than the nominal diameter
of the measuring tube, see tables in Section 10 ”Dimensions and weights”.
• Gaskets
Use gaskets suitable for the application and appropriate to the liner, not included
with flowmeter, to be provided by customer.
• Grounding rings / protective rings (option)
On plastic pipes and internally coated metal pipelines, grounding rings must form the
conductive connection with the fluid. Refer to Section 7 ”Grounding for electrical connection.
Grounding ring No. 1 Grounding ring, protective ring No. 2 Grounding ring, protective ring No. 3
3 mm/0.12” thick for flowmeters with Teflon ® -PTFE with cylindrical neck, to protect the liner
liner, solidly fitted to the flanges, particularly at the inlet edge against
3 mm/0.12” thick abrasive products, 3 mm/0.12” thick.
Length:
1 30 mm/1.18”, for
≤
DN 300,
≤
12“
100 mm/3.94”, for
≥
DN 350,
≥
14“
Teflon ® is a registered trademark of Du Pont.