KROHNE BATCHCONTROL 5014 C - Manual (Page 6)

Installation and operating instructions 6 BATCHCONTROL
Part A System installation and start-up
1 Installation in the pipeline
1.1 Important information
The following recommendations should be observed to ensure proper functioning of the
flowmeter – PLEASE NOTE.
•
Measuring tube must be filled
completely at all times.
•
Direction of flow: the blue arrow on the
housing of the primary head must point in
the direction of flow. If for structural
reasons the flowmeter can only be installed
invers to the direction of flow, the direction
of flow measurement can be reprogram-
med.
•
Stud bolts and nuts: to fit, make sure
there is sufficient room next to the pipe
flanges.
•
Vibration: support the pipeline on both
sides of the flowmeter. Vibration level to
IEC 068-2-34: below 2,2g in the
20 - 2000 Hz frequency range.
•
Radiant heat: avoid e.g. from hot product
tanks, insulate if necessary.
•
Avoid strong electromagnetic fields
in vicinity of flowmeter.
•
Straight Inlet run
≥ 5 x DN and straight
outlet run
≥ 2 x DN, measured from the
electrode axis (DN = meter size).
•
Vortex or corkscrew flow: increase
length of inlet and outlet runs or install flow
straighteners.
•
Mixing different process liquids: install
flowmeter upstream of mixing point or at an
adequate distance downstream, minimum
of 30 x DN (DN = meter size), otherwise
display may be unsteady.
•
Plastic pipes and internally coated metal
pipes: grounding rings required, see
“Grounding“, Section 1.3.3.
•
Heat-insulated pipelines: do not insulate
flowmeter.
•
Zero setting: not required. For checking
purpose, it should be possible to set “zero“
flow velocity in the completely filled
measuring tube. Shutoff valves should
therefore be provided either downstream or
upstream and downstream of the
flowmeter.
•
Ambient temperature
-25°C to +60°C
•
Process temperature
max. 140 °C
•
Transport and storage temperature
-25°C to +60°C
Limits imposed by the material used for the
measuring tube for process temperature,
thermal shock limit, pressure and vacuum, see
Section D page 22.
Please note!
The ceramic measuring tube must not contact
metal parts (flange, pipeline). This can destroy
the flowmeter!
1