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3. Installation
3.1. Warning
DANGER
Escaping compressed gas
Risk of serious or even fatal injury from contact with escaping compressed gas or from unsecured plant
components.
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3.1.1. Requirements for piping
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Correctly dimensioned gaskets.
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Correctly installed and aligned flanges and gaskets.
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Differences in pipe diameters at joints should not exceed 1 mm. For more information, see ISO 14511.
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Clean, properly installed pipes.
3.1.2. Requirements for inlet/outlet sections
The table below shows the required inlet pipe sections with reference to the direction of flow.
Table of additional inlet pipe sections required in specific cases
Flow obstruction upstream of measuring
section
Slight bend
(angle < 90°)
Reduction
(pipe diameter becomes smaller towards
measuring section)
Enlargement
(pipe diameter becomes larger towards
measuring section)
90° elbow section
or T-piece
2x 90° elbow sections
in a plane
2x 90° elbow sections
change of direction in 3 dimensions
Shut-off valve
12 x D
15 x D
45 x D
17
Before carrying out any assembly, installation or maintenance work, depressurise the system. Such
work must be carried out by authorised specialist technical personnel only (see „Safety instructions"
auf Seite 5).
From 10 bar, install a high-pressure protection element for safe installation and removal of the device.
Tighten the slotted spring pin with a torque of 20-30 Nm (WS 27).
Use only pressure-resistant installation materials and suitable tools that are in proper working order.
Before pressurising the system, check all unit parts and repair them, if necessary. Open valves slowly
to prevent pressure blows during operation.
Minimum length of inlet pipe section
5 x D
5 x D
NOTICE
5 x D
(L1)
12 x D
15 x D
15 x D
15 x D
20 x D
35 x D
45 x D
15 x D
5 x D
5 x D
20 x D
Deviating measurements
The above values are required minimum values. If the
recommended settling sections cannot be implemented, the
measuring deviations might be much greater.
Installation and operating manual
Minimum length of outlet pipe
section (L-L1)
5 x D
5 x D
5 x D
5 x D
5 x D
5 x D
5 x D
5 x D
15 x D
35 x D
5 x D
METPOINT
SF53
®
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