IM-P330-74
MI Issue 1
1
© Copyright 2009
Printed in the UK
Flowin 2
Natural Gas Flowmeter
Essential Installation Guide
IM-P330-74
MI Issue 1
3309851/1
This document must be read in conjunction with IM-P330-73.
Warning
To avoid the risk of injury to personnel or damage to plant or equipment, the safety
information and technical data in the Installation and Maintenance Instructions
(IM-P330-73) should be read and assessed before attempting any installation work.
Caution
To avoid the risk of damage or loss of accuracy, the installation and commissioning
guidelines in the IM-P330-73 should be read and understood.
Essential installation guidelines
The flowmeter may be installed in a horizontal or vertical pipeline, with flow in any direction.
The preferred orientation for a Flowin 2 natural gas flowmeter is in a horizontal pipeline, with
the flowmeter display facing either upwards or downwards as illustrated in Figure 1.
Before powering up the Flowin 2 for the first time, complete the following checklist:
1.
Are all required connections made?
(a) Loop?
(b) Pulse? (if required)
(c) Grounding to earth of RF braiding at the Flowin end (only) of the loop and pulse cables?
(d) Flange earth connections?
2.
Are all the connections secure?
3.
Is the polarity of all connections correct?
4.
Check that the earth resistance is in accordance with the technical data in IM-P330-73.
5.
Ensure there is no possibility of a short circuit occurring when the PCB housing is refitted.
6.
Refit the PCB housing to the flowmeter body in the orientation desired before ‘powering
up’ the flowmeter.
Fig. 1
Caution:
Maximum permissible flange bolt tightening torque is 160 N m
Filter 250 micron
Downstream distance
Check valve
3'D'
Location of
flowmeter data label
Upstream distance
6'D'
D = Nominal bore of the pipe
Location of cast flow
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