Meter Commissioning; Check On Electrical Connections; Check On Meter Housing Tightness; Check On The Installed Meter - Elis FLONET FH30 Series Project Design, Installation And Service Manual

ELIS PLZEŇ a. s.
Piping with cathodic protection
If an electromagnetic flowmeter is to be installed into piping with cathodic protection, it is necessary to
ensure that all flowmeter parts be electrically insulated from the piping. At the same time, the meter
power source shall be insulated from the power grid. To ensure the overall piping conductivity, the
installed meter shall be bypassed by Cu conductor of cross-section 6 mm
flanges before and after the flowmeter).
The fluid potential shall be equalised with the reference meter potential (the PE terminal potential) by
means of grounding rings. The grounding rings shall also be insulated from the piping.

6 METER COMMISSIONING

6.1

Check on electrical connections

Prior to meter energising, check and make sure that:
• The power network voltage complies with the specifications on the meter rating plate;
• The power network is properly protected;
• All terminals and electrical connections are properly tightened;
• The installation cables are:
o
intact,
o
connected at their ends to the correct terminals in the flowmeter and the co-operating
equipment,
o
secured against incidental excessive stress (pulling out of the respective glands), and
• The meter grounding and potential equalising has been carried out as specified in the product
manual.
6.2

Check on meter housing tightness

To attain the parameters of the equipment protection class referred to in Chapter 8 (METER
SPECIFICATIONS), the flowmeter installation shall be carried out in observance of the following
directions:
• Use only cables of external diameters corresponding to the sizes of the cable glands installed;
• Form dripping loops on the cables;
• Avoid meter installation position where the cable glands lead upwards;
• Tighten properly all covers and lids on the meter housings.
Following every service action:
• Check the condition (integrity and intactness) of all sealing elements and surfaces;
• Using suitable tooling, tighten all cable glands and meter housing covers.
6.3

Check on the installed meter

The flowmeters are supplied calibrated with verified functions and parameters set according to the
customer specifications.
Prior to the meter commissioning, inspect the meter installation site in reference to the requirements of
Section 4.4 above, and assess the possible adverse effects from the nearby technological equipment
such as:
• Undesirable meter warming by external heat sources;
• Excessive temperature stress on cable insulation;
• Vibrations and shocks in the piping, and others.
ELIS PLZEŇ a. s., Luční 425/15, 301 00 Plzeň, Czech Republic, phone.: +420 377 517 711, fax: +420 377 517 722 Es 90678K
Project design, installation and service manual
Electromagnetic flowmeter FLONET FH30xx
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(connected to the piping