JUMO flowTRANS MAG H01, Руководство по эксплуатации

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51
4 Mounting
4.5.9 Installation and grounding in pipelines with cathodic corrosion protection (CCP)
The installation of electromagnetic flowmeters (EMF) in systems with cathodic corrosion protection must
be carried out according to the respective system conditions. In particular, the following factors are cru-
cial here:
a) Pipelines with an electrically conducting or insulating liner
b) Pipelines completely or largely on CCP potential or mixed systems with areas on CCP potential and
such systems on PE potential
Internally insulated pipelines with cathodic protection potential
In the case of internally insulated, lined pipes free of external current, the EMF should be installed with
grounding washers upstream and downstream of the EMF in the pipeline. The grounding washers must
be insulated with respect to the pipeline flange and connected to the sensor and functional ground. The
screw bolts for the flange connections must be installed in an insulated manner. Insulating washers and
insulating pipe are not included in the scope of delivery. They must be provided by the customer.
The CCP potential must be bypassed by transmitter cable "A" around the insulated sensor.
(1) Pipeline flange (6) Insulating washer
(2) Insulating washer (7) Flange
(3) Seal/insulating ring (8) Lining
(4) Grounding washer (9) Insulation
(5) Insulating pipe (10) Sensor
(1) Insulated pipeline A Transmitter cable CCP potential ≥ 4 mm
2
Cu,
not included in scope of delivery; to be provid-
ed by customer
(2) Functional ground
(3) Grounding washer
B Insulated screw bolts without grounding
washer
(1) (2) (3)
(4) (5) (
6
)
(
7
) (8)
(9)
(10)
(1)
(2)
(1)
(3)
CCP CCP