JUMO flowTRANS MAG H01, Руководство по эксплуатации

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4 Mounting
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4.5.5 Plastic tubes, non-metallic tubes or tubes with insulating lining
Using the example of the dual-compartment transmitter housing
1. Install the sensor with grounding washer (3) in the pipeline.
2. Connect the terminal lug (2) on the grounding washer (3) and the ground terminal (1) on the sensor
with the earth strap.
3. Establish the connection between the ground terminal (1) on the sensor and a suitable grounding
point using a copper wire [at least 2.5 mm2 (14 AWG)] according to the figure.
4.5.6 Grounding devices with protection washers
Protection washers provide edge protection for the measuring pipe lining, e.g. in case of abrasive media.
Beyond this, they act as grounding washers and need to be electrically connected in the same way.
4.5.7 Grounding with conductive PTFE grounding washer
Optionally, grounding washers made of conductive PTFE are available in the nominal width range DN 10
through 250. Assembly is identical to that of conventional grounding washers.
4.5.8 Devices with advanced diagnostics functions
IMPORTANT (NOTE)!
For plastic lines or pipelines with insulating lining, the measurement medium is to be grounded via the
grounding electrodes that must be installed in the device (option).
If the pipe section is not free from external interference voltages, it is recommended that one grounding
washer is fitted in front of the sensor and one is fitted behind the sensor.
If grounding electrodes are used, then the grounding washer is not needed.
(1) Ground terminal
(2) Terminal lug
(3) Grounding washer
IMPORTANT (NOTE)!
Grounding conditions may deviate for devices with advanced diagnostics functions. For further informa-
tion
 see chapter 9 "Advanced diagnostics functions", page 153.