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General wiring rules
7 Wiring
7.1 General wiring rules
Be sure to handle the transmitter cover carefully so that there are no damages and for-
eign matter adhesion at its thread and O-ring when it is opened or attached.
Life-threatening injuries from electric shock
DANGER
▶ Switch off power supply.
▶ Secure power supply against inadvertent switch-on.
▶ Check that power supply is free of voltage.
Life-threatening injuries from ignition of explosive atmospheres
DANGER
▶ Wait 20 minutes before opening the housing until the capacitors have discharged
▶ Avoid electrostatically charging the device, e.g. by rubbing it with dry cloths.
Explosion hazard from electrostatic discharge or brush discharge
DANGER
Life-threatening injuries or ignition of explosive atmospheres
▶ Avoid actions that could lead to electrostatic discharges. For example, do not wipe
When connecting flow meters in hazardous areas, the applicable Ex instruction manual
DANGER
must be observed.
Risk of injury due to electrical shock
WARNING
▶ Only have skilled personnel to connect the flow meter.
▶ Do not perform wiring outdoors if it is raining.
Risk of injury due to electrical shock, as well as sparking and damage to
WARNING
the flow meter, if an inappropriate connecting cable is used
▶ It is imperative to adhere to the cable diameter of 0.5 – 2.5 mm for sensor and trans-
▶ The outer cable diameter must meet the specification of the cable glands used.
▶ Install cables tension-free.
Risk of sparking and damage to the flow meter due to incorrect wiring
WARNING
▶ Observe connection diagram for the connecting cable according to chapter Connec-
and components have cooled off.
the coated surface of the transmitter using a piece of cloth.
mitter connection terminals. When using Litz wire, it must be combined with wire end
ferrules.
tion terminals of connecting cable [} 33] and Connection terminals [} 35].
IM01U10A00-00EN-R, 2nd edition, 2017-08-29
Quick Reference Instruction Manual
Wiring
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