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WARNING:
Do not drop or hit the flow meter during installation. It
may result in damage to the installed PEA or SMC.
NEVER
remove the PEA from the mounting nozzles.
3.5. Electrical installation of the flow meter
3.5.1. The communication cable of the flow meter is connected to the SMC in
the manufacturer. A round cable with an outer diameter from 3.0 to 6.5
mm is used as a communication cable.
3.5.2. External communication cable (SMCs are external devices) must be
routed according to the operating conditions of the flow meter.
3.5.3. It is not recommended that the excess part of the cable be wound up with
rings.
3.5.4. The external cable is attached to the wall as far as possible. It is recom-
mended to place the cable in a metal or plastic pipe (hose) to protect it
from mechanical damage.
DO NOT
route the signal cable near power circuits or in the presence
of high level electromagnetic interference (e.g. in the presence of a thy-
ristor regulator) without laying it in an earthed steel pipe or metal hose.
WARNING:
To ensure the declared degree of protection of the flow
meter during installation, the following requirements must be met:
- The seal on the back of the SMC front panel must be clean and undam-
aged
- Before installing the front panel on the SMC enclosure, check that the
seal is evenly positioned in the ring groove provided for it without tension
or protrusions, and that it does not fall out when the front panel is turned
upside down. Silicone sealant can be used to fix the sealant
- The SMC front panel should be tightened securely with screws after in-
stallation
- The cable gland packing nut must be tightened securely.
It is necessary for the signal cable to form a downward U-shaped
loop in the vertical plane (Fig.6) to prevent dripping water or condensate
from entering the SMC through the cable entry.
Fig.6. Formation of a U-shaped loop of the signal cable
