VA Master FAM540
METAL CONE VARIABLE AREA FLOWMETER | OI/FAM540-EN REV. E
11
Opening and closing the transmitter housing
DANGER
Danger of explosion if the device is operated with the
transmitter housing open!
Before opening the transmitter housing, bear in mind the
following:
• A valid fire permit must be present.
• Make sure that there is no explosion hazard.
• Switch off the power supply and wait for t > 2 minutes
before opening.
WARNING
Risk of injury due to live parts!
When the housing is open, contact protection is not provided
and EMC protection is limited.
• Before opening the housing, switch off the power supply.
Before opening the housing cover, remove the cover protector,
and reattach it after closing the housing cover.
Only original spare parts must be used to seal the housing.
Note
Spare parts can be ordered from ABB Service.
www.abb.com/contacts
Cable entries
The devices are connected electrically using a cable gland or
alternatively by using conduit systems with pipe fittings.
For this purpose, the devices are delivered with cable glands or
alternatively with ½“ NPT connection threads for pipe fittings.
ATEX / IECEx-approved flameproof cable glands made from
metal are supplied with device versions that have type of
protection Ex-d ‘Flameproof enclosure’ (order code A9).
ATEX / IECEx-approved cable glands made from plastic are
supplied with device versions that have the Ex-ia and Ex-nA type
of protection.
The various connection possibilities depend on the device-
specific configuration of the explosion protection and the
‘Housing material / cable connection’ option in accordance with
the ordering information in data sheet DS/FAM540.
To ensure proper routing of cables, the following cable
diameters are required:
• Ex-d design: 7.2 to 11.7 mm (0.28 to 0.46 in)
• Other designs: 5.0 to 9.0 mm (0.20 to 0.35 in)
Devices with ½” NPT threads and ATEX and IECEx approvals can
be ordered and operated without cable glands (with the
exception of ‘Ex d’). In this case, the operator is responsible for
properly installing pipe fittings in accordance with national
regulations (e.g. NEC, CEC, ATEX137, IEC60079-14, etc.).
