Altometer
8
The flowmeter with terminal compartment in type of protection EEx e is default
delivered with two EEx e certified cable glands and one EEx e stopping plug.
The flowmeter with terminal compartment in type of protection EEx d is default
delivered with one EEx d stopping plug and two temporarily plugs. The two
temporarily plugs - only for transport and storage - must be replaced by suitable
EEx d certified glands, plugs or conduit accessories before the flowmeter is taken
into service.
Unused openings shall be closed by suitable certified closing elements.
The wiring of the compact flowmeter has to be conform the requirements specified in
the relevant national or regional standard for electrical installations in hazardous
areas, e.g. EN 60079-14. From this standard section 9 (Wiring systems) is valid for
all types of protection. Section 10 (additional requirements for type of protection "d" -
Flameproof enclosures), section 11 (additional requirements for type of protection "e"
- Increased safety) and section 12 (additional requirements for type of protection "i" -
Intrinsic safety ) are valid for EEx e, EEx d or EEx i connection compartments
respectively.
The compact flowmeter Optiflux 4300 C-EEx must always be included in the
equipotential bonding system of the hazardous area. This can be achieved internally
- by means of the PE conductor of the mains system connected to the internal PE
clamp - or externally - by means of a separate equipotential bonding conductor
connected to the external PE clamp under the converter housing. A separate bonding
conductor must have a cross sectional area of at least 4 mm
2
.
