Hazardous area supplement to the QuickStart
OPTIFLUX 2
EEx-marking OPTIFLUX 4300 C
Nominal diameter
EEx e or EEx ia connection compartment
EEx d connection compartment
10-20
EEx dme [ia] IIC T6..T3
EEx dme [ia] IIC T6..T3
25-150
EEx de [ia] IIC T6..T3
EEx d [ia] IIC T6..T3
200-300
EEx dqe [ia] IIC T6..T3
EEx dqe [ia] IIC T6..T3
350-3000
EEx de [ia] IIC T6..T3
EEx de [ia] IIC T6..T3
Optional:
25-150
EEx dqe [ia] IIC T5..T3
EEx dqe [ia] IIC T5..T3
200-300
EEx de [ia] IIC T6..T3
EEx de [ia] IIC T6..T3
1.3
OPTIFLUX 5300
OPTIFLUX 5000 and OPTIFLUX 5300 C are certified as category 2 GD equipment for gas hazardous areas classified as
zone 1 and 2, gas group IIC, temperature classes T6 … T3 and dust hazardous areas zone 21 and 22, surface temperature
T85°C .. 180°C.
The connection box of the flow sensor OPTIFLUX 5000 contains terminals for the connection of the field current and
electrode circuits:
Field current circuits
, in type of protection "Increased safety" (EEx e), terminals 7,8 and 9: U < 40 V (switched DC voltage,
alter40 and -40 V), I = 125 mA (injected square wave current)
Electrode terminals
, in type of protection "Intrinsic safety" (EEx ia), terminals 1, 2, 3, and 4: Ui = 20 V, Ii = 175 mA, Ci
≈
0
nF, Li
≈
0 mH.
Connection box, electrode terminals
1, 2, 3 and 4: EEx ia (Intrinsic Safety)
Connection box, field coil terminals
7, 8 and 9: EEx e (Increased safety)
The cable gland for the electrode circuits is - as intrinsic safe circuit - marked with a blue O-ring.
EEx marking OPTIFLUX 5000
Nominal diameter
2,5-15
II 2 GD EEx me ia IIC T6..T3 T85..180°C
25-100
II 2 GD EEx de ia IIC T6..T3 T85..180°C
In the coil housing (flow sensor) following types of protection are used: DN 2,5-15: EEx me, DN 25-100: EEx d
The electrode circuits in the coil housing are always in type of protection EEx ia.
EEx-marking OPTIFLUX 5300 C
Nominal diameter
EEx e or EEx ia connection compartment
EEx d connection compartment
2,5-15
EEx dme [ia] IIC T6...T3
EEx dme [ia] IIC T6...T3
25-100
EEx de [ia] IIC T6...T3
EEx d [ia] IIC T6...T3
1.4
IFC 300
EEx marking for all versions is II 2 GD EEx de [ia] IIC T6 T85°C for converter with non EEx ia signal inputs/outputs or II 2
(1) GD EEx de [ia] IIC T6 T85°C for converter with EEx ia signal inputs/outputs.
In the IFC 300 F-EEx flow converter following types of protection are used;
Field current circuit:
in type of protection “Increased safety” (EEx e), terminals 7, 8 and 9: U < 40 V (switched DC voltage,
alter40 and -40 V), I = 125 mA (injected square wave current). The field current source is protected by 2 TR5 fuses,
rated value 160 mA. The maximum prospective short circuit current is restricted to 35 A.
Electrode terminals:
in type of protection “Intrinsic safety” (EEx ia), terminals 1, 2, 20, 3, 30, 4 and 40: U
o
= 14 V, I
o
= 70
mA, P
o
= 300 mW (linear), C
o
= 430 nF, L
o
= 2 mH.
Converter housing, connection compartment:
with power supply (terminals L, N / L+, L-) and I/O connections (terminals
A, A+, A-, B, B-, C, C-, D and D- ): EEx e (Increased safety). Optionally compact flowmeters, e.g. OPTIFLUX 4300 C and
OPTIFLUX 5300 C have EEx d (Flameproof Enclosure). For certain versions of converter IFC 300-EEx the terminals A, A+,
A-, B, B-, C, C-, D and D- are additionally EEx ia (Intrinsic safety). Consult the table with CG30 numbers for details.
Converter housing, electronics compartment
: EEx d (Flameproof enclosure)
Connection box, electrode terminals
1, 2, 20, 3, 30, 4 and 40: EEx ia (Intrinsic safety)
Connection box, field current terminals
7, 8 and 9: EEX e (increased safety)
