KROHNE TIDALFLUX 2300 F Ex EN - Manual (Page 8)

1
INTRODUCTION
8
TIDALFLUX 2300 F
www.krohne.com 6/2013 - 7312442200 - AD EX TIDALFLUX 2300 - en - R02
1.5 IFC 300 F / PF
The IFC 300 F/PF is certified as group II, category 2G equipment, if fitted without Ex ia signal
in/outputs or as a group II, category 2(1)G equipment, if fitted with Ex ia signal inputs/outputs.
It is therefore suitable for installation in gas hazardous areas zone 1 or 2, gas group IIC,
temperature class T6.
Additionally, The Ex ia signal in/outputs of the converter may run or originate from a zone 0 gas
hazardous area.
In the IFC 300 F / PF signal converter the following types of protections are used:
Converter housing, terminal compartment:
• Power supply (terminals L, N, PE or L+, L-), in type of protection Increased safety (Ex e):
Un = 100...230 VAC or 24 VAC/DC or 12...24 VDC.
• Signal I/O (terminals A, A+, A-, B, B-, C, C-, D and D- ), in type of protection Increased safety
(Ex e) or - optional - Intrinsic safety (Ex ia).
For certain versions of the signal converter the terminals A, A+, A-, B, B-, C, C-, D and D- are
additionally in type of protection Intrinsic safety. Consult the table with CG numbers in the
handbook of the IFC 300 for details.
Converter housing, electronics compartment: Ex d (Flameproof enclosure)
Console:
• Field current circuit, in type of protection Increased safety (Ex e),
terminals 7 and 8, U < 40 V (switched DC voltage, alternately +40 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 (Ex ia),
terminals 1, 2, 20, 3, 30. U
o
= 14 V , I
o
= 70 mA, P
o
= 300 mW,
lineair characteristics C
o
= 430 nF, L
o
= 2 mH.
• Measuring sensor circuits (RS 485; E,C,D), in type of protection intrinsic safety Ex ia II C with
the following maximum values:
Terminals E, C, D; U
o
= 8V, I
o
= 108 mA, P
o
= 220 mW, C
o
= 1000 nF, L
o
= 2 mH