KROHNE OPTIFLUX 2000-4000-5000-6000 -IFC 100 Ex EN - Manual (Page 7)

INTRODUCTION
1
7
OPTIFLUX
www.krohne.com 04/2009 - 7.30685.22.00 - EX IFC 100 en
1.4 OPTIFLUX 2000 / 4000
1.4.1 Compact versions
OPTIFLUX 2100 C / 4100 C is certified as a group II, category 2G / 2D equipment.
It is therefore suitable for installation in gas hazardous areas zone 1 or 2, gas group IIC,
temperature class T4 and T3 and dust hazardous areas zone 21 or zone 22, surface temperature
T120°C.
The connection compartment contains terminals for power, status / pulse / current, sensor coils
(all in type of protection Ex e) and sensor signal (in type of protection Ex ia).
Ex marking OPTIFLUX 2100 C / 4100 C:
1.4.2 Field versions
OPTIFLUX 2000 F / 4000 F is certified as group II, category 2 GD equipment for gas hazardous
areas zone 1 and 2, gas group IIC, temperature classes T6 (or T5) ... T3 and dust hazardous areas
zone 21 and 22, surface temperature T85…150/160/180°C.
The connection box contains terminals for the connection of the field current and electrode
circuits:
Field current circuit
Field current circuit Field current circuit Field current circuit, in type of protection "Increased safety" (Ex e), terminals 7, 8 and 9:
U < 40 V (switched DC voltage, alternately +40 and -40 V), I = 125 mA (injected square wave
current),
Electrode terminals
Electrode terminals Electrode terminals Electrode terminals, in type of protection "Intrinsic safety" (Ex ia), terminals 1, 2, 3 and 4:
U
i
= 20 V, I
i
= 175 mA, C
i
≈ 0 nF, L
i
≈ 0 mH.
The before mentioned intrinsically safe circuits shall, from the safety point of view, be
considered to be connected to ground.
The cable gland
cable gland cable gland cable gland for the electrode circuit is - as intrinsic safe circuit - marked with a blue O-ring.
EEx marking OPTIFLUX 2000 F / 4000 F:
Nominal diameter Nominal diameter Nominal diameter Nominal diameter EEx e connection compartment, EEx e connection compartment, EEx e connection compartment, EEx e connection compartment,
II 2 GD or II 2(1) GD
10...20 ("mb") Ex e ia mb IIC T4
25...150 ("d") Ex d e ia mb IIC T4
200...300 ("q") Ex e ia mb q IIC T4
350...3000 ("e") Ex e ia mb IIC T4
Optional:
25...150 ("qe") Ex e ia mb q IIC T4/T3
200...3000 ("e") Ex e ia mb IIC T4
Additionally:
All diameters: Ex tD A21 IP64 T120°C
Nominal diameter Nominal diameter Nominal diameter Nominal diameter II 2 GD
10...20 ("me") EEx me ia IIC T6...T3 T85...150°C
25...150 ("d") EEx de ia IIC T6...T3 T85...180°C
200...300 ("qe") EEx qe ia IIC T6...T3 T85...150°C
350...3000 ("e") EEx e ia IIC T6...T3 T85...160°C
Optional:
25...150 ("qe") EEx qe ia IIC T5...T3 T85...180°C