سنسورکروهنه_ optiflux 4300 cمدل krohne

OPTIFLUX 2300 C / 4300 C is certified as a group II, category 2 GD equipment, if fitted with an IFC
300 signal converter without Ex ia signal in/outputs or as a group II, category 2 (1) GD equipment,
if fitted with a signal converter with Ex ia signal in/outputs.
It is therefore suitable for installation in gas hazardous areas zone 1 or 2, gas group IIC,
temperature class T6 (or T5)...T3 and dust hazardous areas zone 21 or zone 22, surface
temperature T85...150°C. Additionally, the Ex ia signal inputs/outputs of the signal converter
may run or originate from a Zone 0 Gas hazardous area.
Converter housing, connection co Converter housing, connection compartment: mpartment: with power supply (terminals L, N / L+, L-) and I/O
connections (terminals A, A+, A-, B, B-, C, C-, D and D-):
Ex e (Increased safety), optionally: Ex d (Flameproof Enclosure). For certain versions of the
signal converter the terminals A, A+, A-, B, B-, C, C-, D and D- are additionally Ex ia (Intrinsic
safety). Consult the table with the CG numbers for more details.
Converter housing, electronics compartment: Ex d (Flameproof enclosure).
EEx marking OPTIFLUX 2300 C / 4300 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, 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, in type of protection "Intrinsic safety" (Ex ia), terminals 1, 2, 3, and 4:
Ui
= 20 V , I
i
= 175 mA, Ci
≈ 0 nF, Li
≈ 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 for the electrode circuit is - as intrinsic safe circuit - marked with a blue O-ring.