Device designs
SM/FEX300/FEX500/FM/CSA-EN FEX300, FEX500 EN - 9
3.2.2 Div.2
Risk of explosion caused by incorrect transmitter installation
The FET321 / FET521 transmitter is not approved for hazardous areas.
The FET321 / FET521 transmitter must not be installed or operated in potentially explosive
atmospheres.
Without a pre-amplifier, the maximum permissible signal cable length is 50 m (164 ft) with a
minimum conductivity of 5 µS/cm. With a pre-amplifier, the maximum permissible signal cable
length is 200 m (656 ft).
Flowmeter sensor
ProcessMaster 300 / ProcessMaster 500 HygienicMaster 300 / HygienicMaster 500
FEP325.....P.... / FEP525.....P.... FEH325.....P.... / FEH525.....P....
in hazardous area, Div. 2 in hazardous area, Div. 2
USA USA
NI: CL I, II / DIV2 / GP ABCDFG / T4 … T3 NI: CL I, II / DIV2 / GP ABCDFG / T6 … T3
CL III / DIV1, 2 / T4 … T3 CL III / DIV1, 2 / T6 … T3
CL I ZN2 AEx nA nC IIC T4 ... T3 CL I ZN2 AEx nA nC T4 ... T3
DIP: CL II, III / DIV1 / GP EFG / T 70 °C … T
medium
DIP: CL II, III / DIV1 / GP EFG / T85°C … T
medium
AEx tD 21 T70 °C ... T
medium
AEx tD 21 T70 °C ... T
medium
Canada Canada
NI: CL I, II / DIV2 / GP ABCDFG / T4 … T3 NI: CL I, II / DIV2 / GP ABCDFG / T6 … T3
CL III / DIV1, 2 / T4 … T3 CL III / DIV1, 2/ T6…T3
CL I ZN2 Ex nA nC IIC T4 ... T3 CL I ZN2 Ex nA nC T4 ... T3
DIP: CL II, III / DIV1 / GP EFG / T70 °C … T
medium
DIP: CL II, III / DIV1 / GP EFG / T85°C … T
medium
DIP A21 TA T70 °C ... T
medium
DIP A21 T
A
85 °C ... T
medium
Transmitter
(The flowmeter sensors illustrated above can be combined with one of the two transmitters described below)
FET325.....P.... / FET525.....P.... FET321 / FET521
in hazardous area, Div. 2 Outside the Ex area
USA No Ex approval!
NI: CL I, II / DIV2 / GP ABCDFG / T4
CL III / DIV1, 2 / T4
CL I, II,III ZN 2 AEx nA nC T4
DIP: CL II, III / DIV1 / GP EFG / T70°C
Canada
NI: CL I, II/ DIV 2/ GP ABCDFG/ T4
CL III/ DIV 1, 2/ T4
Ex nA nC T4
DIP: CL II, III / DIV1 / GP EFG / T70°C
DIP A21 TA 70°C
G01331
1) 2)
G01331
1) 2)
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