36 IM/261Gx/Ax-EN Rev. 08 |
261Gx, 261Ax
8
Ex relevant specifications
8.1
Hazardous atmospheres
8.1.1
ATEX transmitter with ‘intrinsic safety Ex ia/ib’ type
of protection in accordance with Directive
2014/34/EU
Transmitter with 4 ... 20 mA output signal and HART communication
Certificate no.
PTB 05 ATEX 2032
Marking
II 1/2 G Ex ia IIC T4 bzw. T6 Ga/Gb
II 2 G Ex ib IIC T4 bzw. T6 Gb
Permissible ambient temperature range according to temperature
class:
Ambient temperature
Temperature class
-40 … 85 °C (-40 … 185 °F)
T1 … T4
-40 … 71 °C (-40 … 159 °F)
T5
-40 … 56 °C (-40 … 132 °F)
T6
or
Marking
II 1/2 D Ex ia IIIC T66°C bzw.
T95°C Da/Db
II 2 D Ex ib IIIC T66°C bzw. T95°C
Db
Permissible ambient temperature range:
-40 … 85 °C (-40 … 185 °F)
Supply and signal circuit with ‘Intrinsically safe Ex ia/ib IIB/IIC type
of protection’, with the following maximum values
U
i
= 30 V
I
i
= 130 mA
P
i
= 0.8 W
Effective internal capacitance
C
i
= 10 nF
Effective internal inductance
L
i
= 0.5 mH
8.1.2
IECEx transmitter with the following types of
protection: ‘Intrinsic Safety ia’, ‘non sparking nA’
and ‘dust ignition protection by enclosure tb’
Transmitter with 4 ... 20 mA output signal and HART communication
Certificate no.
IECEx ZLM 10.0002
Marking
Ex ia IIC T6 bzw. T4 Ga/Gb
Ex ia IIIC T66°C bzw. T95°C Da/Db
Ex nA IIC T6 bzw. T4 Gc
Ex tb IIIC T66°C bzw. T95°C Db
Maximum permissible ambient temperature range according to
temperature class
Ambient temperature
Temperature class
Surface
temperature
-40 … 85 °C
(-40 … 185 °F)
T4
95 °C (203 °F)
-40 … 56 °C
(-40 … 133 °F)
T6
66 °C (151 °F)
Electrical data according to designation Ex ia IIC T6 or T4
Ga/Gb and Ex ia IIIC T66°C or T95°C IP6X Da/Db
Power supply and signal circuit with ‘intrinsic safety’ Ex ia or Ex ib
type of protection, for connection to power supply units with the
following maximum values (terminal signal ±)
U
i
= 30 V
I
i
= 130 mA
P
i
= 0.8 W
Effective internal capacitance
C
i
= 10 nF
Effective internal inductance
L
i
= 0.5 mH
If the transmitter is being integrated into a partition between
equipment protection level Ga or Da and a lower protection
level, the transmitter must be supplied with power by an Ex ia
intrinsically safe circuit.
Electrical data according to designation Ex nA IIC T6 or T4 Gc
and Ex tb IIIC T66°C or T95°C IP6X Db
I
N
≤ 22,5 mA
U
N
≤ 45 V
