Ex Relevant Specifications; Hazardous Atmospheres; Atex Transmitter With 'Intrinsic Safety Ex Ia/Ib' Type Of Protection In Accordance With Directive 2014/34/Eu; Iecex Transmitter With The Following Types Of Protection: 'Intrinsic Safety Ia', 'Non Sparking Na' And 'Dust Ignition Protection By Enclosure Tb - ABB 261GS Operating Instruction

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.
Marking
Permissible ambient temperature range according to temperature
class:
Ambient temperature
-40 ... 85 °C (-40 ... 185 °F)
-40 ... 71 °C (-40 ... 159 °F)
-40 ... 56 °C (-40 ... 132 °F)
or
Marking
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
Effective internal capacitance
Effective internal inductance
36 IM/261Gx/Ax-EN Rev. 08 | 261Gx, 261Ax
PTB 05 ATEX 2032
II 1/2 G Ex ia IIC T4 bzw. T6 Ga/Gb
II 2 G Ex ib IIC T4 bzw. T6 Gb
Temperature class
T1 ... T4
T5
T6
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
U = 30 V
i
I = 130 mA
i
P = 0.8 W
i
C = 10 nF
i
L = 0.5 mH
i
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.
Marking
Maximum permissible ambient temperature range according to
temperature class
Ambient temperature Temperature class
-40 ... 85 °C
T4
(-40 ... 185 °F)
-40 ... 56 °C
T6
(-40 ... 133 °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 ±)
Effective internal capacitance
Effective internal inductance
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
IECEx ZLM 10.0002
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
Surface
temperature
95 °C (203 °F)
66 °C (151 °F)
U = 30 V
i
I = 130 mA
i
P = 0.8 W
i
C = 10 nF
i
L = 0.5 mH
i
I ≤ 22,5 mA
N
U ≤ 45 V
N