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PSS EVE0105 E-(en) SRD991 9
Electrical classification
1) 2)
see Certificates of Conformity EX EVE0105 A
Type of protection “Intrinsically Safe”
TypeAI638.............II2GEExiaIIB/IIC,
II 2 G EEx ib IIB/IIC
Temperature classes
Version with HART communication and "without communication":
T4 with explosion protection code EA4
Version with communications HART, FOUNDATION Fieldbus and
PROFIBUS-PA:
T4 / T6 with explosion protection code EAA
Certificate of Conformity ....PTB 00 ATEX 2128
For use in hazardous areas in circuits certified as intrinsically
safe with the following maximum values:
Input circuit: U max = 30 V, I max = 130 mA, P max = 0.9 W
Li = negligible, Ci = 1.3 nF (5.3 nF to earth)
Ambient temperature ranges:
TemperatureclassT4: ....–40°Cto+80°C
TemperatureclassT6: ....–40°Cto+55°C
Explosion protection Zone 2
Installation of the SRD991 in potentially explosive
atmospheres for Zone 2 (explosion protection EEx nA / nL)
The Intelligent Positioner SRD991, type AI 638 in protection
level intrinsic safety "ia" (II 2 G EEx ib/ia IIB/IIC T6/T4 Gb)
can be operated in potentially hazardous areas of Zone 2
(EEx nA / nL Gc) also on a normal (not intrinsically safe)
power supply, of which the voltage output is not higher than
the maximum value for explosion protection intrinsic safety
(according to EN 50014 / EN 50020) described in the
EC-Type-Examination Certificate PTB 00 ATEX 2128.
The non intrinsic safe circuit has additionally to fulfill the
requirements of EN 61010-1 (IEC 1010-1), protection grade
III, overvoltage category I.
See our Manufacturer’s Declaration on our website.
Explosion protection Zone 20
Certificate of Conformity .........IBExU08 ATEX 1148
EX II 1D Ex iaD 20 T 100°C. ......–40°C