Installation In Hazardous Area - Siemens SITRANS F Operating Instructions Manual

2.3

Installation in hazardous area

Equipment used in hazardous areas must be Ex-approved and marked accordingly. It is
required that the special conditions for safe use provided in the manual and in the Ex
certificate are followed!
Hazardous area approvals
The device is approved for use in hazardous area zone 1 and has the following approval:
● II 2 GD c
Designation in case of installed limiting value transmitter SJ 3.5-N:
● II 2G EEx ia IIC T6-T4
Designation in case of installed magneto electrical measuring transducers HART and
PROFIBUS:
● II 2G EEx ia IIC T6
Intrinsically safe data
In accordance with the tables contained in the EC Type Examination Certificate PTB 99
ATEX 2219 X, the inductive sensor SJ 3.5-N must be operated within the temperature class
T5 with an intrinsically safe circuit that does not exceed the maximum values of a Type 3
circuit.
Table 2- 1
Intrinsically safe
circuits
Ui
Ci
Li
Ii
Pi [mW]
SITRANS FVA250
Operating Instructions, 02/2013, A5E03821131-01
WARNING
WARNING
Make sure the hazardous area approval is suitable for the environment in which the
device will be installed.
Intrinsically safe circuits
Type 1
16 V
50 nF
250 μH
25 mA
34 mW
2.3 Installation in hazardous area
Type 2 Type 3
16 V 16 V
50 nF 50 nF
250 μH 250 μH
25 mA 52 mA
64 mW 169 mW
Safety notes
Type 4
16 V
50 nF
250 μH
76 mA
242 mW
11