Protection Types; Ambient Temperature / Temperature Classes - Siemens SITRANS F Additional Operating Instructions

DEVICE DESCRIPTION
2

2.5 Protection types

The vortex flowmeter is designed in the protection type "non-incendive" in accordance with
EN/IEC 60079-15:2010. Explosion protection is ensured in that there are no contacts or hot
surfaces with a sparking effect during operation.
The marking for the non-incendive version of compact devices is acc. to
ATEX:
IECEx:
The marking for the non-incendive version of remote versions is acc. to
ATEX:
IECEx:
The marking contains the following information: The marking contains the following information: The marking contains the following information: The marking contains the following information:
II II II II
3 3 3 3
G G G G
Ex nA Ex nA Ex nA Ex nA
Ex ic Ex ic Ex ic Ex ic
Ex [ic] Ex [ic]
Ex [ic] Ex [ic]
IIC IIC
IIC IIC
T6...T2 T6...T2 T6...T2 T6...T2
Gc Gc Gc Gc
INFORMATION!
In principle, operation is possible in all ranges of the temperature classes T1...T6.

2.6 Ambient temperature / temperature classes

Because of the influence of the temperature of the product, no fixed temperature class is
assigned to vortex flowmeters. The temperature class of these devices is rather a function of the
product temperature and ambient temperature that is present and the specific device version.
The classification is outlined in the following tables.
The tables take into account the following parameters:
• Ambient temperature T
• Product temperature T
• Nominal size DN
• Heat resistance of the connecting cable
8
II 3 G II 3 G
II 3 G II 3 G
Ex nA ic IIC T6...T2 Gc Ex nA ic IIC T6...T2 Gc Ex nA ic IIC T6...T2 Gc Ex nA ic IIC T6...T2 Gc
II 3 G II 3 G II 3 G II 3 G
II 3 G II 3 G II 3 G II 3 G
Ex nA [ic] IIC T6 Gc (signal converter) Ex nA [ic] IIC T6 Gc
Ex nA [ic] IIC T6 Gc Ex nA [ic] IIC T6 Gc
Ex ic IIC T6...T2 Gc (flow sensor) Ex ic IIC T6...T2 Gc Ex ic IIC T6...T2 Gc Ex ic IIC T6...T2 Gc
Explosion protection, group II
Equipment category 3
Gas explosion protection
Protection type "non-incendive equipment"
Protection type "Intrinsic safety", protection level "ic" (flow sensor circuit, compact device)
Protection type "Intrinsic safety", protection level "ic" (flow sensor circuit, remote version)
Gas group, suitable for gas groups IIC, IIB and IIA
Temperature class range
EPL, suitable for zone 2
amb
m
Ex nA ic IIC T6...T2 Gc Ex nA ic IIC T6...T2 Gc Ex nA ic IIC T6...T2 Gc Ex nA ic IIC T6...T2 Gc
Ex nA [ic] IIC T6 Gc (signal converter) Ex nA [ic] IIC T6 Gc Ex nA [ic] IIC T6 Gc Ex nA [ic] IIC T6 Gc
Ex ic IIC T6...T2 Gc (flow sensor) Ex ic IIC T6...T2 Gc Ex ic IIC T6...T2 Gc Ex ic IIC T6...T2 Gc
www.siemens.com/flow
SITRANS FX330
08/2017 - A5E42667474-AA EN