Types Of Protection; Ambient Temperature / Temperature Classes - Siemens SITRANS FX330 Ex-i Additional Operating Instructions

DEVICE DESCRIPTION
2

2.5 Types of protection

The marking is:
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
2 2 2 2
G G G G
Ex ia Ex ia Ex ia Ex ia
IIC IIC
IIC IIC
T6...T2 T6...T2
T6...T2 T6...T2
T6 T6 T6 T6
Gb Gb
Gb Gb
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 2 G Ex ia IIC T6...T2 Gb II 2 G Ex ia IIC T6...T2 Gb
II 2 G Ex ia IIC T6...T2 Gb II 2 G Ex ia IIC T6...T2 Gb
(compact version, flow sensor in remote version)
or
II 2 G Ex ia IIC T6 Gb II 2 G Ex ia IIC T6 Gb II 2 G Ex ia IIC T6 Gb II 2 G Ex ia IIC T6 Gb
(signal converter in remote version)
Ex ia IIC T6...T2 Gb Ex ia IIC T6...T2 Gb Ex ia IIC T6...T2 Gb Ex ia IIC T6...T2 Gb
(compact version, flow sensor in remote version)
or
Ex ia IIC T6 Gb Ex ia IIC T6 Gb
Ex ia IIC T6 Gb Ex ia IIC T6 Gb
(signal converter in remote version)
Explosion protection, group II
Equipment category 2
Gas explosion protection
Intrinsically safe, level of protection "ia"
Gas group, suitable for gas groups IIC, IIB and IIA
Temperature class range
(compact version, flow sensor in remote version)
Temperature class
(signal converter in remote version)
EPL, suitable for zone 1
amb
m
www.siemens.com/flow
SITRANS FX330
09/2018 - A5E39673922-AB