Siemens Sitrans F Series Additional Operating Instructions

DEVICE DESCRIPTION 2
9
SITRANS FX330
www.siemens.com/flow09/2018 - A5E40861058-AB
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
amb
• Product temperature T
m
• Nominal size DN
• Heat resistance of the connecting cable
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
IIII
II Explosion protection, group II
2
22
2 Equipment category 2
G
GG
G Gas explosion protection
D
DD
D Dust ignition protection
Ex db
Ex dbEx db
Ex db Protection type "Flameproof enclosure"
Ex eb
Ex ebEx eb
Ex eb Protection type "Increased safety"
Ex tb
Ex tbEx tb
Ex tb Protection type "Equipment - dust ignition protection by enclosure"
Ex ia
Ex iaEx ia
Ex ia Protection type "Intrinsic safety", protection level "ia" (flow sensor, compact device)
Ex [ia]
Ex [ia]Ex [ia]
Ex [ia] Protection type "Intrinsic safety", protection level "ia" (flow sensor circuit, remote
version)
IIC
IICIIC
IIC Gas group, suitable for gas groups IIC, IIB and IIA
IIIC
IIICIIIC
IIIC Dust group, suitable for groups IIIC, IIIB and IIIA
T6...T2
T6...T2T6...T2
T6...T2 Temperature class range, suitable for temperature class T1...T6
T70
T70T70
T70°C
CC
C Maximum surface temperature of the signal converter housing without dust coating at
ambient temperature 65°C / 149°F and product temperature 65°C / 149°F
T70
T70T70
T70°C...T240
C...T240C...T240
C...T240°C
CC
C Maximum surface temperature of the flow sensor housing without dust coating at
ambient temperature 65°C / 149°F (is determined by the product temperature)
Gb
GbGb
Gb EPL, suitable for zone 1 and zone 2
Db
DbDb
Db EPL, suitable for zone 21 and zone 22

Siemens Sitrans F Series Specifications

General

Measurement Principle	Coriolis, Electromagnetic, Ultrasonic
Communication Protocols	HART, PROFIBUS, Foundation Fieldbus, Modbus
Pressure Range	Varies by model (e.g., up to 400 bar for some models)
Power Supply	24 V DC or 110-230 V AC
Protection Class	IP67, IP68
Housing Material	Stainless steel, aluminum
Liner Material	PTFE, PFA, rubber
Electrode Material	Stainless steel, Hastelloy, platinum