
Flow monitoring
Immersion sensor without integrated processor
FCS-GL1/2TN-NAEX-H1141
Edition • 2016-06-25T23:48:01+02:00
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Hans Turck GmbH & Co.KG
ñ D-45472 Mülheim an der Ruhr
ñ Witzlebenstraße 7
ñ T
el. 0208 4952-0
ñ Fax 0208 4952-264
ñ [email protected] ñ www
.turck.com
Type code FCS-GL1/2TN-NAEX-H1141
Ident no. 6870443
Mounting conditions insertion style sensor
Water Operating Range 1…100cm/s
Oil Operating Range 3…200 cm/s
Stand-by time typ. 8 s (2…18 s)
Switch-on time typ. 2 s (1…13 s)
Switch-off time typ. 2 s (1…15 s)
Temperature jump, response time max. 12 s
Temperature gradient ð 250 K/min
Medium temperature -20…85 °C
Device designation É II 2 G EEx ib IIC T6
ignition protection category Ex ib IIC
PowerPið 0.69 W
Internal inductances/capacitances negligibly small
Ex approval acc. to conformity certificate TÜV 99 ATEX 1518
Protection class IP67
Housing material Metal, Titanium/Metal ceramics (3.7235)
Sensor material metal, Titanium/metal ceramic (3.7235)
Max. tightening torque housing nut 30 Nm
Connection Flange connector, M12 x 1
Pressure resistance 60 bar
Process connection G ½" long
■ATEX category II 2 G, Ex Zone 1
■Ex flow sensor for liquid media
■Calorimetric principle
■Adjustment via signal processor
■Status displayed via signal processor
■Sensor made of Titanium B3 with met-
al-ceramic coating
■Intrinsically safe EEx ib IIC T6, for use
in zone 1
■Plug-in device, M12 x 1
■4-wire connection to an Ex0 processor
Wiring Diagram
Functional principle
Our insertion - flow sensors operate on the
principle of thermodynamics. The measur-
ing probe is heated by several °C as against
the flow medium. When fluid moves along the
probe, the heat generated in the probe is dis-
sipated. The resulting temperature is mea-
sured and compared to the medium tempera-
ture. The flow status of every medium can be
derived from the evaluated temperature differ-
ence. Thus TURCK's wear-free flow sensors
reliably monitor the flow of gaseous and liquid
media.