Endress+Hauser FTL51C Bedienungsanleitung Seite 15

Liquiphant M
Safety instructions:
Zone 0
Endress+Hauser
The dependency of the ambient and process temperatures upon the temperature class:
Type
FTL51C (PFA or ECTFE coating)
FTL51C (PFA or ECTFE- coating)
FTL51C (ECTFE coating)
FTL51C (PFA coating)
FTL51C (PFA coating)
T
a
*
T
p
Fig. 4
* Additional temperature range for sensors with temperature spacer or pressure-tight bushing
• In the event of potentially explosive vapor/air mixtures, only operate the device under atmospheric
conditions.
– Temperature: -20 to +60 °C
– Pressure: 80 to 110 kPA (0.8 to 1.1 bar)
– Air with normal oxygen content, usually 21 % (V/V)
• If no potentially explosive mixtures are present, or if additional protective measures have been taken,
according to EN 1127-1, the transmitters may be operated under other atmospheric conditions in
accordance with the manufacturer's specifications.
• Only install the devices in media for which the wetted materials have sufficient durability (e.g. process
connection seal).
KEMA 00 ATEX 1071 X / XA00158F-D
Temperature Process temperature
class (sensor), Tp (process)
T6 –50 °C... +85 °C
T5 –50 °C...+100 °C
T4 –50 °C...+120 °C
T4 –50 °C...+135 °C
T3 –50 °C...+150 °C
T
a
70 °C
60 °C
T
a
50 °C
0 °C
0 °C
–50 °C
–50 °C
Ambient temperature
(electronics), Ta (ambient)
–50 °C...+60 °C
–50 °C...+70 °C
with temperature spacer
without temperature spacer
see graph below
*
50 °C 100 °C 150 °C
90 °C 120 °C
T
p
XA158xx04
15