SICK 8013344, Addendum To Operating Instructions

Page: 17 / 88

For your safety
FLOWSIC100 Flare · Addendum to Operating Instructions · 8025365/V1-0/2020-05 · © SICK Engineering GmbH 17
2.8
Restrictions on use
The sender/receiver units are intended for installation in gas-carrying pipelines. It is not
absolutely necessary that atmospheric conditions prevail within the pipeline. The pipe wall
is then a zone-separating wall, i.e. no Ex zone is defined within the pipeline, at least
temporarily ( → Table 2 , Case 1).
WARNING: Hazard through pressure/temperature
▸
Use the FLSE100-XT sender/receiver units only within the pressure and
temperature limits as specified in these Operating Instructions and on the
device type plate.
▸
The selected materials must be resistant to the process gases. It is the
responsibility of the plant operator to ensure this.
WARNING: Dangerous voltage
● The rated voltage U
M
may not exceed 125 V in the safe area for use of the
sender/receiver units F1F-S, F1F-M and F1F-P for Zone 1. Higher voltages
can jeopardize intrinsic safety of the ultrasonic transducer circuit when
errors occur.
▸
Ensure the rated voltage U
M
used in the safe area does not exceed
125 V.
● The FLSE100-XT sender/receiver units are not equipped with a main power
switch for switching off the operating voltage.
▸
Plan and install a suitable switching off device.
WARNING: Leakage hazard
Operation with leakage is not permitted.
● The metallic and hermetically sealed, fully welded enclosure and the seal
must comply with all safety requirements which must also be fulfilled by the
pipeline itself with respect to design pressure and temperature and
compatibility of the material with the medium.
● The ultrasonic transducers with their gas-tight and pressure-proof
enclosures must be installed in the pipeline gas-tight and pressure-tight.
The FLSE100-XT is fitted with standardized sealing flanges for this purpose.
● The sealing itself must consist of material which is compatible with the
medium and is suitable for the application conditions.
▸
Check the sealing surfaces and elements for intactness before installa -
tion.
▸
Check the sealing effect with suitable methods after installation.
▸
Leak tightness is to be checked regularly during operation and the seal
replaced, as required.
● Before every re-installation new seals have to be used in the required
design.