Installing/mounting
4.1 Basic safety information
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 08/2014, A5E32221386-AC
23
Note
•
The process connection tag shall remain with the process pressure boundary assembly.
(The process pressure boundary assembly comprises the components that act as a
barrier against pressure loss from the process vessel: that is, the combination of process
connection body and emitter, but normally excluding the electrical enclosure). In the event
the device package is replaced, the process connection tag shall be transferred to the
replacement unit.
•
SITRANS LR250 units are hydrostatically tested, meeting or exceeding the requirement of
the ASME Boiler and Pressure Vessel Code and the European Pressure Equipment
Directive.
Note
•
The serial numbers stamped in each process connection body, (flange, threaded, or
sanitary), provide a unique identification number indicating date of manufacture.
Example: MMDDYY – XXX (where MM = month, DD = day, YY = year, and XXX=
sequential unit produced)
•
Further markings (space permitting) indicate flange configuration, size, pressure class,
material, and material heat code.
4.1.1.1
Pressure Equipment Directive, PED, 97/23/EC
Siemens Level Transmitters with flanged, threaded, or sanitary clamp type process mounts have
no pressure-bearing housing of their own and, therefore, do not come under the Pressure
Equipment Directive as pressure or safety accessories (see EU Commission Guideline 1/8 and
1/20).