Installing/mounting
4.2 Mounting location
SITRANS LR250 (PROFIBUS PA)
Operating Instructions, 01/2014, A5E32221386-AB
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4.2.1
Nozzle design
Threaded PVDF antenna
Stainless steel horn antenna Flanged encapsulated antenna
①
Minimum clearance: 10 mm (0.4")
②
Minimum diameter: 50 mm (2")
③
Maximum nozzle length: 500 mm (20")
●
The end of the antenna must protrude a minimum of 10 mm (0.4") to avoid false echoes
being reflected from the nozzle
1)
.
●
Minimum recommended nozzle diameter for the threaded PVDF antenna is 50 mm (2").
●
An antenna extension (100 mm/3.93") is available for any version except the Threaded PVDF
and Flanged encapsulated antenna (FEA).
●
The maximum nozzle length for the FEA is 500 mm (20").
1)
Not applicable for FEA
4.2.2
Nozzle location
●
Avoid central locations on tall, narrow vessels
●
Nozzle must be vertical
Preferred
Undesirable