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Installing/mounting
4.2 Mounting
SITRANS LR200 with mA/HART
22
Operating Instructions, 05/2019, A5E32337676-AE
4.2.1.1
Nozzle design
●
For nozzles 100 mm (4") in length or shorter use the 100 mm (4") shield.
●
For nozzles 250 mm (10") in length or shorter use the 250 mm (10") shield.
The end of the shield section or end of the horn should protrude a minimum of 10 mm (0.4”)
to avoid false echoes being reflected from the nozzle.
①
Locking ring secured by three 2 mm Allen set-screws
②
Threaded connection
③
Shield
Location on a manhole cover
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A manhole cover is typically a covered nozzle with a diameter 610 mm (24”) or greater.
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For optimum signal conditions, locate the antenna off-center, typically 100 mm (4") from
the side.