WIKA BNA - Handbuch (Seite 9)

GB
WIKA operating instructions bypass level indicator model BNA 9
112195.01 11/2012 GB/D
3. Installation and commissioning
Fig. 1: Bypass level indicator, model BNA
T = upper projection
M = centre to centre distance
U = lower projection
■ Slowly open the shut-off
valve at the upper process
connection
■ Slowly open the shut-off
valve at the lower process
connection. As liquid flows
into the bypass vessel,
the float floats to the top.
The magnetic system
turns the magnetic rollers
of the optical indicator
from „light“ to „dark“.
The current filling level
is shown after liquid
equalisation between the
vessel and the bypass
level indicator
■ Always heed the
mounting and
operating instructions
of attachment devices
before putting them into
operation