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WIKA operating instructions bypass level indicator model BNA

112195.01 11/2012 GB/D

3. Installation and commissioning

The bypass level indicator is mounted in a vertical position on the vessel

to be monitored using the process connections (1) provided. Seals

(2), screws (3), washers (4) and nuts (5) suitable for the process

connection must be used. Choose a seal with a suitable corrosion

resistance. If necessary, shut-o valves must be mounted between the

vessel and the bypass.

Please heed the usual torque values of screws used in

pipetting work. The bypass level indicator must be installed

without tension. Suitable seals must be used. Care must

be taken that the seal material is resistant to the medium

and its vapours as well as to the temperature and pressure

loads to be expected.

Installing the oat

■

Clean the oat of anything stuck on it in the area of the oat magnet

system

■

Remove the base ange (7) and insert the oat (6) into the tube

from the bottom (the marking "top" or a legible model code marks the

top side of the oat)

■

Place the seal (9) onto the base ange. Replace the base ange

and x it in place using the screws (8)

Commissioning

If the bypass level indicator is tted with shut-o valves between

process connections and tank, proceed as follows.

■

Close draining and bleeding ttings on the bypass level indicator

with Plexiglass attachments, the oat must be moved up and down

inside the tube. For magnetic roller displays with ushing connections,

these connections must have an airtight seal. Please refer in this case

to the mounting and operating instructions for WIKA magnetic roller

displays with ushing connections as well.

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Wika BNA Manuale Utente Pagina 8