KROHNE OPTIBAR P 3050 C EN - Manual (Page 17)

INSTALLATION
3
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OPTIBAR P 3050 C
www.krohne.com 03/2012 - 4001953401 - MA OPTIBAR P3050C R02 en
Procedure
• Ensure that the signal converter has been de-energised!
• Remove the housing cover from the signal converter by hand.
If the housing cover is stuck and cannot be moved by hand, use a suitable square material to
carefully remove it. Place this tool in the flaring located in the housing cover. Take care not to
damage the optionally available window cover! Use a lever action to now carefully apply
greater torque to loosen it. As soon as the housing cover opens, put the tool away and turn the
cover by hand until it opens.
• Ensure that no moisture gets into the device while it is open (drops, spray, liquid mist, etc. …).
• If there is a display, it can be removed by pulling it forward gently. Pay attention to the
connecting cable between the device and the display. To completely remove the display, the
connecting cable must be carefully pulled out of the connector on the board.
i The connection board is now available for further work.
• To install the display and close the housing, follow the steps in reverse order.
Note that the housing covers for devices with displays and devices without displays are
different heights. Never attempt, even on a temporary basis, to install a housing cover for a
blind device on a device with an installed display.
3.6 Ventilating the pressure sensor
In the case of gauge pressure transmitters, mechanical reasons make it necessary to charge the
reference side of the pressure sensor with atmospheric pressure. Ventilation occurs in versions
in IP65 via a special aerator fitted with a Gore-Tex
® filter. Ensure that the ventilation opening is
not covered or closed (e.g. covering over with paint not permitted).
For the IP 67 version, a vented cable fitted with a capillary tube must be used. In the process,
ensure that the capillary tubes are vented in a dry room protected from moisture and that no
dust or moisture can penetrate the capillary tube opening.
INFORMATION!
Each time a housing cover is opened, the thread should be cleaned and greased. Use only resin-
free and acid-free grease.
Ensure that the housing gasket is properly fitted, clean and undamaged.
.book Page 17 Thursday, March 8, 2012 9:29 AM