KROHNE OPTISENS OAS 2000 EN - Manual (Page 26)

3
INSTALLATION
26
OPTISENS OAS 2000
www.krohne.com 07/2010 - MA OAS 2000 R02 en
Mounting the sensor (see previous figure)
• Make sure that the o-rings in the adapter between the sensor and the valve and on the sensor
below the sensor nut are in a faultless condition.
• Use silicon grease or soup to grease the o-rings before mounting the adapter.
• If the adapter is separated from the sensor, check and grease the o-ring inside the adapter.
Then push the adapter over the sensor head having the smaller thread towards the sensor
housing.
• Mount the lockring on the sensor head.
• Thread the adapter into the valve.
i The sensor is now fixed to the valve.
• When the adapter is tightened, open the valve.
• Push the sensor in place. If the process pressure is high, considerable force may be needed to
push the sensor in place.
• Screw the sensor nut in place, but do not tighten it yet.
• Align the sensor in parallel with the process flow.
• Tighten the sensor nut.
i The sensor is mounted.
CAUTION!
Be careful that the sensor is inserted straight. If the sensor is not straight, it can jam and so
cause damages on the transmitter or valve.
CAUTION!
If the transmitter is hard to mount and you suspect something that is stuck or the transmitter is
not mounted straight, crank out and check that everything is OK.
CAUTION!
The Sensor nut can release big forces. Do not ever loosen the nut without holding the sensor in
place at the same time.
.book Page 26 Friday, July 2, 2010 1:49 PM