Endress+Hauser Deltabar S PMD70 Austauschanleitung Seite 9

Exchange of sensor unit on Deltabar S PMD70
Assembly of sensor with aluminum housing F14/F15
0 2 1
guide
mounting link
on retaining ring
2 1
0
Endress+Hauser
Ex i-devices: The repair has to be performed such, that the voltage isolation of the Ex ia circuits against ground is maintained.
If required, a test can be performed with 500 Veff over a time period of 60 s.
Ex d-devices: Attention has to be paid not to damage the threads.
In other case the part has to be exchanged.
O- ing r
1
45 69 x 2 62 . . EPDM
2
new retaining ring
3
set screw
4
sensor
Any repair of a certified device has to be documented!
This includes stating the device serial number, date of repair, type of repair and name of the repair technician.
Assembl of housing with sensor unit y
1
Exchange O-ring at sensor head
(new O-ring is already mounted on spare sensor)
2
Before mounting insert the retaining ring at the sensor head.
After the mounting the retaining ring limits the alignment
of the housing on the sensor.
3
Place housing on sensor head and screw it on the sensor to
the edge of the retaining ring (about 5 turns).
4
Align retaining ring with the set screw.
5
Screw housing together with retaining ring such that the
mounting link will be positioned in the guide at the housing.
Screw housing on the sensor unit until stop.
After appropriate assembly the housing can be turned for more
than a complete turn (380°) until the retaining ring stops the
rotation.
Commissioning
• Insert electronics module, connect sensor with electronic
module
• Re-install instrument, connect cables at terminal
• Adjust housing to desired position
Important:
After the alignment of the housing tighten the set screw firmly
to achieve an optimal potential equalization between process
vessel and ground of the housing.
Especially the electromagnetic compatibility of the electronics
will be improved.
5
totally 9 turns
set screw,
(for mounting loosen at half)
groove in housing
Screw together until minimum
to retaining ring . . .
. . . screw the housing together with
the retaining ring further on
KA603P/00/a2/12.06
set screw
guide
retaining ring is positioned
in the lower groove of the housing
by screwing the housing together
with the sensor
view of housing from below
3