Endress+Hauser Micropilot M FMR250 Austauschanleitung Seite 8

Exchange of antenna assembly for Micropilot M FMR250
Exchange of antenna assembly for Micropilot M FMR250
E N
D R
M IC E S
O rd
S +
e r R O
S e C o P IL H A
d e :
r. -N U S
O T
o .: E R
II
M e
s s b
M e
e re
a s u
ic h
ri n g
ra n
g e
U 1 m a
6 .. .3 x . 2
4 .. .2
6 V 0 m
0 m
D C
A
IP
6 5
T
A > 7 0
°C
:
t > 8
5 °C
Set screw
1
4
Marking
for alignment
Thread
UNI flange
boss
5
Alignment
0 2 1
2
Grounding spring
Antenna cable
2
Stop screw
3
Marking for alignment:
• Threaded boss /UNI flange:
see fig. above
• ANSI, DIN or JIS flange:
Marking on the flange
• Top target positioner:
Marking on the housing adapter
°
9 0
opposite the air purge connection,
see beside.
Any repair of a certified instrument must be documented!
This includes stating the serial number of the instrument, date of repair, type of repair and repair technician.
Disassembly of antenna assembly:
1
Loosen set screw at housing approximately one turn
(Allen wrench AF4 mm).
2
Unscrew stop screw in housing approximately 4 - 5 turns
(Allen wrench AF2.5 mm).
3 Twist housing of process connection.
4
The process connection with antenna cable and microwave
incoupling is one unit and can not be taken apart.
5
Remove the antenna horn or parabolic reflector from the
antenna by unscrewing the 4 screws M4 (AF7 mm).
Exchange of antenna assembly and assembly of device:
The device is assembled in reverse order:
• Mount antenna horn or parabolic reflector with 4 hexagon
screws to the antenna assembly, torque 3 Nm.
Attention:
For parabolic antennas the antenna assemly is matched to
the size of parabolic reflector.
It is not allowed to change the size of parabolic reflector.
• Lubricate O-ring at antenna assembly with some silicone
grease before mounting the housing.
• Twist housing onto antenna assembly.
• Align grounding spring such that electrical contact is
established with the process connection
(ground potential to antenna).
• Screw in stop screw until stop, then loosen ½ to 1 turns.
• Install electronics and all modules, see page 1.
• Install completely assembled device on tank and align such,
that the marking for alignment points towards the
tank wall.
For versions with top target positioner:
Please observe detailed information for use and alignment
of the top in the operating manual, chapter "Mounting".
• Turn the housing on the process connection in order to
simplify the access to display and terminal compartment.
Then tighten set screw firmly.
After the exchange of antenna assembly a new calibration of
the Micropilot M FMR250 is required. The necessary steps
are described in supplement "basic calibration".
EA0014F/00/a2/10.09
Endress+Hauser Maulburg