1
2
F
ig
.
5
:
T
emperature ranges
1
P
rocess temperature
2
A
mbient temperature
I
nstruments in the version
"
O
il and grease free for oxygen
"
should be
unpacked just before mounting
.
A
fter the protective cover of the
process
fi
tting has been removed
,
the label
"
O
₂
"
on the process
fi
tting
is visible
.
D
anger
:
A
void oil
,
grease or contamination
.
E
xplosion danger
!
4
.
2
M
ounting steps
F
or mounting
VEGABAR
51
,
a welded socket is required
.
Y
ou can
fi
nd
these components in the supplementary instructions manual
"
W
elded
socket and seals
"
.
S
eal the thread with te
fl
on
,
hemp or a similar resistant seal material on
the process
fi
tting thread
1
½
NPT
.
à
S
crew
VEGABAR
51
into the welded socket
.
T
ighten the hexagon
on the process
fi
tting with a suitable wrench
.
W
rench size
,
see
chapter
"
D
imensions
"
.
W
arning
:
T
he housing must not be used to screw the instrument in
!
A
pplying
tightening force can damage internal parts of the housing
.
O
xygen applications
W
elding the socket
S
ealing
/
S
crewing in
threaded versions
VEGABAR
51
•
F
oundation
F
ieldbus
15
4
M
ounting
36715
-
EN
-
110629
