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SATRON VG
1.1.1 Installing welded process couplings
Mounting hole for coupling
• Make a
45.5 mm (+0.5/-0.2 mm) hole in the tank wall
Ø
or pipe, as shown in Figure 1-3.
Welding the coupling
These instructions apply to all welded couplings; welding
the G1 standard coupling is described here as an
example.
• Place the coupling in the mounting hole as shown in Fig.
1-4. Then weld with several runs so as to prevent the
coupling's oval distortion and tightness problems.
• The transmitter must be out of the coupling while the
coupling is welded.You can use the shut-off plug shown in
Fig. 1-5 to shut the coupling. The plug protects the
coupling's sealing face and permits the starting of the
process without the transmitter.
• It is always recommendable to use the welding assistant
(M1050450) while welding the coupling to prevent any
distortions due to heat.
• Do not make weld grounding via any transmitter's body!
1.1.2 Mounting the transmitter on the coupling
Procedure
• Make sure that the coupling's sealing face is clean.
• Remove the orange protective plug from the transmitter's
diaphragm.
Do not touch the diaphragm! Figure 1-6.
• Insert the transmitter
in a straight line
coupling (Fig. 1-7), so that the guide groove on the
transmitter aligns with the stop pin on the coupling. The
transmitter settles into position when the groove and pin
are aligned, and will be prevented from rotating in the
coupling.
When inserting the transmitter, be careful not to
damage the edge of the sensor diaphragm on the
edges of the coupling or on the end of the stop pin!
• Lock the transmitter in position by screwing the hex nut
fully home. Finger tightness is sufficient to tighten the
sealing faces. However, we recommend final tightening
with a tool to eliminate the effect of vibration and other
such factors. Apply 60±20 Nm torque.
Do not use sealing tape etc. on threaded
connection!
Figure 1-6
pressure transmitter
into the
DO NOT TOUCH!
Figure 1-3 Coupling mounting hole
Welding Sequence
3
5
2
Figure 1-4 Welding the coupling
1 Shut-off plug, AISI316 (Order No. M550405)
2 Shut-off screw G1
3 G1 welded process coupling
Figure 1-5 Coupling shut-off plug
10044004
3
1
6
4
Welding assistant M1050420
79
1
2
3
Figure 1-7
BPLV700AV
2006-12-19
10044110
1050354043
HEX 36
10044108
10044006
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