YOKOGAWA DpharpEJX vigilantplant EJX210A, Руководство пользователя

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IM 01C25C01-01E 4-3
4. INSTALLATION
4.5.2 Mounting to Process Flange
Tighten the bolts to completely close the gap between
the ring and the pressure detector section.
The mating flange, gasket, stud bolts and nuts are to be
procured by the customer.
F0405.EPS
Ring
Diaphragm
Pressure-detector
section Gasket
Mating flange
Spiral gasket
Figure 4.5 Mounting to Process Flange
IMPORTANT
• Confirm that there is no gap between the ring
and the process-detector section after they
are mounted on the process flange. A gap can
lead to a sudden, explosive release of process
fluids.
• When mounting or removing the ring, take
care not to tilt the pressure detector downward
as the ring can slip off and cause injury.
• When re-mounting the ring, use the new spiral
gasket as shown in below table.
Table 4.1 Spiral Gasket for Pressure Detector Section
Side*
T0401.EPS
Part number
F9350SV
F9970XF
F9350ST
F9970XD
F9346ZH
F9970XB
Size
∅
100
∅
120 t4.5
∅
100
∅
120 t4.5
∅
70
∅
90 t4.5
∅
70
∅
90 t4.5
∅
60
∅
75 t4.5
∅
60
∅
75 t4.5
Description
For 3-inch flange
For 3-inch flange**
For 2-inch flange
For 2-inch flange**
For 1 1/2-inch flange
For 1 1/2-inch flange**
*: Material; 316SST (Hoop), PTFE Teflon (Filler)
**: For oil-prohibited use (Option code: /K1, /K2, /K5, /K6)
4.6 Affixing the Teflon Film
The FEP Teflon option includes a teflon film and
fluorinated oil. Before mounting the transmitter to the
process flange, affix the teflon film as follows:
IMPORTANT
1) Position the diaphragm so that the diaphragm
is in a upward position.
2) Pour the fluorinated oil on the diaphragm and
gasket area covering it completely and evenly.
Be careful not to scratch the diaphragm or
change the its shape.
3) Affix the teflon film over the diaphragm and
gasket area.
4) Next, carefully inspect the cover and try to
identify any entrapped air between the dia-
phragm and the teflon film. The air must be
removed to ensure optimum performance. If
air pockets are present, use your fingers to
remove the air by starting at the center of the
diaphragm and work your way out.
5) Position the gasket on the Teflon film.
6) Mount the transmitter onto the process flange.
Teflon film
Diaphragm
Fluorinated oil
[PART No. : F9145YN]
Gasket area
PART No.
F9347XA
F9347YD
Prosess Flange size
3 inch (80mm)
2 inch (50mm)
F0406.EPS
Figure 4.6 Affixing the Teflon Film