Yokogawa EJX438B - Manual (Page 22)

<4. Installation>
4-4
IM 01C27H01-01EN
P
h
0
(+)
(–)
F0405.ai
Low pressure side
High
pressure
side
Figure 4.5 Example of Installation to Tank for
Differential Pressure Transmitter
(Caution on Installation)
F0406.ai
P
h
0
(+)
(–)
Figure 4.6 Example of Installation to Tank for
Gauge Pressure Transmitter
(Caution on Installation)
4.4 Mounting the Flushing
Connection Ring
4.4.1 Mounting to Pressure Detector
Section
The flushing connection ring is mounted to the
pressure detector section as shown in Figure 4.7.
At the factory shipment, the flushing connection
ring is already assembled and attached to process
detector section.
Ring holder
Spiral gasket
F0407.ai
View from pressure detector section
Groove for installing
spiral gasket
Pressure-detector section
Drain/vent plug
Ring
Figure 4.7 Mounting to Pressure Detector Section
(1) Mount the ring holder on the ring and loosely
tighten the mounting screws.
(2) Place the spiral gasket in the ring groove. With
the ring correctly aligned and flush with the face
of the pressure detector, securely tighten each
ring holder’s mounting screws.
(3) Position the ring so that the drain/vent plugs are
aligned straight up and down.
4.4.2 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 procured by the customer.