Mounting Inner Diaphragm Type Seals; Mounting EjC80 And EjC81 With Remote Seal - YOKOGAWA DPharp EJXC80A User Manual

4.2.2 Mounting Inner Diaphragm Type
Seals
Install the seal in accordance with the Figure 4.3.
The bolts, nuts, mating flange and gasket are to be
procured by the customer.
Position the connection adapter so that the drain/
vent plugs are aligned straight up and down.
IMPORTANT
• Please use the gasket whose inside
diameter is greater than the inside pipe
diameter.
• Do not sharply bend or twist capillary tube or
apply excessive stress to them.
• For differential pressure transmitters,
capillary tubes must be bundled together
to avoid measuring error duets temperature
difference between the two diaphragm seals.
• The product is performing temperature
compensation by the temperature sensor in
the transmitter section. When a difference
of temperature appears between the
transmitter section and capillary tube, an
output error occurs.
Please use thermal insulants to decrease the
effect of temperature difference between the
transmitter section and capillary tube.
Connection flange
Mating flange
Procured by the customer
Gasket
Procured by the customer
Connection adapter
Flange connection type
Drain/vent plug
Mating flange
Procured by the customer
Gasket
Procured by the customer
Stud bolt/nut
Attached to product
Adapter connection type
Figure 4.3 Mounting Inner Diaphragm Seal
Drain/vent plug
Capillary tube
Diaphragm
Gasket
Connection adapter
Capillary tube
Diaphragm
Gasket
F0403.ai
<4. Installation>
4.3 Mounting EJC80 and
EJC81 with Remote Seal
■ The transmitter can be mounted on a nominal
50 mm (2 to inch) pipe using the mounting
bracket supplied, as shown in Figure 4.4.
The transmitter can be mounted on either a
horizontal or a vertical pipe.
■ When mounting the bracket on the transmitter,
tighten the (four) bolts that hold the transmitter
to a torque of approximately 39 N·m {4 kgf·m}.
Horizontal pipe mounting
U-bolt nut
Mounting bracket
50mm (2-inch) pipe
Vertical pipe mounting
U-bolt nut
Mounting bracket
U-bolt
Figure 4.4 Transmitter Mounting
IMPORTANT
When using the absolute pressure transmitter of
M-Capsule, please care so that the sum of the
head pressure and atmospheric pressure does
not exceed Upper Range Limit (130 kPa abs.)
4-3
Transmitter
mounting bolt
U-bolt
Transmitter
mounting bolt
50mm (2-inch) pipe
F0404.ai
IM 01C25W01-01EN