Yokogawa EJX210B - Manual (Page 19)

<4. Installation>
4-1
IM 01C27C01-01EN
4. Installation
4.1 Precautions
Before installing the transmitter, read the cautionary
notes in Section 2.4, “Selecting the Installation
Location.” For additional information on the
ambient conditions allowed at the installation
location, refer to Subsection 11.1 “Standard
Specifications.”
NOTE
To connect this transmitter to the field wireless
network, the information on connecting to field
wireless devices needs to be set beforehand.
Refer to 7.4 “Connecting to the Field Wireless
Network.”
IMPORTANT
• When welding piping during construction,
take care not to allow welding currents to
flow through the transmitter.
• Do not step on this instrument after
installation.
• Never loosen the four bolts securing the
cover flanges (Refer to figure 3.1.) If the seal
liquid leaks, the transmitter cannot be used.
4.2 Mounting
The transmitter is mounted on a process using its
high-pressure side flange as shown in Figure 4.1.
The mating flange, gasket, stud bolts and nuts are
to be procured by the customer.
Gasket
Stud bolt
Nut
F0401.ai
Figure 4.1 Transmitter Mounting
IMPORTANT
Please use a gasket with an inside diameter
(ød) that is greater than the diameter of the
diaphragm seal. If a gasket with a smaller
inside diameter is used, the diaphragm may
not function correctly. (Refer to Subsection 11.4
‘Dimensions’)
4.3 Rotating Transmitter Section
WARNING
Intrinsic safe type transmitters must be, as a rule,
do not rotate transmitter section if it is powered.
In case you need to rotate when the transmitter
is powered, using gas detector and confirm no
existence of explosive gas before rotating.
The transmitter section can be rotated in either
direction to any desired position. Note that there is
a stopper which prevents the transmitter from being
rotated more than 360°.
1) Using the Allen wrench, remove the five
setscrews securing the transmitter section to
the capsule assembly.
2) Rotate the transmitter section slowly to the
desired position.
3) Tighten the five setscrews to a torque of 1.5
N·m {15 kgf·cm}.