Yokogawa EJX430B - Manual (Page 20)

<4. Installation>
4-1
IM 01C27B01-01EN
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, information for connecting to the 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.
• For the EJX430B, the atmospheric opening
is located on the low pressure side cover
flange. Take care do not enter rain into the
opening. The opening must not face upward.
See section 11.4, “Dimensions,” for the
location of the opening.
4.2 Mounting
■ The transmitter is shipped with the process
connection, according to the ordering
specifications. To change the orientation of the
process connections, refer to section 4.3.
■ With differential pressure transmitters,
the distance between the impulse piping
connection ports is usually 54 mm (figure 4.1).
By changing the orientation of the process
connector, the dimension can be changed to
51 mm or 57 mm.
■ The transmitter can be mounted on a nominal
50 mm (2-inch) pipe using the mounting bracket
supplied, as shown in figure 4.2 and 4.3.
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
with a torque of approximately 39 N·m {4kgf·m}.
57 mm 54 mm 51 mm
F0401.ai
Figure 4.1 Process Connector Impulse Piping
Connection Distances for Differential
Pressure Transmitters
CAUTION
When the suffix code of the mounting bracket
is “B,” make sure to put the spacer between the
bracket and transmitter as shown in Figure 4.2.