Yokogawa EJX930A - Manual (Page 30)

<5. Installation>
5-1
IM 01C25R01-01E
5. Installation
5.1 Precautions
Before installing the transmitter, read the cautionary
notes in section 3.4, “Selecting the Installation
Location.” For additional information on the
ambient conditions allowed at the installation
location, refer to subsection 10.1 “Standard
Specifications.”
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.
5.2 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 5.3.
■ With differential pressure transmitters,
the distance between the impulse piping
connection ports is usually 54 mm (figure 5.1).
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 5.2 and 5.3.
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
F0501.ai
Figure 5.1 Process Connector Impulse Piping
Connection Distances for multivariable
Transmitters
F0502.ai
Horizontal pipe mounting
Vertical pipe mounting
Transmitter
mounting bolt
U-bolt nut
Mounting bracket
U-bolt nut
Mounting bracket
50 mm(2-inch) pipe
50 mm(2-inch) pipe
U-bolt
U-bolt
Transmitter
mounting bolt
Figure 5.2 Transmitter Mounting (Horizontal
Impulse Piping Type)