Yokogawa EJA530E - Manual (Page 22)

<4. Installation>
4-1
IM 01C25F01-01E
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 section 9.1 “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.
• For the EJ530 and EJX630A whose
capsule code is A, B or C, the pipe of the
atmospheric opening is located on the
pressure detecting section. The opening
must not face upward. See subsection 5.1.1.
• D capsule of EJ530 and EJX630A is
of sealed gauge reference and the change
in atomospheric pressure may affect the
measurement.
4.2 Mounting
■ The impulse piping connection port of the
transmitter is covered with a plastic cap to
protect against dust. This cap must be removed
before connecting the piping. (Be careful not
to damage the threads when removing these
caps. Do not insert a screw driver or other
tool between the cap and the port threads to
remove the cap.)
■ The transmitter can be mounted on a nominal
50 mm (2-inch) pipe using the mounting bracket
supplied, as shown in Figure 4.1.
■ The user should prepare the mating gasket for
the transmitters with Process connection code
8 and 9. See Figure 4.2.
Horizontal pipe mounting
Vertical pipe mounting
F0401.ai
50 mm (2-inch) pipe
U-bolt (L)
U-bolt (S)
Mounting bracket
U-bolt nut (S)
U-bolt nut (L)
U-bolt nut (L)
Mounting bracket
50 mm (2-inch) pipe
U-bolt (L)
U-bolt (S)
U-bolt nut (S)
Figure 4.1 Transmitter Mounting
Gasket
F0402.ai
Figure 4.2 Gasketing