Installation; Precautions; Mounting - YOKOGAWA Dpharp vigilantplant EJA110A User Manual

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 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.

4.2 Mounting

The distance between the impulse piping connection
ports is usually 54 mm (Figure 4.2.1). By changing
the orientation of the process connector, the
dimension can be changed 51 mm or 57 mm.
The transmitter is shipped with the process connec-
tion, according to the ordering specifications. To
change the orientation of the process connections,
refer to Section 4.3.
The transmitter can be mounted on a nominal 50
mm (2-inch) pipe using the mounting bracket
supplied, as shown in Figure 4.2.2 and 4.2.3. 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
Figure 4.2.1 Process Connector Impulse Piping Connec-
tion Distances
54 mm 51 mm
F0401.EPS
Vertical pipe mounting
U-bolt nut
Mounting bracket
Horizontal pipe mounting
U-bolt nut
Mounting bracket
Figure 4.2.2 Transmitter Mounting (Horizontal Impulse
Piping Type)
4-1
4 . INSTALLATION
Transmitter
mounting bolt
U-bolt
50 mm(2-inch) pipe
Transmitter
mounting bolt
U-bolt
50 mm(2-inch) pipe
IM 01C21B01-01E
F0402.EPS