Yokogawa EJA110A - Manual (Page 29)

IM 01C21B01-01E 5-4
5. INSTALLING IMPULSE PIPING
5.2 Impulse Piping Connection
Examples
Figure 5.2 shows examples of typical impulse piping
connections. Before connecting the transmitter to the
process, study the transmitter installation location, the
process piping layout, and the characteristics of the
process fluid (corrosiveness, toxicity, flammability,
etc.), in order to make appropriate changes and
additions to the connection configurations.
Note the following points when referring to these
piping examples.
• The high pressure connecting port on the transmit-
ter is shown on the right (as viewed from the front).
• The transmitter impulse piping connection is shown
for a vertical impulse piping connection configura-
tion in which the direction of connection is either
upwards or downwards.
• If the impulse piping is long, bracing or supports
should be provided to prevent vibration.
• The impulse piping material used must be compat-
ible with the process pressure, temperature, and
other conditions.
• A variety of process pressure tap valves (main
valves) are available according to the type of
connection (flanged, screwed, welded), construction
(globe, gate, or ball valve), temperature and
pressure. Select the type of valve most appropriate
for the application.
Tee
3-valve
manifold
Drain
valve
Orifice
Drain
plug
Tap
valve
Union
or flange
Liguid Gas
Condensate pot
Steam
F0505.EPS
Figure 5.2 Impulse Piping Connection Examples