Yokogawa EJX930A - Manual (Page 37)

<6. Installing Impulse Piping>
6-4
IM 01C25R01-01E
6.2 Impulse Piping Connection
Examples
Figure 6.5 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
transmitter is shown on the right (as viewed
from the front).
• The transmitter impulse piping connection is
shown for a vertical impulse piping connection
configuration in which the direction of
connection is either upwards or downwards.
• If the impulse line is long, bracing or supports
should be provided to prevent vibration.
• The impulse piping material used must
be compatible 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.
F0605.ai
Tee
3-valve
manifold
Drain
valve
Orifice
Drain
plug
Tap
valve
Union
or flange
Liguid Gas
Condensate pot
Steam
Figure 6.5 Impulse Piping Connection Example