Impulse Piping Connection Examples - YOKOGAWA DpharpEJX vigilantplant EJX110 User Manual

5.2 Impulse Piping Connection
Examples
Figure 5.5 and 5.6 show examples of typical impulse
piping connections. Before connecting the transmitter
to the process, study the transmitter installation
location, the process piping layout, and the characteris-
tics 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 line 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.
Liguid
Orifice
Tap
valve
Union
or flange
Tee
3-valve
manifold
Drain
valve Drain
Liquid Level - Open Tank
Open tank
Tap valve
Union or flange
Pipe
Tee
Drain valve
Drain plug
Figure 5.5 Impulse Piping Connection Examples for
Differential Pressure Transmitters
Liquid
Tap valve
Union or flange
Union or
flange
Tee
Union or flange
Tap valve
Drain valve
Drain plug
Figure 5.6 Impulse Piping Connection Examples for
Gauge/absolute Pressure Transmitters
5-4
5. INSTALLING IMPULSE PIPING
Gas Steam
Condensate pot
plug
Liquid Level - Closed Tank
Vent plug
Closed tank
3-valve
manifold
Gas Steam
Union or flange
Drain plug
Drain valve Tap valve
Tee
Tee
IM 01C25B01-01E
F0505.EPS
Drain valve
Drain plug
F0506.EPS