YOKOGAWA DPharp EJA530E - Page 42

<4. Installing Impulse Piping>
41
IM 01C25A01-01E
4.1.2 Routing the Impulse Piping
(1) Process Pressure Tap Angles
NOTE
[Gas]
Pressure
taps
Process
piping
[Steam][Liquid]
45°
45°
45° 45°
45°
45°
F0405.ai
Figure 4.5 Process Pressure Tap Angle
(For Horizontal Piping)
(2) Position of Process Pressure Taps and
Transmitter
pressure taps.
process pressure taps.
(3) Impulse Piping Slope
(4) Temperature Difference Between Impulse
Piping (for differential pressure
transmitters)
(5) Condensate Pots for Steam Flow
Measurement (for differential pressure
transmitters)
(6) Preventing Wind Speed Effects in Very Low
Differential Pressure Measurement
(for differential pressure transmitters)
IMPORTANT
(7) Preventing Freezing
NOTE
piping.