Manual

<5. Installation>
5-3
IM 01C25R01-01E
5.4 Swapping the High/Low-
pressure Side Connection
5.4.1 Rotating Pressure-detector Section
180°
This procedure can be applied only to a transmitter
with a vertical impulse piping type.
The procedure below can be used to turn the
pressure detector assembly 180°. Perform
this operation in a maintenance shop with the
necessary tools laid out and ready for use, and then
install the transmitter in the eld after making the
change.
1) Use an Allen wrench (JIS B4648, nominal 2.5
mm) to remove the two setscrews at the joint
between the pressure-detector section and
transmitter section.
2) Leaving the transmitter section in position,
rotate the pressure-detector section 180°.
3) Tighten the two setscrews to x the pressure-
detector section and transmitter section
together (at a torque of 1.5 N·m).
Reposition the process connector and drain
(vent) plugs to the opposite side as described in
subsection 4.3.
F0505.ai
Process connector
Setscrew
Before After rotating 180°
Figure 5.5 Before and After Modication
5.4.2 Using the Communicator
With a communicator, you can change which
process connection is used as the high-pressure
side without mechanically rotating the pressure-
detector section 180 as described in subsection
5.4.1. To change, call parameter ‘H/L swap’ for
HART Communication and select REVERSE (right
side: low pressure; left side: high pressure) or select
NORMAL to change back to normal (right side:
high pressure; left side: low pressure). For other
communication type except HART Communication
Type, refer to each communication manuals.
Output
Input
NORMAL
REVERSE
F0506.ai
Figure 5.6 Input/Output Relationship
IMPORTANT
Since the H/L label plate on the capsule
assembly will remain unchanged, use this
function only when you cannot switch the
impulse piping. If the ‘H/L SWAP’ parameter
setting is changed, the input/output relationship
is reversed as shown in gure 5.6; be sure this is
understood by all.