<5. Wiring>
5-2
IM 01C25W05-01EN
5.3.3 Connecting the HART Configuration
Tool
Connect the HART configuration tool to the
and – terminals (use hooks) of the high
pressure side transmitter (master). Polarity does not
matter. A connection example is shown below.
High pressure side transmitter
(master)
Terminal section
F0503.ai
Power supply
–
+
PC/FieldMate
250 to 600Ω
Figure 5.3 Connecting the HART Configuration
Tool
5.3.4 Check Meter Connection
Connect the check meter to the CHECK A (+) and
SUPPLY – terminals (use hooks).
• A 4 to 20 mA DC output signal output from the
CHECK A (+) and SUPPLY – terminals.
IMPORTANT
• Use a check meter whose internal resistance
is 10 Ω or less.
High pressure side transmitter
(master)
Terminal section
F0504.ai
Power supply
–
+
Check meter
Figure 5.4 Check Meter Connection
5.4 Wiring
5.4.1 Loop Configuration
Since the DPharp uses a two-wire transmission
system, signal wiring is also used as power wiring.
DC power is required for the transmitter loop. The
transmitter and distributor are connected as shown
below.
For details of the power supply voltage and load
resistance, see section 5.7.
High pressure side
transmitter
(master)
Terminal section
F0505.ai
Hazardous
Location
Nonhazardous
Location
Distributor
(Power supply unit)
Receiver
Low pressure side
transmitter
(slave)
Terminal section
Figure 5.5
Connection between Transmitter and
Distributor
5.4.2 Wiring Installation
(1) General-use Type
With the cable wiring, use a metallic conduit or
waterproof glands.
• Apply a non-hardening sealant to the terminal
box connection port and to the threads on the
flexible metal conduit for waterproofing.
F0506.ai
Flexible metal conduit
Wiring metal
conduit
Apply a non-hardening
sealant to the threads for
waterproofing.
To low pressure side trasmitter
(slave)
High pressure side
transmitter
(master)
DRS cable
Tee
Drain plug
Figure 5.6
Typical Wiring Using Flexible Metal
Conduit
