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Exciting Cable
Use an exciting cable specified in Table 4.3 and follow the procedure below referring to
Figure 4.7.
(1) Strip the cable sheath about 40 mm to expose black, white and red wires.
(2) Strip each end of wire about 5 mm to expose stranded copper wire and attach an
M4-size ring lug terminal on each end of wire. The lug terminal should have an insulating
sleeve and the lug terminal should be pressed firmly onto the end of each wire with a
compression tool.
Cable Connections
Connect the terminated signal cable and exciting cable to the terminal board in the
terminal housing through the cable connections. There are two cable connections: for signal
cable
and for exciting cable. See Figure 3.1
(1) Remove the four retaining screws of the terminal housing cover shown in Figure
3.1. Then open the cover. The terminal board is located inside the housing.
(2) Remove the cable connection from the terminal housing. Then put the terminated
signal
cable through the cable connection, slip ring and packing.
(3) Put the above signal cable through the hole on the terminal housing and connect
each ring lug of the cable to the terminal board pin A, B and G as shown in Figure 4.6.
Then tighten the screws securely with a phillips screwdriver. Loose connection may
result in unsatisfactory flowmeter performance. Check the wiring by pulling each
wire after the connection to make sure the three wires are securely connected..
(4) After the terminal board connection, pull the cable outward so that the cable is
wired straight from the terminal without unnecessary winding.
IMPORTANT
Do not pull the cable too hard. If the sheath-stripped part goes as far as where the packing is
located, air may leave through there and the airtight structure may not function.
Figure 4.7 Termination of exciting cable
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