Proper conduit installationFigure 5-2:
C
B
D
A A
A. Conduit line
5.3
Wire the flowmeter
Use the following steps to wire the flowmeter:
1. Remove the housing cover on the side marked FIELD TERMINALS.
2. Connect the positive lead to the “+” terminal and the negative lead to the
“−” terminal as shown in Figure 5-3 for HART installations.
3. For HART installations utilizing the pulse output, connect the positive
lead to the “+” terminal of the pulse output and the negative lead to the
“−” terminal of the pulse output as shown in Figure 5-4. A separate 5 to 30
Vdc power supply is required for the pulse output. Maximum switching
current for the pulse output is 120 mA.
CAUTION!
Do not connect the powered signal wiring to the test terminals. Power
could damage the test diode in the test connection. Twisted pairs are
required to minimize noise pick up in the 4–20 mA signal and digital
communication signal. For high EMI/RFI environments, shielded signal
wire is required and preferred in all other installations. Use 24 AWG or
larger wire and do not exceed 5,000 feet (1,500 meters). For ambient
temperatures above 140 °F (60 °C) use wire rated to 176 °F (80 °C) or
higher.
Figure 5-3 and Figure 5-4 show wiring connections necessary to power a
transmitter and enable communications with a hand-held Field
Communicator.
Quick Start Guide
April 2018
14 Rosemount 8600 Series Vortex Flowmeter
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