Micro Motion RFT9709 Manual de instrucciones Pagina 166

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152
Using ProLink
®
Software with Micro Motion
®
Transmitters
Calibrate Menu
continued
Milliamp output trim
Figure 14-13.Connecting a reference device to a transmitter
Note for Figure 14-13.
Do not use these diagrams to wire the transmitter, PC Interface adaptor, DCS or
PLC. For transmitter wiring, see the transmitter instruction manual. To wire the
PC Interface adaptor, see Chapter 2.
Performing milliamp
output trim
To trim a milliamp output:
1. Open the Calibrate menu, then choose Milliamp Output Trim. When
connected to an RFT9739, the ProLink menu bar displays a
cascading menu, allowing the user to choose the primary output
(milliamp output 1) or secondary output (milliamp output 2) for
trimming.
For HART protocol only, when the output produces either a 0-20
mA or a 4-20 mA current, the dialog box indicates the output will
be set at 4 mA, as shown in
Figure 14-14
.
For Modbus protocol, regardless of output current, the ProLink
program will indicate the output will be set at 4 mA for the
milliamp trim, as shown in
Figure 14-14
.
Micro Motion
Transmitter
PC Interface
Adaptor
DCS or PLC
with internal
resisitor
Connecting to a Bell 202 multidrop network
Reference
device
Reference
device
Micro Motion
Transmitter
PC Interface
Adaptor
Connecting to an individual Bell 202 transmitter
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