Emerson Rosemount 3410 Series Installation Manual page 72

Configuration
October 2023
7. Select Next to continue to Meter Digital Outputs.
8. Select the Meter Digital Output parameters for Digital output 1A, Digital output
9. Select Next to continue to Analog Outputs.
10. Configure Analog Outputs.
11. Select Next to continue to the HART
12. Configure HART Output parameters, which include four Dynamic process variables
13. The Meter Corrections page is used to define parameters for pressure and
14. Set the temperature and pressure scaling for analog inputs, enter fixed values, and
15. Click Next to continue to the Gas Chromatograph Setup page.
16. Select the settings below to configure USM device as a Modbus Master to poll a gas
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Configure Frequency output 1 and Frequency output 2 content, flow direction,
Channel B phase, maximum frequency output (Hertz) and full scale volumetric flow
rate.
1B, Digital output 2A and Digital output 2B based on Frequency validity or flow
direction.
If the output of the ultrasonic meter is reversed from what a flow computer is
expecting, select Inverted Operation. This changes the digital output from a HIGH
for a TRUE condition to output a LOW for a TRUE condition.
Analog outputs can be based on Uncorrected volume flow rate, Corrected volume
flow rate, Average flow velocity, Average speed of sound, Energy flow rate or Mass
flow rate. The flow direction (Forward, Reverse or Absolute) and Full scale volumetric
flow rate used with output (20mA maximum) are also configurable.
Alarm action parameters determines the state the output will drive during an alarm
condition (High 20 mA, Low - 4 mA, Hold last value, Very low - 3.5, Very high 20.5 mA
or None).
(Primary, Secondary, Third and Fourth variable. The Primary variable is set to match
the Content set for Analog output 1. If a second analog output is available, the
Secondary variable is set to match the Content set for Analog output 2) Identification
and HART units (volume units, flow rate time units, velocity units, pressure and
temperature units).
a) Select Next to continue to the Meter Corrections page.
temperature expansion correction of the meter internal diameter if enabled. Click
Next to continue to the Temperature and Pressure page.
set alarm limits for both. The alarm limit selections are hold last output value or use
fixed value.
• Live temperature selections include minimum and maximum inputs or fixed
temperature.
• Live pressure selections include minimum and maximum inputs, gauge
(atmospheric pressure), absolute, or fixed pressure.
chromatograph.
• Port: Select which serial port will be connected to the GC. While the port is
configured for communications to a GC, it will not act as a Modbus slave device
for communications from MeterLink
chromatograph using Modbus TCP/IP. Choose Port as Ethernet.
• GC protocol: Select the protocol for which the GC is configured. The Rosemount
Gas Ultrasonic meter uses 7 data bits, Even parity, and 1 stop bit for ASCII
Modbus and 8 data bits, No parity, and 1 stop bit for RTU Modbus. This option
will be enabled only when a serial port is selected.
Output(s) parameters.
®
or a SCADA system. USM can also poll a gas
™
Gas Ultrasonic Flow Meters
Installation manual
00825-0600-3104