Emerson Daniel 3410 Series Operation Manual page 64

Configurations
January 2019
Configuration
The flow-condition pressure and temperature are individually configurable (via the
EnablePressureInput and EnableTemperatureInput data points) to be:
• Disabled (0),
• Live (1) (4-20 mA input signal)
• Fixed (2)
If an input is live, then the values corresponding to the minimum and maximum input (4
and 20 mA, respectively) are specified via data points (MinInputPressure,
MaxInputPressure, MinInputTemperature, MaxInputTemperature).
If an input is fixed, then its value is specified via a data point (SpecFlowPressure,
SpecFlowTemperature).
Alarm limits can be specified for each input (LowPressureAlarm, HighPressureAlarm,
LowTemperatureAlarm, HighTemperatureAlarm). Additionally, the flow-condition
pressure is configurable to be gage or absolute (via the InputPressureUnit data point). If
the pressure is gage, then the atmospheric pressure must be specified (via the
AtmosphericPress data point). See
and Configure the pressure parameters for the meter
condition pressure and temperature.
Another data point (FlowPOrTSrcUponAlarm), common to both pressure and
temperature, is used to specify the data source to use when the selected input data is
invalid (i.e., value at or outside its alarm limits or a live input in calibration) as either:
• Last good value (0), or
• Fixed value (1).
This data point (FlowPOrTSrcUponAlarm) is configurable via the Daniel MeterLink Field
Setup Wizard > Temperature and Pressure page under Alarm Selection. It is also
configurable via the Daniel MeterLink Tools > Edit/Compare Configuration screen. The
default is to use the last good value.
Data updates
The Daniel 3410 Series Gas Ultrasonic Flow Meter samples the input analog signal(s) and
updates the corresponding data point(s) (LiveFlowPressure, LiveFlowTemperature) once
per second regardless of the input selection (disabled, live, or fixed).
Every five seconds, the meter updates the "in-use" flow-condition pressure and
temperature values (FlowPressure, AbsFlowPressure, FlowTemperature) depending
upon the input selection, validity of the input data, and the selected data source upon
alarm according to
64
Configure the temperature parameters for the meter
Table 5-7.
Operations manual
DAN-20057316
for details on configuring the flow-
Operations manual