Flow-condition pressure and temperature data source (continued)Table 5-7:
Input Type
(EnablePressureInput
or EnableTempera-
tureinput)
Data Validity
(PressureValidity or
TemperatureValidi-
ty)
Data Source Upon
Alarm
(FloePOrtSrcUpo-
nAlarm)
"In-Use" Data Source
(FlowPressure or Flow-
Temperature)
Fixed data point (Spec-
FlowPressure or Spec-
FlowTemperature)
*Live input can be invalid due to (a) one or more live values is/are at or outside the alarm limits, or
(b) the input is being calibrated.
The flow-condition absolute flow pressure is calculated as shown in Equation 5-6.
Flow-condition absolute pressure Equation 5-6:
,
=
+
ℎ
Pr =
,
=
Pr =
where
Equation 5-6
P
abs,f
flow-condition absolute pressure (MPaa) (AbsFlowPressure)
P
f
flow-condition pressure (MPa if InputPressureUnit=FALSE, MPaa if
InputPressureUnit=TRUE) (FlowPressure)
P
Atmosphere
(specified) atmospheric pressure (MPaa) (AtmosphericPress)
5.9.2 Configure the temperature parameters for the meter
• Live temperature - if Live Analog was selected for Temperature for meter corrections
on the Daniel MeterLink Startup Page, enter the scaling for the transmitter
connected to the analog input. Minimum input is the zero scale temperature of the
transmitter (i.e. 1 Volt or 4mA). Maximum input is the full scale temperature of the
transmitter (i.e. 5 Volts or 20 mA).
• Fixed temperature - If Fixed was selected on the Daniel MeterLink Startup Page for
Temperature It will also be enabled if a live temperature input was selected. Enter a
fixed value to use for calculations if the live input goes into alarm. Enter an average
temperature of the process fluid.
• Temperature alarm - Enter the low and high alarm limits. A temperature reading
outside of these limits causes a Temperature Validity alarm. The Alarm selection
determines what value to use while a live input is in alarm. This value is common
with the pressure Alarm selection so when one is changed, the other will change to
match.
Configurations
Operations manual 65
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