Reference Manual
00809-0100-4021, Rev FB
August 2011
4-15
Rosemount 3144P
FOUNDATION Fieldbus
CHANNEL
Select the channel that corresponds to the desired sensor measurement .
L_TYPE
The L_TYPE parameter defines the relationship of the sensor measurement
(sensor temperature) to the desired output temperature of the AI Block. The
relationship can be direct or indirect.
Direct
Select direct when the desired output will be the same as the sensor
measurement (sensor temperature).
Indirect
Select indirect when the desired output is a calculated measurement
based on the sensor measurement (e.g. ohm or mV). The relationship
between the sensor measurement and the calculated measurement will be
linear.
XD_SCALE and OUT_SCALE
The XD_SCALE and OUT_SCALE each include four parameters: 0%, 100%,
engineering units, and precision (decimal point). Set these based on the
L_TYPE:
L_TYPE is Direct
When the desired output is the measured variable, set the XD_SCALE to
represent the operating range of the process. Set OUT_SCALE to match
XD_SCALE.
L_TYPE is Indirect
When an inferred measurement is made based on the sensor
measurement, set the XD_SCALE to represent the operating range that
the sensor will see in the process. Determine the inferred measurement
values that correspond to the XD_SCALE 0 and 100% points and set
these for the OUT_SCALE.
Channel Measurement
1 Input 1
2 Input 2
3 Differential
4 Terminal (Body) Temperature
5 Input 1 Minimum Value
6 Input 1 Maximum Value
7 Input 2 Minimum Values
8 Input 2 Maximum Values
9 Differential Minimum Value
10 Differential Maximum Value
11 Terminal (Body) Minimum Value
12 Terminal (Body) Maximum Value
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