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Reference Manual
00809-0200-4801, Rev BA
April 2007
3-9
Rosemount 3051S
CHANNEL
Select the channel that corresponds to the desired sensor measurement. The
3051S measures both pressure (channel 1) and sensor temperature (channel
2).
NOTE
Channel 3 and channels 12-19 are only available when the Advanced
Diagnostic Block is licensed. Channels 5-9 are only available when the Mass
Flow Block is licensed.
L_TYPE
The L_TYPE parameter defines the relationship of the sensor measurement
(pressure or sensor temperature) to the desired output of the AI Block (e.g.
pressure, level, flow, etc.). The relationship can be direct, indirect, or indirect
square root.
Direct
Select direct when the desired output will be the same as the sensor
measurement (pressure or sensor temperature).
Indirect
Select indirect when the desired output is a calculated measurement
based on the sensor measurement (e.g. a pressure measurement is made
to determine level in a tank). The relationship between the sensor
measurement and the calculated measurement will be linear.
Indirect Square Root
Select indirect square root when the desired output is an inferred
measurement based on the sensor measurement and the relationship
between the sensor measurement and the inferred measurement is
square root (e.g. flow).
Table 3-1. I/O Channel Definitions
Channel Number Channel Description
1 differential pressure in AI.XD_SCALE units
2 sensor temperature in AI.XD_SCALE units
3 differential pressure in inH
2
0 @68°F (ADB)
4 mean differential pressure
5 absolute pressure (AO.OUT)
6 process temperature (AO.OUT)
7 mass flow
8 absolute pressure (AO.CAS_IN shadow)
9 process temperature (AO.CAS_IN shadow)
10 differential pressure in inH
2
0 @68°F (MFTB)
11 All MAI channels (12-19 below)
12 SPM1 mean (ADB)
13 SPM1 standard deviation (ADB)
14 SPM2 mean (ADB)
15 SPM2 standard deviation (ADB)
16 SPM3 mean (ADB)
17 SPM3 standard deviation (ADB)
18 SPM4 mean (ADB)
19 SPM4 standard deviation (ADB)