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Reference Manual
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
A-6
LCD Block
• Configures the local display.
2 Analog Input Blocks
• Processes the measurements for input into other function blocks. The
output value is in engineering units or custom and contains a status
indicating measurement quality.
PID Block
• Contains all logic to perform PID control in the field including cascade
and feedforward.
Backup Link Active Scheduler (LAS)
The transmitter can function as a Link Active Scheduler if the current link
master device fails or is removed from the segment.
1-5 Vdc HART Low Power (Output Code M)
Output
Three wire 1–5 Vdc output, user-selectable for linear or square root output.
Digital process variable superimposed on voltage signal, available to any
host conforming to the HART protocol.
Power Supply
External power supply required. Standard transmitter operates on 9 to 28
Vdc with no load.
Power Consumption
3.0 mA, 27–84 mW
Output Load
100 kΩ or greater
Turn-On Time
Performance within specifications less than 2.0 sections after power is
applied to the transmitter.
Overpressure Limits Transmitters withstand the following limits without damage:
2051C
• Ranges 2–5: 3626 psig (250 bar)
4500 psig (310,3 bar) for option code P9
• Range 1: 2000 psig (137,9 bar)
2051T
• Range 1: 750 psi (51,7 bar)
• Range 2: 1500 psi (103,4 bar)
• Range 3: 1600 psi (110,3 bar)
• Range 4: 6000 psi (413,7 bar)
• Range 5: 15000 psi (1034,2 bar)