Hart 1-5 Vdc Low Power (Output Code M) - Emerson Rosemount 2051 Reference Manual

Reference Manual
00809-0100-4107, Rev BA
Local Operator Interface
The LOI utilizes a 2 menu display with internal and external configuration buttons. Internal
buttons are always configured for Local Operator Interface. External Buttons can be ordered
and configured as either LOI, (option code M4), Analog Zero and Span (option code D4) or
Digital Zero Trim (option code DZ). See
A.2.4

HART 1-5 Vdc 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.
2051
Digital communications based on HART Revision 5 protocol.
2051 with Selectable HART
The 2051 with Selectable HART comes with Selectable HART Revisions. Digital communications
based on HART Revision 5 (default) or Revision 7 (option code HR7) protocol can be selected.
The HART revision can be switched in the field using any HART based configuration tool or the
optional local operator interface (LOI).
Local Operator Interface
The LOI utilizes a 2 button menu with internal and external configuration buttons. Internal
buttons are always configured for Local Operator Interface. External Buttons can be configured
for either LOI, (option code M4), Analog Zero and Span (option code D4) or Digital Zero Trim
(option code DZ). See 2051 with Selectable HART product manual (00809-0100-4107) for LOI
configuration menu.
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 k or greater (meter input impedance)
Turn-On Time
Performance within specifications less than 2.0 seconds after power is applied to the
transmitter.
Appendix A: Specifications and Reference Data
Appendix A: Specifications and Reference Data
Section D: Local Operator Interface
April 2013
for menu.
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