Emerson Rosemount 2051 Reference Manual page 97

Reference Manual
00809-0100-4101
Two-wire 4–20 mA, user-selectable for linear or square root output. Digital process variable
superimposed on 4–20 mA signal, available to any host that conforms to the HART
protocol.
Power Supply
External power supply required. Standard transmitter operates on 10.5 to 42.4 Vdc with no
load.
Turn-On Time
Performance within specifications less than 2.0 sections after power is applied to the
transmitter.
Load Limitations
Maximum loop resistance is determined by the voltage level of the external power supply,
as described by:
Maximum Loop Resistance = 43.5 * (Power Supply Voltage – 10.5)
The HART communicator requires a minimum loop resistance of 250Ω for
communication.
Foundation
Power Supply
External power supply required; transmitters operate on 9.0 to 32.0 V dc transmitter
terminal voltage.
Current Draw
17.5 mA for all configurations (including LCD display option)
Turn-On Time
Performance within specifications less than 20.0 sections after power is applied to the
transmitter.
Table A-1: Foundation fieldbus Function Block Execution Times
Block
Resource
Reference Manual
1387
1000
500
Operating
region
0
10.5
20
Voltage (Vdc)
Communication requires a minimum
loop resistance of 250 ohms.
fieldbus (Output Code F)
™
30
42.4
Execution Time
-
Reference Data
March 2024
®
97