Reference Manual
00809-0100-4690, Rev FC
June 2011
A-3
Rosemount 2088 and 2090
Ranges for Rosemount 2088
Ranges for Rosemount 2090F
Protocols 4–20 mA HART (Output Code S)
Output
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 seconds after power is
applied to the transmitter.
Load Limitations
Maximum loop resistance is determined by the power supply voltage, as
described by:
Range Minimum Span URL/Max.span/Sensor Limit
1 1.5 psi (103 mbar) 30 psi (2,1 bar)
2 7.5 psi (517 mbar) 150 psi (10,3 bar)
3 40 psi (2,76 bar) 800 psi (55,2 bar)
4 200 psi (13,8 bar) 4000 psi (275,8 bar)
Range Minimum Span URL/Max.span/Sensor Limit
1 1.5 psi (103 mbar) 30 psi (2,1 bar)
2 7.5 psi (517 mbar) 150 psi (10,3 bar)
3 40 psi (2,76 bar) 300 psi (20,7 bar)
Ranges for Rosemount 2090P
Range Minimum Span URL/Max.span/Sensor Limit
1 1.5 psi (103 mbar) 30 psi (2,1 bar)
2 7.5 psi (517 mbar) 150 psi (10,3 bar)
3 40 psi (2,76 bar) 300 psi (20,7 bar)
Load (ohms)
Operating
Region
Voltage (Vdc)
Max. Loop Resistance = 43.5 (Power Supply Voltage – 10.5)
1387
1000
500
0
10.5
20 30
42.4
The Field communicator requires a minimum loop
resistance of 250
for communication.
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