
4
Wiring
4.1
Wiring overview
Wiring diagrams for specific sensors can be found in the wiring sections of manuals of
those particular sensors.
4.2
Power supply/current loop
4.2.1
Power supply overview
The tables below display the minimum and maximum voltages needed to operate the
5081.
Minimum supply voltage at the transmitter terminals
12.0 Vdc
Minimum power supply for load resister
250 Ohms
Maximum power supply voltage
42.0 Vdc
Maximum power supply voltage for intrinsically safe instal-
lations
30.0 Vdc
Graph
Table 4-1:
Upper line
Power supply voltage needed to provide 12 Vdc at the
transmitter terminals for a 22 mA current
Lower line
Power supply voltage needed to provide 30 Vdc for a 22
mA current
Maximum current
About 24 mA
Minimum load for digital communications
250 Ohms
Minimum power supply voltage to supply the 12.0 Vdc lift
off voltage at the transmitter
17.5 Vdc
Wiring
Instruction Manual
15
Summary of Contents for Rosemount5081
Page 4: ......
Page 10: ...Contents vi Rosemount 5081 ...
Page 12: ...Startup procedure 2 Rosemount 5081 ...
Page 23: ...Mounting 5081 on a pipe Figure 3 2 Installation Instruction Manual 13 ...
Page 24: ...Installation 14 Rosemount 5081 ...
Page 28: ...Wiring 18 Rosemount 5081 ...
Page 50: ...Programming basics 40 Rosemount 5081 ...
Page 130: ...Diagnostics and troubleshooting 120 Rosemount 5081 ...
Page 136: ...Digital communications 126 Rosemount 5081 ...
Page 140: ...Engineering drawings 130 Rosemount 5081 ...
Page 141: ...Engineering drawings Instruction Manual 131 ...
Page 142: ...Engineering drawings 132 Rosemount 5081 ...
Page 143: ...Engineering drawings Instruction Manual 133 ...
Page 144: ...Engineering drawings 134 Rosemount 5081 ...
Page 145: ...Engineering drawings Instruction Manual 135 ...
Page 146: ...Engineering drawings 136 Rosemount 5081 ...
Page 151: ...EU Declarations of Conformity 138 Rosemount 5081 ...