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Rosemount Model 3095FT HART Flow Transmitter
2-14
ELECTRICAL
CONSIDERATION
The signal terminals are located in a compartment of the electronics
housing separate from the transmitter electronics. Figure 2-9
illustrates power supply load limitations for the transmitter.
Power Supply
The dc power supply should provide power with less than 2% ripple.
The total resistance load is the sum of the resistance of the signal leads
and the load resistance of the controller, indicator, and related pieces.
Note that the resistance of intrinsic safety barriers, if used, must be
included.
NOTE
A minimum loop resistance of 250 ohms is required to communicate
with a personal computer. With 250 ohms of loop resistance, the
transmitter requires a minimum of 11.0 volts.
If a single power supply is used to power more than one Model 3095FT
transmitter, the power supply used, and circuitry common to the
transmitters, should not have more than 20 ohms of impedance at
1200 Hz.
If the Remote Power Supply enclosure is installed, a 250 ohm resistor is
factory installed — do not add additional loop resistance.
Maximum loop resistance is determined by the voltage of the external power supply, as
described by
:
Communication requires a minimum loop resistance of 250 ohms.
1964
250
0
7.5
11.0
Power Supply Voltage
35
Lo
ad
(Oh
m
s)
Operating Region
Max. Loop Resistance
Power Supply Voltage
7.5
–
0.014
-------------------------------------------------------------------
≤
Содержание 3095FT
Страница 1: ...R Model 3095FT HART Flow Transmitter 00809 0100 4015 English Rev B1...
Страница 2: ......
Страница 4: ......
Страница 45: ...3 13 Options and Accessories 3051 1006D03A FIGURE 3 5 Recharging the Battery 15 to 36 V dc 500 mA minimum...
Страница 98: ...Rosemount Model 3095FT HART Flow Transmitter 4 50...
Страница 117: ...5 19 Troubleshooting and Maintenance FIGURE 5 2 Replacing the Remote Power Supply Battery...
Страница 118: ...Rosemount Model 3095FT HART Flow Transmitter 5 20...
Страница 146: ...Rosemount Model 3095FT HART Flow Transmitter 7 24...
Страница 147: ...Appendix A 1 A Model 3095 Explosion Proof Installation Drawing Factory Mutual Drawing Number 03095 1025 Rev G...
Страница 148: ...Rosemount Model 3095FT HART Flow Transmitter A 2...
Страница 149: ...A 3 Appendix A...
Страница 150: ...Rosemount Model 3095FT HART Flow Transmitter A 4...
Страница 151: ...Appendix B 1 B Index of I S F M for 3095 and Index of I S F M for 03095 5000 Drawing Numbers 03095 1020 and 03095 5000...
Страница 152: ...Rosemount Model 3095FT HART Flow Transmitter B 2...
Страница 153: ...B 3 Appendix B...
Страница 154: ...Rosemount Model 3095FT HART Flow Transmitter B 4...
Страница 155: ...B 5 Appendix B...
Страница 156: ...Rosemount Model 3095FT HART Flow Transmitter B 6...
Страница 157: ...B 7 Appendix B...
Страница 158: ...Rosemount Model 3095FT HART Flow Transmitter B 8...
Страница 159: ...Appendix C 1 C Model 3095 Explosion Proof Installation Drawing CSA Drawing Number 03095 1024 Rev D...
Страница 160: ...Rosemount Model 3095FT HART Flow Transmitter C 2...
Страница 161: ...C 3 Appendix C...
Страница 162: ...Rosemount Model 3095FT HART Flow Transmitter C 4...
Страница 163: ...Appendix D 1 D Index of I S CSA for 3095 and Index of I S CDA for 03095 5000 Drawing Numbers 03095 1021 and 03095 1031...
Страница 164: ...Rosemount Model 3095FT HART Flow Transmitter D 2...
Страница 165: ...D 3 Appendix D...
Страница 166: ...Rosemount Model 3095FT HART Flow Transmitter D 4...
Страница 167: ...D 5 Appendix D...
Страница 168: ...Rosemount Model 3095FT HART Flow Transmitter D 6...
Страница 183: ......