UMSITRPDS3-1
Model 275 Universal Hart Communicator
November 2010
2-3
+
_
- +
4-20 mA
Current Sense
Resistor 250 to
1100; See Note 3
Controller,
Recorder, or
Other 1-5 Vdc
Device; See
Note 2
Hazardous
Location
Non-Hazardous
Location
See Note 4
See
Note 1
+
_
Range Resistor
250, typical
I
O
I
O
I
O
I
O
I
O
Transmitter
Terminals
See
Note 1
Circuit
Junction
MG
00359a
Notes:
1 HART Communicator Connections:
Non-hazardous location – Connect as shown above.
Hazardous location – Refer to Communicator nameplate and the manual supplied with the
Communicator for certifications and approvals before connecting.
The HART Communicator is a non-polar device.
2 The System Power Supply may be part of the host input device or a separate device.
3 Network resistance equals the sum of the barrier resistances and the current sense resistor.
Minimum value is 250
Ω
; maximum value is 1100
Ω
.
4 Supply and return barriers are shown. Interconnect all cable shields and ground only at the barriers.
FIGURE 2-2 HART Communicator Connections to a Transmitter Loop
Summary of Contents for 7MF4033 series
Page 48: ...Model 275 Universal Hart Communicator UMSITRPDS3 1 November 2010 2 26 ...
Page 86: ...Installation UMSITRPDS3 1 November 2010 4 34 ...
Page 152: ...Calibration and Maintenance UMSITRPSD3 1 November 2010 7 20 ...
Page 158: ...Circuit Description UMSITRPDS3 1 November 2010 8 6 ...
Page 197: ......
Page 198: ......
Page 200: ...Model Designations and Specifications UMSITRPDS3 1 November 2010 9 42 ...
Page 204: ...Glossary UMSITRPDS3 1 November 2010 10 4 ...
Page 208: ...Appendix A Online Configuration Map UMSITRPDS3 1 11 4 November 2010 ...
Page 216: ...Appendix C Elevation and Suppression Correction UMSITRPDS3 1 13 4 November 2010 ...