Rosemount 248 - Page 75

Reference Manual
00809-0100-4825, Rev BB
August 2005
Rosemount 248
www.rosemount.com
Index
Numerics
375 Field Communicator . . . . . . . . 3-3
Check Output
. . . . . . . . . . . 3-5
Configuration . . . . . . . . . . . 3-5
Diagnostics and Service . . . . 3-9
Fast Key Sequence . . . . . . . 3-4
HART Menu Tree . . . . . . . . 3-3
Information Variables . . . . . . 3-8
Review Configuration Data . . 3-5
A
AMS . . . . . . . . . . . . . . . . . . . . . 3-2
Apply Changes . . . . . . . . . . 3-2
C
Calibration . . . . . . . . . . . . . . . . . 4-2
Trim the Transmitter . . . . . . 4-2
Commissioning . . . . . . . . . . . . . 3-2
Set the Loop to Manual . . . . 3-2
Configuration . . . . . . . . . . 3-5, A-16
2-Wire RTD Offset . . . . . . . . 3-7
50/60 Hz Filter . . . . . . . . . . 3-6
Check Output . . . . . . . . . . . 3-5
Process Variables . . . . . 3-5
Diagnostics and Service . . . . 3-9
Active Calibrator . . . . . 3-10
Alarm and Saturation . . 3-11
HART Output . . . . . . . 3-10
Intermittent Threshold .3-12
Loop Test . . . . . . . . . . . 3-9
Master Reset . . . . . . . . 3-9
Open Sensor Holdoff . . 3-13
PV Range Values . . . . 3-11
Sensor Detect . . . . . . . 3-12
Sensor Review . . . . . . 3-10
Test Device . . . . . . . . . 3-9
Write Protect . . . . . . . 3-10
Information Variables . . . . . . 3-8
Date . . . . . . . . . . . . . . 3-8
Descriptor . . . . . . . . . . 3-8
Message . . . . . . . . . . . 3-8
Sensor Serial Number . . 3-8
Tag . . . . . . . . . . . . . . . 3-8
PV Damping . . . . . . . . . . . . 3-6
Review Configuration Data . 3-5
Review . . . . . . . . . . . . 3-5
Select Sensor Type . . . . . . . 3-5
Set Output Units . . . . . . . . . 3-6
Terminal Temperature . . . . . 3-6
Variable Mapping . . . . . . . . 3-5
Considerations . . . . . . . . . . . . . 1-3
Commissioning . . . . . . . . . . 1-3
Electrical . . . . . . . . . . . . . . 1-3
Environmental . . . . . . . . . . 1-3
Temperature Effects . . . 1-3
General . . . . . . . . . . . . . . . 1-3
Mechanical . . . . . . . . . . . . . 1-3
Location . . . . . . . . . . . 1-3
Special Mounting . . . . . 1-3
D
Diagnostic Messages . . . . . . . . . 4-5
Hardware . . . . . . . . . . . . . . 4-5
Diagnostics . . . . . . . . . . . . . . . . 3-9
Dimensional Drawings . . . . . . . . A-8
Drawings
Dimensional . . . . . . . . . . . . A-8
Installation . . . . . . . . . . . . . B-3
Wiring . . . . . . . . . . . . . . . 2-10
F
Failure Mode Switch . . . . . . . . . 2-8
G
Ground the Transmitter . . . . . . 2-12
Grounded
Thermocouple Inputs
. 2-14
Ungrounded
mV Inputs
. . . . . . . . . 2-12
RTD/Ohm Inputs . . . . 2-12
Thermocouple Inputs . 2-12
H
Hardware . . . . . . . . . . . . . . . . . 4-4
Maintenance . . . . . . . . . . . 4-4
Sensor Checkout . . . . . 4-4
HART Fast Key Sequence . . . . . 3-4
HART Menu Tree . . . . . . . . . . . 3-3
Hazardous Certifications . . . . . . B-1
Hazardous Locations Certifications
Australian Approvals . . . . . . B-3
Brazilian Approval . . . . . . . B-3
Combination Approvals . . . . B-3
European Approvals . . . . . . B-2
Japanese Approvals . . . . . . B-3
North American Approvals . . B-1
I
Installation
Asia Pacific . . . . . . . . . . . . .2-4
European . . . . . . . . . . . . . .2-4
Flowchart . . . . . . . . . . . . . .2-2
Head Mount
DIN Plate Style Sensor
. .2-4
Threaded Sensor . . . . . .2-5
Multichannel . . . . . . . . . . . .2-6
North American . . . . . . . . . .2-5
Rail mount transmitters . . . . .2-7
Integral mount sensor . .2-6
Threaded sensor . . . . . .2-7
South American . . . . . . . . . .2-5
Installation Drawings . . . . . . . . . B-3
M
Mounting . . . . . . . . . . . . . . . . . .2-3
To a DIN Rail . . . . . . . . . . . .2-3
Multichannel Installation . . . . . . .2-6
Multidrop Communication . . . . .3-14
O
Options . . . . . . . . . . . . . . . . . A-17
Ordering Information . . . . . . . . A-10
Accessories and Spare Parts
List
. . . . . . . . . . . . . . . . . A-16
Overview . . . . . . . . . . . . . . . . . .1-2
Manual . . . . . . . . . . . . . . . .1-2
Transmitter . . . . . . . . . . . . .1-2
P
Power Supply . . . . . . . . . . . . . . 2-11
Grounding . . . . . . . . . . . . .2-12
Surges . . . . . . . . . . . . . . .2-12
Transients . . . . . . . . . . . . .2-12