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Reference Manual
00809-0100-4021, Rev JA
HART Commissioning
April 2017
HART Commissioning
3.9.2
Alarm and saturation
Field Communicator
The Alarm/Saturation command allows the user to view the alarm settings (Hi or Low). This command
can change the alarm and saturation values. To change the alarm and saturation values, select the value
to be changed, either
1 Low Alarm
,
2 High Alarm
,
3 Low Sat
,
4 High Sat,
or
5 Preset Alarms
and enter the
desired new value which must fall within the guidelines below:
The low alarm value must be between 3.50 and 3.75 mA
The high alarm value must be between 21.0 and 23.0 mA
The low saturation level must be between the low alarm value plus 0.1 mA and 3.9 mA for the standard
HART transmitter. For the safety certified transmitter, the lowest saturation setting is 3.7 mA and the
highest is 20.9 mA.
Example: The low alarm value has been set to 3.7 mA. Therefore, the low saturation level, S, must be as
follows: 3.8
≤
S
≤
3.9 mA.
The high saturation level must be between 20.5 mA and the high alarm value minus 0.1 mA for the HART
transmitter. The highest saturation setting for the transmitter is 20.9 mA.
Example: The high alarm value has been set to 20.8 mA. Therefore, the low saturation level, S, must be as
follows: 20.5
≤
S
≤
20.7 mA.
Preset alarms can either be
1 Rosemount o
r
2 NAMUR-compliant
. Use the failure mode switch on the front
) to set whether the output will be driven to high or
low alarm in the case of failure.
3.9.3
HART output
The HART output command allows the user to make changes to the multidrop address, initiate burst
mode, or make changes to the burst options.
3.9.4
LCD display options
The LCD display option command sets the meter options, including engineering units and decimal point.
Change the LCD display settings to reflect necessary configuration parameters when adding a LCD
display or reconfiguring the transmitter. Transmitters without LCD displays are shipped with the meter
configuration set to “Not Used.”
HART 5 Fast Keys
2, 2, 5, 6
HART 7 Fast Keys
2, 2, 5, 6
HART 5 Fast Keys
2, 2, 8
HART 7 Fast Keys
2, 2, 8
HART 5 Fast Keys
2, 2, 6
HART 7 Fast Keys
2, 2, 6
Summary of Contents for Rosemount 3144P
Page 2: ......
Page 10: ...8 Reference Manual 00809 0100 4021 Rev JA Title Page April 2017 Title Page ...
Page 16: ...6 Reference Manual 00809 0100 4021 Rev JA Introduction April 2017 Introduction ...
Page 38: ...28 Reference Manual 00809 0100 4021 Rev JA Installation April 2017 Installation ...
Page 235: ...225 Reference Manual 00809 0100 4021 Rev JA April 2017 ...