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Reference Manual
00809-0100-4021, Rev DA
November 2004
3-21
Rosemount 3144P
HART
Transmitter Behavior with Intermittent Sensor Detect OFF
When the Intermittent Sensor Detect feature is switched OFF, the transmitter
tracks all process temperature changes, even if they are the consequence of
an intermittent sensor. (The transmitter in effect behaves as though the
threshold value had been set at 100%.) The output delay due to the
intermittent sensor algorithm will be eliminated.
AMS
Right click on the device and select “Configuration Properties” from the
menu. Select the Electronics tab. From the Measurement Filtering Box,
configure the Intermit threshold.
Apply changes made (see “Apply AMS Changes” on page 3-5).
Open Sensor Holdoff
The Open Sensor Holdoff option, at the normal setting, enables the 3144P to
be more robust under heavy EMI conditions. This is accomplished through the
software by having the transmitter perform additional verification of the open
sensor status prior to activating the transmitter alarm. If the additional
verification shows that the open sensor condition is not valid, the transmitter
will not go into alarm.
For users of the 3144P that desire a more vigorous open sensor detection,
the Open Sensor Holdoff option can be changed to a fast setting. With this
setting, the transmitter will report an open sensor condition without additional
verification of the open condition.
AMS
Right click on the device and select “Configuration Properties” from the
menu. Select the Electronics tab. From the Measurement Filtering Box
box, configure the Open Snsr Holdoff.
Apply changes made (see “Apply AMS Changes” on page 3-5).
DIAGNOSTICS AND
SERVICE
Test Device
The Test Device command initiates a more extensive diagnostics routine than
that performed continuously by the transmitter. The Test Device menu lists the
following options:
• 1 Loop test verifies the output of the transmitter, the integrity of the
loop, and the operations of any recorders or similar devices installed in
the loop. The ability to simulate an alarm is also available. See “Loop
Test” below for more information.
• 2 Self Test initiates a transmitter self test. Error codes are displayed if
there is a problem.
• 3 Master Reset sends out a command that restarts and tests the
transmitter. A master reset is like briefly powering down the transmitter.
Configuration data remains unchanged after a master reset.
• 4 Status lists error codes. ON indicates a problem, and OFF means
there are no problems.
HART Fast Keys 1, 3, 6, 4
HART Fast Keys 1, 2, 1