Reference Manual
00809-0100-4021, Rev FB
August 2011
Rosemount 3144P
A-18
Custom Configuration
The 3144P transmitter can be ordered with custom configuration. The table below lists the requirements necessary
to specify a custom configuration.
(1) CDS required
To custom configure the 3144P with the dual-sensor option transmitter for one of the applications described below,
indicate the appropriate option code in the model number. If a sensor type is not specified, the transmitter will be
configured for two 3-wire Pt 100 ( = 0.00385) RTDs if any of the following option codes are selected.
Option Code Requirements/Specification
C1:
Factory Data
(1)
Date: day/month/year
Descriptor: 16 alphanumeric character
Message: 32 alphanumeric character
Custom Alarm Levels can be specified for configuration at the factory.
C2:
Transmitter-Sensor Matching
The transmitters are designed to accept Callendar-van Dusen constants from a calibrated RTD
schedule and generate a custom curve to match any specific sensor curve. Specify a Series 68, 65, or
78 RTD sensor on the order with a special characterization curve (V or X8Q4 option). These constants
will be programmed into the transmitter with this option.
C4:
Five Point Calibration
Will include five-point calibration at 0, 25, 50, 75, and 100% analog and digital output points.
Use with option code Q4 to obtain a Calibration Certificate.
C7:
Special Sensor
Used for non-standard sensor, adding a special sensor or expanding input.
Customer must supply the non-standard sensor information. Additional special curve will be added to
sensor curve input choices.
A1: NAMUR-
Compliant, high alarm
Analog output levels compliant with NAMUR. Alarm is set to fail high.
CN: NAMUR-
Compliant, low alarm
Analog output levels compliant with NAMUR. Alarm is set to fail low.
C8: Low Alarm Analog output levels compliant with Rosemount standard. Alarm is set to fail low.
F5: 50 Hz Line Filter Calibrated to 50 Hz line voltage filter.
Option Code U1
Hot Backup Configuration
Primary Usage Primary usage sets the transmitter to automatically use sensor 2 as the primary input if sensor 1 fails.
Switching from sensor 1 to sensor 2 is accomplished without any effect on the analog signal.
Primary Variable Sensor 1
Secondary Variable Sensor 2
Tertiary Variable Terminal (Body) Temperature
Quaternary Variable Not Used
Option Code U2
Average Temperature with Hot Backup and Sensor Drift Alert – Warning Mode
Primary Usage Critical applications, such as safety interlocks and control loops. Outputs the average of two
measurements and alerts if temperature difference exceeds the set maximum differential (Sensor Drift
Alert). If a sensor fails, an alert will be sent and the primary variable will hold working sensor measurement.
Primary Variable Sensor Average
Secondary Variable Sensor 1
Tertiary Variable Sensor 2
Quaternary Variable Terminal Temperature
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