Reference Manual
00809-0100-4021, Rev FB
August 2011
Rosemount 3144P
1-2
Appendix A: Reference Data
• Specifications
• Dimensional Drawings
• Ordering Information
Appendix B: Product Certifications
• Product Certifications
• Installation Drawings
Safety Instrumented System (SIS) – HART only
• Information regarding Safety Certified transmitters
Transmitter Features of the Rosemount 3144P include:
• Acceptance of inputs from a wide variety of sensors
• Configuration using HART protocol or F
OUNDATION fieldbus
• Electronics completely encapsulated in epoxy and enclosed in a metal
housing, making the transmitter extremely durable, ensuring long-term
reliability
• Two housing material options that allow mounting flexibility for a variety
of environmental conditions
• Special dual-sensor features include Hot Backup
®
, Sensor Drift Alert,
first good, differential and average temperature measurements, and
four simultaneous measurement variable outputs in addition to the
analog output signal
•F
OUNDATION fieldbus features include: Thermocouple Degradation
Diagnostic, which indicates thermocouple health, and process and
transmitter Minimum/Maximum Tracking.
Refer to the following literature for a full range of compatible connection
heads, sensors, and thermowells provided by Emerson Process
Management:
• Temperature Sensors and Assemblies Product Data Sheet, Volume 1
(document number 00813-0100-2654)
• Temperature Sensors and Assemblies Product Data Sheet, Metric
(document number 00813-0200-2654)
CONSIDERATIONS
General Electrical temperature sensors, such as resistance temperature detectors
(RTDs) and thermocouples (T/Cs), produce low-level signals proportional to
temperature. The 3144P transmitter converts low-level signals to HART or
F
OUNDATION fieldbus and then transmits the signals to the control room via
two power/signal wires.
Electrical Proper electrical installation is essential to prevent errors due to sensor lead
resistance and electrical noise. For HART communications, the current loop
must have between 250 and 1100 ohms resistance. Refer to Figure 2-10 on
page 2-12 for sensor and current loop connections. F
OUNDATION fieldbus
devices must have proper termination and power conditioning for reliable
operation. Shield cables must be used for F
OUNDATION fieldbus and may only
be grounded in one place.
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