Rosemount Temperaturmessumformer 3144

The Rosemount 3144P Temperature Transmitter provides superior accuracy, stability, and reliability – making it the industry-leading temperature transmitter used in critical control and safety applications. The 3144P can be ordered with either 4–20 mA/HART or a completely digital FOUNDATION fieldbus protocol. It has the capability to accept either single-sensor or dual-sensor inputs. This dual-sensor input capability allows the transmitter to accept simultaneous input from two independent sensors, enabling measurement of differential temperatures, averaging temperature, or redundant temperature measurement. The transmitter can be configured for a variety of sensor inputs: RTD, thermocouple, millivolt, or ohm. The 3144P (HART) is approved for use in Safety Instrumented Systems (third party validated metrics are available for the 3144P. Testing done per IEC 61508 for Safety Instrumented Systems). Best in Class Accuracy and Reliability The transmitter provides industry-leading five-year stability, which reduces maintenance costs. The Transmitter-Sensor Matching feature eliminates interchangeability error, which improves accuracy by 75%. Sensor Drift Alert enables continuous monitoring of the differential temperature for two sensors. When one sensor drifts, the differential of the sensors will increase. If this difference exceeds defined limits, the user is alerted of an unreliable measurement. The Hot Backup feature can reduce the risk of losing important temperature measurements by 80% when the measurement automatically switches to the backup sensor if the primary sensor fails. Reliable Transmitter Performance Meeting the NAMUR NE 21 recommendations, the 3144P ensures top transmitter performance in harsh EMC environments. In addition, the 3144P HART transmitter meets NAMUR NE 43 and NE 89 recommendations. FOUNDATION Fieldbus and HART Protocols High performance and advanced diagnostics are available with HART or FOUNDATION fieldbus communication. These transmitters offer diagnostics that provide continuous measurement status (good, bad, or uncertain), as well as sensor failure indication. Both transmitters provide performance information to AMS. Integral LCD Display Local indication of temperature measurement and diagnostics provides immediate and accurate verification of process conditions. Measurement Flexibility The 3144P is capable of single-sensor or dual-sensor input. This also allows for configuration of differential or average temperature measurements. Designed for Harsh Environments The 3144P is designed with a dual-compartment housing that provides the highest reliability in harsh environments. The dual-compartment housing provides isolation between the electronics and terminal compartments. The large terminal block allows for easier wire installation. Enhanced EMI rejection and filtering result in unmatched stability in process measurement. Certified for use in SIS Applications The 3144P is certified to IEC61508 for non-redundant use in SIL 1 and 2 Safety Instrumented Systems and redundant use in SIL 3 Safety Instrumented Systems. In allowable installations, the 3144P HART electronics can be upgraded to safety certified electronics. Advanced Temperature Diagnostics The advanced 3144P powers PlantWeb® by communicating important temperature diagnostics and PlantWeb alerts to ensure process health and enable multi-sensor architecture. Diagnostic Logging The 3144P Temperature Transmitter keeps a record of any diagnostic information and logs the item to the database. The log is retained as long as the device has power or can be reset by the user via the Field Communicator or AMS. Statistical Process Monitoring (SPM) Detect abnormal process situations with a means and standard deviation calculation by the transmitter. Thermocouple Diagnostic Use the transmitter to monitor the resistance of thermocouple loops in order to detect drift conditions or changing wiring conditions. HART® AND FOUNDATION™ FIELDBUS Functional Specifications Inputs User-selectable. See “Accuracy” on page 4 for sensor options. Output 2-wire device with either 4–20 mA/HART, linear with temperature or input, or completely digital output with FOUNDATION fieldbus communication (ITK 5.0.1 compliant). Isolation Input/output isolation tested up to 500 V ac (707 V dc) at 50/60 Hz. Humidity Limits 0–99% relative humidity. Update Time Approximately 0.5 seconds for a single sensor (1 second for dual sensors). Physical Specifications Conduit Connections The standard field mount housing has ½–14 NPT conduit entries. Additional conduit entry type are available, including PG13.5 (PG11), M20 X 1.5 (CM20), or JIS G ½. When any of these additional entry types are ordered, adapters are placed in the standard field housing so these alternative conduit types fit correctly. See “Dimensional Drawings” on page 17 for dimensions. Materials of Construction Electronics Housing • Low-copper aluminum or CF-8M (cast version of 316 Stainless Steel) Paint • Polyurethane Cover O-rings Buna-N Mounting Transmitters may be attached directly to the sensor. Optional mounting brackets (codes B4 and B5) allow for remote mounting. Enclosure Ratings NEMA 4X, CSA Enclosure Type 4X, IP66, and IP68. Stability • RTDs - ±0.1% of reading or 0.1 °C, whichever is greater, for 24 months. • Thermocouples - ±0.1% of reading or 0.1 °C, whichever is greater, for 12 months. 5 Year Stability • RTDs - ±0.25% of reading or 0.25 °C, whichever is greater, for 5 years. • Thermocouples - ±0.5% of reading or 0.5 °C, whichever is greater, for 5 years. Vibration Effect Tested to the following with no effect on performance per IEC 60770-1, 1999. Self Calibration The analog-to-digital measurement circuitry automatically self-calibrates for each temperature update by comparing the dynamic measurement to extremely stable and accurate internal reference elements. RFI Effect Worst case RFI effect is equivalent to the transmitter’s nominal accuracy specification, according to Table on page 4, when tested in accordance with IEC 61000-4-3, 30 V/m (HART) / 20 V/m (HART T/C) /10 V/m (FOUNDATION fieldbus), 80 to 1000 MHz, with unshielded cable. CE Electromagnetic Compatibility Compliance Testing The 3144P meets or exceeds all requirements listed under IEC 61326: 2006. External Ground Screw Assembly The external ground screw assembly can be ordered by specifying code G1. However, some approvals include the ground screw assembly in the transmitter shipment, hence it is not necessary to order code G1. The table below identifies which approval options include the external ground screw assembly.