Description

Rosemount 644 Temperature Transmitter

Rosemount 644 Temperature Transmitter is a Versatile Temperature Transmitter that delivers field reliability and advanced accuracy and stability to meet demanding process needs.

Features:

• Universal temperature transmitter available with HART, FOUNDATION Fieldbus or PROFIBUS protocol
• Various mounting configurations including sensor head mount, field mount or rail mount with a variety of housing options
• Easy-to-use local operator interface eliminates the need for special configuration tools (such as a Field Communicator)
• Matching the transmitter and sensor using Callendar–Van Dusen constants reduces overall measurement error
• The Hot Backup function and dual-channel sensor drift alarm ensure measurement continuity
• Thermocouple degradation diagnostic function monitors the thermocouple condition to detect wear before failure occurs
• High and low temperature tracking provides a record of temperature extremes for easier troubleshooting
• Control panels offer a user-friendly interface that makes configuration and troubleshooting easy….more

Specifications:

• Input:
  Single- or two-channel converters with universal inputs (resistance thermal converters, thermocouples, mV, Ohm);
• Output signal:
  4-20 mA, HART or FOUNDATION Fieldbus protocol;
• Housing:
  For field mounting, DIN A head or DIN rail;
• Indicator/Interface:
  LCD or LCD with Local Operator Interface;
• Diagnostics:
  Basic diagnostic functions, Hot Backup function, sensor drift alarm, thermocouple deterioration function, tracking temperature minimums and maximums;
• Calibration options:
  Matching of measuring transducer and primary transducer (Callender-Van Dusen constants), 5-point calibration;
• Certification:
  Certified by an accredited independent agency to IEC 61508 for SIL 2 and SIL 3, Hazardous Locations, Marine Applications, see technical documentation for full list of certifications

For complete datasheet ; TSP Controls – Rosemount 644 Temperature Transmitter Datasheet – 1

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