Rosemount 644 Temperature Transmitter

Rosemount 644 Temperature Transmitter

Engineered for versatility, the Rosemount 644 Temperature Transmitter is available with HART™, FOUNDATION™ Fieldbus or PROFIBUS™ protocols in head, field or rail mount styles and a variety of enclosure options. By adding a Local Operator Interface (LOI), you can update your transmitter configuration in the field without tools. For diverse application requirements, this transmitter includes diagnostic capabilities, such as Hot Backup™ capability, sensor drift alert and thermocouple degradation.

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Features

  • Diverse mounting configurations including head, field or rail mount with many enclosure options
  • LOI option eliminates the need for special configuration tools (i.e. field communicator) for ease-of-use
  • Transmitter-sensor matching with Callendar-Van Dusen constants reduces total measurement error
  • Hot Backup™ capability and sensor drift alert with dual sensors ensure measurement integrity
  • Thermocouple degradation diagnostic monitors thermocouple health to detect degradation before failure
  • Minimum and maximum temperature tracking observes temperature extremes for easy troubleshooting
  • Device dashboards provide easy interface for simplified device configuration and diagnostic troubleshooting

Applications

  • Detection, conversion and transmission of temperature in industrial automation control
  • In the field of environmental monitoring, the measurement and transmission of atmospheric temperature, water temperature, ground temperature and other parameters are realized
  • Used in weather stations, hydrological stations, geological exploration and other fields
  • In the field of medical equipment, it realizes the monitoring and transmission of patient body temperature.
  • Applied to the cold chain logistics industry to monitor and record the ambient temperature of logistics vehicles and cold storage

 

Specification

Input Dual and single sensor capability with universal sensor inputs(RTD, T/C, mv, ohms)
output Signal 4-20 mA /HARTTM protocol, FOUNDATIONTM fieldbus protocol, PROFIBUSIM PA protocol
Housing Field mount, DIN A head mount or rail mount
Display/Interface LCD Display, LCD Display with Local Operator Interface(LOI), or LED
Diagnostics Basic diagnostics, Hot BackupTM capability, sensor drift alert, thermocouple degradation, min/max tracking
Calibration Options Transmitter-sensor matching (Callendar-Van Dusen constants), 5-point calibration
Certifications/Approvals SIL 2/3 certified to IEC 61508 by an independent 3rd party, hazardous location, marine type, see full specs for complete list of certifications

 

 

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