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.

Features

• Extremely versatile temperature transmitter available in HART™, FOUNDATION™ Fieldbus or PROFIBUS™ protocols
• 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