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EN
Rosemount Inc
TRANSMITTER OVERVIEW
Thank you for choosing the Model 644 Smart Temperature Transmitter. Features of
the Model 644 include:
• Accepts inputs from a wide variety of sensors
• Configuration using HART protocol
• Electronics that are completely encapsulated in epoxy and enclosed in a
metal housing, making the transmitter extremely durable and ensuring
long-term reliability
• A compact size and two housing options allowing mounting flexibility for the
control room or the field
Rosemount Inc. has a full range of compatible connection heads, sensors, and
thermowells to provide complete assemblies for process temperature
measurements. Refer to Volume 1 of the Rosemount Temperature Sensors and
Assemblies Product Data Sheet (document number 00813-0100-2654) for thread
mount sensors and accessories. Refer to Volume 2 (document number
00813-0101-2654) for DIN-style sensors and accessories.
MANUAL OVERVIEW
This manual is designed to assist in the installation, operation, and maintenance of
Rosemount
®
Models 644H and 644R.
Section 2: Installation
• Installation tools
• Mounting
• Installation
• Field wiring
Section 3: Operation
• Power supply
• Configuration
Section 4: Hardware and Software Maintenance and Troubleshooting
• Hardware maintenance
• Diagnostic messages
Appendix A: Reference Data
• Specifications
• Dimensional drawings
• Ordering information
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