Rosemount 644 Transmitter

The Emerson Rosemount 644 Temperature Transmitter offers a universally flexible and robust solution engineered to meet virtually any industrial temperature measurement need. As a proven, highly accurate device, the 644 is designed to integrate seamlessly into your most demanding applications, maximizing control and reliability across your facility.

The Rosemount 644 Transmitter is built on a platform of choice and precision:

Universal Sensor Input: All models are highly versatile, capable of accepting inputs from a wide array of sensors, including RTDs, Thermocouples (T/C), millivolt (mV), and ohm sources, simplifying inventory and application management.

Protocol Flexibility: Choose the best fit for your control architecture with available HART, FOUNDATION Fieldbus, or PROFIBUS PA communication protocols.

Form Factor Options: Offered in both Head Mount (DIN A) and Rail Mount form factors, ensuring easy installation into existing junction boxes or control cabinets.

Enhanced System Accuracy: Features the revolutionary Transmitter-Sensor Matching functionality.This specialized process dramatically improves overall system accuracy by up to 75% when paired with an RTD sensor, creating an unmatched single measurement point solution.

The Rosemount 644 Transmitter goes beyond basic conversion, incorporating smart features and application-specific designs:

Ambient Temperature Compensation: Built-in functionality ensures precision readings remain consistent despite fluctuations in the surrounding environmental temperature.

Local Indication: Available with an optional LCD display and Local Operator Interface (LOI), providing convenient local measurement indication and simplifying field troubleshooting and configuration.

Application-Specific Enclosures: A variety of enclosure options are available for the Head Mount models, including polished stainless steel housings, specifically designed to meet the strict hygiene requirements of the biotechnology, pharmaceutical, and other sanitary applications.

Complete Point Solution: The Rosemount 644 Transmitter is available as an installation-ready Complete Point Solution, packaged with compatible sensors, thermowells, and enclosures for immediate field deployment.

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