| Attribute | Value |
|---|---|
| Brand | Rosemount |
| Series | Smart Family |
| Protocol | HART |
| Model | 644r |
| Type | Temperature Transmitter |
| Model Number | 644ranaq4 |
| Output | 4-20 mA |
| Supply Voltage | 12.0-42.4 VDC |
| Sensor | Pt100_385, 3 Wire |
| Range | 0 to 200 °C |
| Serial Numbers | 00644-1111-0001, 00644-1111-0002 |
| Revision | Rev. AA |
| Part Number | 00644-6412-1005 |
| Hardware Version | HW: 30 |
| Software Version | SW: 571 |
| Country of Origin | Made in Singapore |
| Weight | 120 gm |
| Reference Number | 66574 |
What is the Rosemount 644RANAQ4?
The Rosemount 644RANAQ4 is a temperature transmitter that translates sensor signals from RTDs (Resistance Temperature Detectors) or thermocouples to a standardized output signal—usually 4–20 mA or digital HART protocol. This feature guarantees trouble-free integration with control systems and data acquisition devices in various industries.
Key Features
High Accuracy
The 644RANAQ4 offers accurate readings with minimal drift due to sophisticated signal conditioning and compensation algorithms. It is best suited for critical applications that demand consistent thermal information.
HART Communication Protocol
The model features the HART (Highway Addressable Remote Transducer) protocol, allowing two-way digital communication with control systems for diagnostics, configuration, and calibration without interrupting operations.
Smart Diagnostics
Integrated diagnostics check sensor integrity and loop operation. The transmitter sends out warnings for sensor failure, enabling maintenance personnel to act ahead of time and minimize downtime.
Flexible Mounting Options
Whether you require head-mount or rail-mount configurations, the 644RANAQ4 is flexible enough to fit your system design. Its compact and rugged design simplifies installation, even in confined areas.
Wide Temperature Range Compatibility
It accommodates a broad range of RTDs and thermocouples, across a broad temperature range—everything from cryogenic processes to high-heat manufacturing.
Applications
The Rosemount 644RANAQ4’s versatility allows it to be applied in a broad range of industries:
Oil & Gas: Track pipeline and refining temperatures with confidence.
Power Generation: Achieve accurate steam and combustion control.
Chemical Processing: Ensure safe reaction temperatures.
Marine Engineering: Track engine and system temperatures on board ships.
Pharmaceutical & Food Production: Maintain consistent temperature control for batch quality and safety.
Advantages of Rosemount 644RANAQ4
Increased Process Reliability: Reduce measurement errors and downtime.
Cost-Effective Maintenance: Predictive diagnostics reduce the risk of unplanned failures.
Digital Integration: Smooth communication with advanced plant systems through HART.
Longevity & Durability: Designed to survive in harsh environments such as high vibration, humidity, and corrosive environments.
Why Rosemount?
Emerson’s Rosemount series has long been relied on for its reliability, innovation, and industry-leading accuracy. When mission-critical process automation is at stake, the 644RANAQ4 is a reliable option to rely on backed by decades of sensor technology expertise.
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