Rosemount 644ranaq4 Temperature Transmitter

Overview of the Rosemount 644ranaq4

The Rosemount 644ranaq4 is a head-mount temperature transmitter that is designed for accuracy and versatility. The model is meant to convert RTD (Resistance Temperature Detector) sensor signals into an output signal of 4–20 mA, which is widely supported by control systems.

Supported by the HART (Highway Addressable Remote Transducer) protocol, it offers superior diagnostics, configuration, and calibration through a standard digital communication interface.

Key Specifications:

Model No: 644ranaq4

Sensor Type: Pt100_385, 3-wire RTD

Output Signal: 4–20 mA

Power Supply: 12.0 to 42.4 VDC

Temperature Range: 0 to 200°C

Hardware Version: 30

Software Version: 571

Weight: Approx. 120 grams

Country of Origin: Singapore

Part Number: 00644-6412-1005

Reference Number: 66574

Advanced Features

HART Protocol Enabled
One of the key features of the 644ranaq4 is its HART communication. This enables plant operators and technicians to remotely perform device diagnostics and recalibration, increasing maintenance efficiency and system uptime.

High Accuracy and Stability
With Pt100 RTD sensor support and a stable transmitter circuit, customers can look forward to precise temperature measurement even in process conditions that vary.

Compact and Light
Weighing a mere 120 grams, this compact device is simple to fit into space-limited locations, especially useful in marine and industrial equipment configurations.

Large Supply Voltage Range
Operating effectively within a supply voltage range of 12.0 to 42.4 VDC, it accommodates well to varying power conditions without compromising performance.

Applications

The Rosemount 644ranaq4 Temperature Transmitter is very versatile and is generally applied in:

• Marine automation systems
• Oil and gas plants
• Chemical processing units
• Power generation facilities
• Pharmaceutical production
• Food and beverage industries

Its rugged construction and wide temperature range make it particularly well-suited for applications where precise and continuous monitoring is vital.

Advantages of Using Rosemount 644ranaq4

Minimized Downtime
Due to its diagnostic and configuration functions, diagnostic time is minimized, thus reducing unplanned downtime.

Reliable Output
4–20 mA output, which is the industry standard, is compatible with a wide range of PLCs and DCS systems.

Worldwide Credibility
Singapore-made and supported by the Emerson-Rosemount heritage, the 644ranaq4 is relied on worldwide for long-lasting reliability and accuracy.

Why Use Rosemount?

Rosemount has earned its position through continuous delivery of sound instruments supported by innovation and dedication to field demands. The 644ranaq4 is not different – it combines smart technology with robust construction to provide quantifiable gains in operational efficiency.