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Rosemount 644 Temperature Transmitter
Rosemount 644 Temperature Transmitter is a versatile and reliable device designed for accurate industrial temperature measurement. Supporting multiple sensor inputs and communication protocols, it features advanced diagnostics and flexible mounting options, ensuring stable performance, easy configuration, and reduced maintenance in demanding process environments.
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Categories: Temperature Transmitter
Description
The Rosemount 644 Temperature Transmitter is a highly versatile and reliable temperature measurement device designed for industrial process applications. It supports a wide range of sensor inputs including RTDs, thermocouples, millivolt, and ohm signals, making it suitable for diverse temperature monitoring requirements. With accuracy up to ±0.10°C, it delivers precise and stable measurements while offering flexible mounting options such as head, field, or rail configurations.
Engineered for ease of use and long-term reliability, the 644 transmitter features advanced diagnostics including Hot Backup™, sensor drift alert, and thermocouple degradation monitoring to ensure measurement integrity. It supports multiple communication protocols such as 4–20 mA with HART, FOUNDATION Fieldbus, and PROFIBUS, enabling seamless integration into modern control systems. Its Local Operator Interface (LOI) allows quick configuration without specialized tools, reducing maintenance time and operational complex.
QTech Safety is a leading supplier of Rosemount 644 Temperature Transmitter in Ireland, offering competitive prices and fast worldwide shipping across United Kingdom (UK), Germany, France, Italy, Spain, United States USA, Canada, Mexico, and Western Australia (Perth). Buy Rosemount Temperature Transmitter from one of Ireland’s most trusted industrial safety equipment suppliers.
Features of Rosemount 644 Temperature Transmitter
- Supports RTD, thermocouple, mV, and ohm inputs
- Single or dual sensor capability for redundancy
- High accuracy: ±0.10°C
- Output: 4–20 mA with HART, FOUNDATION Fieldbus, PROFIBUS
- Available in head, field, and rail mount designs
- Advanced diagnostics: Hot Backup™, sensor drift alert, thermocouple degradation
- Transmitter-sensor matching improves accuracy
- Local Operator Interface (LOI) for easy configuration
- LCD display option for local indication
- SIL 2/3 certified for safety applications
Technical Specifications of Rosemount 644
- Type: Smart head or rail mount temperature transmitter
- Input types: Single or dual RTD, Thermocouple, mV, Ohm
- Accuracy: ±0.15°C (±0.27°F) for Pt100 RTD
- Output: 4-20 mA with HART, FOUNDATION Fieldbus, Profibus PA
- Ambient temperature: -40°C to +85°C (-40°F to +185°F)
- Process temperature: -200°C to +850°C (-328°F to +1562°F) depending on sensor
- Power supply: 12 to 42 V DC
- Enclosure: IP66 / NEMA 4X (aluminum or stainless steel)
- Mounting: Head mount (integral) or rail mount
- Certifications: Hazardous area approvals, SIL capable
Temperature Transmitter Part Number & Configuration Guide
Standard (Example) Part Number
644HANA
This is a reference configuration for the Rosemount Temperature Transmitters. It represents one commonly supplied setup and helps customers understand how the part number is structured.
Configurable Part Number Format
644XXXX
Each X / XX in the part number indicates a selectable option that can be customized based on your application requirements such as Transmitter Type, Transmitter Housing Type, Output, Materials of Construction, Measurement Configuration, Enhanced Performance, Display, Line Voltage Filter & Calibration Certification.
✅ Important: Final part number depends on the exact configuration needed for your machinery, environment, and monitoring system.
Applications
The Rosemount 644 Temperature Transmitter is commonly used in industrial calibration and testing applications, including:
- Oil & gas temperature monitoring
- Chemical and petrochemical processing
- Power generation systems
- Food & beverage and pharmaceutical industries
- General industrial temperature measurement
Why Choose QTech Safety?
At QTech Safety, we’re more than just a safety supplier we’re your trusted partner in workplace protection and compliance.
Here’s why companies across UK and Ireland (EU) choose us for safety products and training:
- Comprehensive Range of Safety Equipment:
From gas detection and PPE to industrial safety tools, we offer one of the widest selections of trusted brands all at competitive Irish market prices. - Test & Measurement Instruments You Can Trust:
We supply a wide range of test and measurement instruments from the most leading and trusted brands, including industrial sensors, multimeters, oscilloscopes, accelerometers, proximity sensors, and other advanced measurement tools to support accurate diagnostics, condition monitoring, calibration, and maintenance applications. - Expert Health & Safety Training:
We provide professional health and safety training programmes designed to help your workforce stay compliant and confident on the job. - Fast, Reliable Delivery Worldwide:
Whether you’re in Texas United States or Perth Western Australia, our fast delivery service ensures you get your safety equipment quickly and efficiently. - Trusted by European Businesses:
We’re proud to support industries across Europe (UK) with certified safety solutions, expert advice, and responsive customer service.
We Ship Worldwide
At QTech Safety, we supply industrial sensors and instrumentation across Ireland, offering fast and reliable worldwide delivery. Through strong global logistics partnerships, we ensure efficient shipping and professional support for customers in Europe, North America, and Australia.
🡆 Europe (United Kingdom, Ireland, Germany, France, Italy, Spain, and the rest of European Union)
🡆 Australia (Western Australia WA, Queensland QLD, and New South Wales NSW)
🡆 North America (United States, Canada, Mexico)
