Industrial 644 Temperature Transmitter, 4–20mA Output, Precision Process Control

Industrial 644 Temperature Transmitter, 4–20mA Output, Precision Process Control

Details:

The Rosemount 644 Temperature Transmitter delivers reliable and accurate temperature measurement for a wide range of industrial applications. Designed for flexibility, it supports both head‑mount and DIN rail installations, providing seamless integration into existing systems. With a standard 4–20mA output and HART® communication, the 644 Temperature Transmitter ensures precise signal transmission, easy configuration, and advanced diagnostics. Its robust design guarantees long‑term stability and dependable performance, even in demanding process environments. Engineered for precision process control, the Rosemount 644 Temperature Transmitter helps optimize efficiency, safety, and productivity across industries.

Product Features

• High Accuracy – Provides measurement precision up to ±0.1 °C or ±0.1% of span, ensuring reliable process control.
• Flexible Input Compatibility – Supports a wide range of sensors, including RTDs (2‑, 3‑, 4‑wire), thermocouples, and millivolt signals.
• Standardized Output – Delivers a 4–20mA output with HART® communication for seamless integration into control systems.
• Versatile Mounting Options – Available in head‑mount and DIN rail‑mount configurations to fit diverse installation needs.
• Advanced Diagnostics – Detects sensor drift, thermocouple degradation, and provides hot backup for dual sensor applications.
• Robust Design – Engineered for long‑term stability and dependable performance in harsh industrial environments.
• Easy Configuration – Supports local and remote setup via handheld communicator or asset management software.
• Global Certifications – Meets ATEX, FM, CSA, and IECEx standards for use in hazardous and safety‑critical applications.
• Wide Application Range – Ideal for industries such as oil & gas, chemical, power generation, water treatment, and general process automation.

Packing:

Certs:

Product Applications

• Oil & Gas Industry
• Monitoring process temperatures in pipelines, separators, and refineries
• Ensuring safety and efficiency in hazardous environments with explosion‑proof options

• Chemical & Petrochemical Plants
• Accurate temperature control in reactors, distillation columns, and storage tanks
• Diagnostics (sensor drift, thermocouple degradation) support predictive maintenance

• Power Generation
• Steam temperature measurement in boilers and turbines
• Reliable monitoring in high‑temperature, high‑pressure environments

• Water & Wastewater Treatment
• Process temperature monitoring in filtration, disinfection, and chemical dosing systems
• Enhancing process stability and compliance with environmental standards

• Food & Beverage / Pharmaceuticals
• Precise temperature control for sterilization, fermentation, and batch processing
• Supports hygienic installations with stainless steel housing options

• General Industrial Automation
• Flexible head‑mount or DIN rail installation for OEM skids, HVAC, and factory automation
• Standard

Frequently Asked Questions (FAQ)

Q1: What is the output signal of the Rosemount 644?

A1: The Rosemount 644 Temperature Transmitter provides a standard 4–20mA output with HART® communication for seamless integration into control systems.

Q2: What types of sensors can it support?

A2: It is compatible with a wide range of inputs, including RTDs (2‑, 3‑, 4‑wire), thermocouples (J, K, T, E, N, R, S, B), and millivolt signals.

Q3: What mounting options are available?

A3: The 644 is available in both head‑mount and DIN rail‑mount versions, offering flexibility for different installation needs.

Q4: How accurate is the Rosemount 644?

A4: It delivers measurement accuracy up to ±0.1 °C or ±0.1% of span, depending on the sensor type and range.

Q5: Can it be used in hazardous environments?

A5: Yes. The 644 is available with global certifications (ATEX, FM, CSA, IECEx) and can be installed in hazardous or safety‑critical areas.

Q6: How is the transmitter configured?

A6: Configuration can be done locally using a handheld Field Communicator or remotely via asset management software such as AMS.

Q7: What industries typically use the Rosemount 644?

A7: It is widely applied in oil & gas, chemical, power generation, water treatment, food & beverage, and general industrial automation.

Q8: What are the advantages compared to entry‑level models?

A8: Compared to basic transmitters (e.g., Rosemount 248), the 644 offers higher accuracy, advanced diagnostics, dual sensor capability, and flexible mounting options.

Good Service

• Please send your RFQ to get the latest price.
• Fast Delivery: Items will be shipped within 3–5 working days after receiving payment.
• Flexible Shipping Options: We can ship via UPS / DHL / EMS / FedEx — or use your preferred carrier upon request.
• Large Stock & Competitive Pricing: With ample inventory and variable pricing, we can always offer you a good price. For specific quotations, please contact us directly.