New Rosemount 644 with Multi-Protocol Support Field Installation Type Smart Temperature Transmitter

• Customization: Available
• Type: Wall-Mounted Current Type
• Measuring Medium: Temperature
• Model NO.: 644
• Display Type: LCD
• Site Display: Site Display
• Accuracy: 0.1
• IP Rating: IP67
• Certification: CE
• Customized: Customized
• Item Name: 644 Temperature Transmitter
• Warranty: 1 Year
• MOQ: 1PC
• Supply Voltage: 24VDC
• Protocols: Hart, Fpa
• Electric Connect: 1/2"NPT
• Explosion: IEC Exia Iic T4
• Thermowell Diameter: 5~11mm
• Extended: 80 or Customized
• Range: -200~850°c
• Place of Origin: China, Singapore
• Thermowell Material: 316L Stainless Steels
• Opere Temperature: -20~80ºC
• Antenna Type: External (Standard and Extended Range)
• Update Rate: 4 Sec. to 60 Min., User Selectable
• Transport Package: Carton Boxes, Wooden Crates
• Specification: 21*18*12cm
• Trademark: Rosemount
• Origin: China, Singapore
• HS Code: 90262010
• Production Capacity: 100/Month
• Package Size: 25.00cm * 20.00cm * 15.00cm
• Package Gross Weight: 8.000kg

Product Description

Product Description

The Rosemount 644 is designed to be a comprehensive solution for temperature measurement and transmission. It can interface with a variety of temperature sensors, including RTDs (Resistance Temperature Detectors), thermocouples, as well as millivolt and ohm - based sensors. This wide sensor compatibility makes it suitable for use in a vast number of applications, whether it's measuring the temperature of a chemical reaction in a reactor, monitoring the temperature of a steam turbine in a power plant, or controlling the temperature in a food processing facility.

Versions: The Rosemount 644 supports the 4 - 20 mA/HART protocol, with options for both Revision 5 and Revision 7. The HART protocol is widely used in industrial settings as it allows for digital communication superimposed on the analog 4 - 20 mA signal. This means that in addition to transmitting the standard analog signal representing the measured temperature, the transmitter can also send and receive digital data. For example, it can communicate diagnostic information, configuration details, and sensor status. Revision 7 of the HART protocol offers enhanced functionality such as improved communication speed, increased data capacity, and better compatibility with modern control systems.
Benefits: With HART support, users can easily integrate the Rosemount 644 into existing HART - enabled control systems. This seamless integration reduces the complexity of system installation and maintenance. Operators can use HART - compliant handheld devices or software on a PC to configure the transmitter, read real - time temperature values, and access diagnostic data. This is particularly useful for field technicians who need to quickly troubleshoot any issues with the temperature measurement system.

Features

Functionality: When operating with the FOUNDATION Fieldbus protocol, the Rosemount 644 provides standard function blocks such as 2 analog input blocks, 1 PID (Proportional - Integral - Derivative) block, and 1 spare Link Active Scheduler (LAS). The analog input blocks are responsible for accurately receiving and processing the signals from the temperature sensors. The PID block enables advanced control capabilities, allowing for precise regulation of temperature - related processes. The spare LAS ensures reliable communication within the fieldbus network, providing redundancy in case of any communication failures.Advantages: The FOUNDATION Fieldbus protocol is known for its high - speed, reliable, and deterministic communication. It allows for multi - drop connections, meaning multiple Rosemount 644 transmitters can be connected to a single fieldbus segment. This reduces the amount of cabling required, leading to cost savings in installation and maintenance. Additionally, the use of function blocks simplifies the configuration and programming of control strategies, making it easier for engineers to design and implement complex temperature control systems.

Product Overview

Features: For PROFIBUS PA applications, the Rosemount 644 comes with standard function blocks including 1 physical module, 1 sensor block, and 1 analog input block. The physical module is responsible for the physical layer communication within the PROFIBUS PA network, ensuring proper signal transmission and reception. The sensor block interfaces with the temperature sensor, while the analog input block processes the sensor signal. It also complies with the PROFIBUS PA Profile 3.02, which ensures interoperability with other PROFIBUS PA - compliant devices in the network.Value Proposition: PROFIBUS PA is widely used in industrial automation, especially in process control applications. The Rosemount 644's support for this protocol makes it an ideal choice for industries such as oil and gas, where PROFIBUS PA networks are commonly deployed. The compliance with the profile ensures that the transmitter can work seamlessly with other devices in the network, reducing the risk of compatibility issues and ensuring smooth operation of the overall temperature measurement and control system.One of the main advantages of the DIN head - mounted type is its close proximity to the sensor. This reduces the length of the sensor leads, minimizing the effects of electrical interference and signal attenuation. As a result, it can provide more accurate temperature measurements. Additionally, the compact design makes it easy to access for maintenance and calibration purposes. Technicians can quickly remove and replace the transmitter if needed, without having to deal with complex wiring or disassembly of other components.

Product Parameters

Model NO.	644	Display Type	LCD
Site Display	Site Display	Accuracy	±0.18°c
IP Rating	IP67	Certification	CE
Customized	Customized	Opere Temperature	-20~80ºC
Supply Voltage	24VDC	Range	-200~850°c
Transport Package	Carton Boxes,Wooden crates	Thermowell Material	316L Stainless Steels
Electric Connect	1/2"NPT	Protocol	HART,FPA
Origin	China, Singapore	Insert Length	Customizable

Packaging & Shipping

Carton Boxes

Company Profile

KeRui (Weifang) Automation Equipment Co., Ltd.Specializes in industrial automation instrument development, production and sales, technical services, and supporting equipment supply to specialized companies. The main products are flow meters, level meters, temperature meters, pressure meters, electrical meters, thermal intelligent meters, programmable controllers (PLC), DCS distributed control systems, and eight series of more than 1,000 specifications. Its products and technologies are widely used in electric power, metallurgy, petrochemicals, environmental protection, plastics, food, printing, tobacco, textile, dyeing, and other fields.

FAQ

 1.Q: How long is the delivery?
 -- Mostly within 10days
 2.Q:Can I get a sample? 
 --  Sure, contact our sales please
 3.Q:What is your MOQ? 
 --  1pcs
 4.Q: How about warranty time? 
 -- 12month
 5.Q: How can I visit your factory?
 -- Fly to Qingdao air port, it's our pleasure to pick you up.
 6.Q:How do you control your quality ? 
 -- We have EPR system .we control from parts, process, testing, packing ,retesting.
 Every Sensor will be tested two times before reach you, after that sport test for the third time. Make sure about the quantity.