Rosemount 644RA15 Temperature Transmitter

The Rosemount 644 is a Versatile Temperature Transmitter that delivers field reliability and advanced accuracy and stability to meet demanding process needs Single sensor input for RTD, Thermocouple, . Custom alarm and saturation levels. Transmitter-Sensor Matching with Callendar Van Dusen constants. Hardware alarm switch.

Product Details

Rosemount 644RA15 Temperature Transmitter



Rosemount 644 FOUNDATION fieldbus  

Single sensor input for RTD, Thermocouple, mV and Ohm 

DIN A Head mount transmitter 

Standard function blocks: 2 Analog Inputs, 1 PID and 1 Backup Link Active Scheduler (LAS)  

LCD Display

ITK 5.01 Compliant 

Transmitter Sensor Matching with Callendar Van Dusen constants




Rosemount 644 PROFIBUS PA 

Single sensor input for RTD, Thermocouple, mV and Ohm

DIN A Head mount transmitter 

Standard function blocks: 1 physical, 1 Transducer, and 1 Analog Out

LCD Display

Compliant to PROFIBUS PA Profile 3.02

Transmitter-Sensor Matching with Callendar Van Dusen constants



Easy to use human-centered designs to make your job simple 

Diagnostic information and process health at your finger tips with intuitive Device Dashboards. 

Communication clips are easily accessible when an LCD display is attached. 

Easy wiring practices with captive sensor screw terminals, an optimized wiring diagram, and field mount enclosure option.




Transmitter features include: 

HART/4-20 mA with Selectable Revision 5 and 7 selectable  (Option Code A), FOUNDATION fieldbus (Option Code F) or  PROFIBUS PA (Option Code W) 

DIN A Head Mount, Field Mount, or Rail Mount transmitter  styles 

Dual Sensor Input (Option Code S) 

SIS SIL 2 Safety Certification (Option Code QT) 

LCD Display (Option Code M5) 

Local Operator Interface (Option Code M4)

Advanced Diagnostics (Option Codes DC and DA1) 

Enhanced Transmitter Accuracy and Stability  (Option Code P8) 

Transmitter-Sensor Matching (Option Code C2)


Humidity limits                            Housing and standard meter cover                         Accuracy (default configuration) PT 100

 0–95% relative humidity                         316 SST                                                                         HART Standard: ±0.15 °C

Update time                                    Cover O-ring                                                                  HART Enhanced: ±0.1 °C

   0.5 sec. per sensor                           Buna-N                                                                         FOUNDATION fieldbus: ±0.15 °C

                                                                                                                                                    PROFIBUS PA: ±0.15 °C




Rosemount 644 Dimensional Drawing


644 (2)


644 (3)

644 (4)



Company  profile


Shaanxi Tebess Electronic Technology Co. LTD established on June 8th of 2010. 

We are authorized instruments distributor of yokogawa, Rosemount, Endress Hauser, honeywell , ABB, YTC .

We offer original products in best price and fastest delivery time, especially for pressure transmitter,

temperature transmitter,flow meterS and valve positioner.



Forwarder    introduce


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