The Rosemount 644 temperature transmitter is engineered for control applications where the loss of temperature points can cause significant issues. These highly precise Rosemount 644 temperature transmitters come in various mounting options, field housings, and communication protocols to suit your installation needs.
Specifications
Input | Dual and single sensor capability with universal sensor inputs (RTD, T/C, mV, ohms) |
Output Signal | 4-20 mA /HART™ protocol, FOUNDATION™ fieldbus protocol, PROFIBUS™ PA protocol |
Housing | Field mount, DIN A head mount or rail mount |
Display/Interface | LCD Display, LCD Display with Local Operator Interface (LOI), or LED |
Diagnostics | Basic diagnostics, Hot Backup™ capability, sensor drift alert, thermocouple degradation, min/max tracking |
Calibration Options | Transmitter-sensor matching (Callendar-Van Dusen constants), 5-point calibration |
Certifications/Approvals | SIL 2/3 certified to IEC 61508 by an independent 3rd party, hazardous location, marine type, see full specs for complete list of certifications |

Rosemount 644 Temperature Transmitter
We offer the Rosemount 644 Temperature Transmitter at a competitive price, ensuring exceptional value without compromising quality.
✅Exceptional service: Backed by our commitment to customer satisfaction, we provide comprehensive support and guidance to ensure seamless integration and operation.
✅Free Configuration: Our free configuration service is tailored to your specific application needs, ensuring optimal performance from installation.
✅Fast Delivery: With an efficient logistics network, we guarantee fast delivery of your Rosemount 644 Temperature Transmitter so you can complete your project on schedule with confidence.