| Product name | Rosemount 644 Temperature Transmitter |
|---|---|
| Material | Aluminum, Stainless Steel |
| Sensor Input Channels | Single sensor input |
| Output Signal | 4-20 mA with HART 5/6/7 |
| Power Supply | 12-42.4 VDC (minimum 10.5 VDC for digital only) |
| Mounting Options | Head mount (644H), Rail mount (644R) |
| Ingress Protection | IP66/67 |
| Protocol Support | HART, FOUNDATION Fieldbus, PROFIBUS PA |
The Emerson Rosemount 644 Temperature Transmitter is a smart, HART-enabled device designed for precise temperature measurement in industrial environments. Engineered with advanced diagnostics, it monitors sensor health, loop integrity, and process conditions to minimize downtime. Customizable for RTDs, thermocouples, and millivolts, this transmitter delivers reliable performance in harsh applications like chemical processing, power generation, and oil & gas.
| Input Types | RTD (Pt100), Thermocouple (J/K/T/E), mV |
|---|---|
| Accuracy | ±0.15°C (RTD), ±0.5°C (Thermocouple) |
| Communication | HART 7, AMS Trex compatible |
| Power Supply | 12-45V DC (loop-powered) |
| Environmental Rating | IP67, NEMA 4X |
| Temperature Range | -40°C to 85°C (-40°F to 185°F) |
| Materials | 316L stainless steel, aluminum alloy |
| Certifications | ATEX, IECEx, CSA, FM, CE |
