Product Description:
Engineered for versatility, the Rosemount 644 Temperature Transmitter is available with HART®, FOUNDATION™ Fieldbus or PROFIBUS® protocols in head, field or rail mount styles and a variety of enclosure options. By adding a Local Operator Interface (LOI), you can update your transmitter configuration in the field without tools. For diverse application requirements, this transmitter includes diagnostic capabilities, such as Hot Backup™ capability, sensor drift alert and thermocouple degradation.
Specifications:
Accuracy | ±0.10°C (±0.18°F) |
Stability | 5-year stability |
Warranty | 12/18 months, 3-year or 5-year limited warranty options |
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 or LCD Display with Local Operator Interface (LOI) |
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 |
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