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Help CenterROSEMOUNT 644 TEMPERATURE TRANSMITTER
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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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