Rosemount 644 Temperature Transmitter

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.

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