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Rosemount 644 Temperature Transmitters

The Rosemount 644 Temperature Transmitter is available with FOUNDATION™ Fieldbus or PROFIBUS® protocols in head, HART®, field or rail mount styles, and diverse enclosure options. The transmitter configuration can be easily updated by adding a Local Operator Interface (LOI). This transmitter meets diverse application requirements through its advanced diagnostic capabilities such as sensor drift alert, thermocouple degradation, and Hot Backup™ capability.

Availability: In stock
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Complete Model Number

Specification

Rosemount 644 Temperature Transmitters

Input

Dual and single sensor capability with universal sensor inputs (RTD, T/C, mV, ohms)

Accuracy

±0.10°C (±0.18°F)

Output

4-20 mA with digital signal based on HART Protocol

FOUNDATION™ fieldbus protocol, PROFIBUS® PA protocol

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

Ohms

Housing

Field mount, DIN A head mount or rail mount

Features

Resources

Technical Data-Sheet

644

644_min.pdf

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Technical Data-Sheet

644

644_min.pdf

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