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.
- Transmitter Type and Measurement Configuration : H : DIN A Head Mount - Single Sensor Input
- Transmitter Output : A : 4-20 mA with digital signal based on HART protocol
- Product Certifications : K5 : USA Explosion-proof; Non-incendive; Dust Ignition-proof
- Enclosure Options | Material | Conduit Entry Size : J6 : Universal Head (Junction Box) with 50.8mm (2-in) SST pipe bracket | Aluminum | 1/2-14 NPT
- M5 : LCD Display
- Line Filter : F6 : 60 Hz Line Voltage Filter
- Extremely versatile temperature transmitter available in HART, FOUNDATION Fieldbus or PROFIBUS protocols
- Diverse mounting configurations including head, field or rail mount with many enclosure options
- LOI option eliminates the need for special configuration tools (i.e. field communicator) for ease-of-use
- Transmitter-sensor matching with Callendar-Van Dusen constants reduces total measurement error
- Hot Backup capability and sensor drift alert with dual sensors ensure measurement integrity
- Thermocouple degradation diagnostic monitors thermocouple health to detect degradation before failure
- Minimum and maximum temperature tracking observes temperature extremes for easy troubleshooting
- Device dashboards provide easy interface for simplified device configuration and diagnostic troubleshooting
