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Valves&Actuators
Rosemount 644H single-sensor temperature transmitter, head-mount form factor. New in original Emerson box. Ready to ship.
What You’re Getting
The 644H is the universal workhorse of Rosemount’s temperature transmitter line — one model handles RTDs, thermocouples, millivolt, and ohm inputs. It mounts directly inside a DIN B connection head on any standard temperature sensor assembly, keeping wiring tidy and the electronics protected. Transmitter-sensor matching (using Callendar-Van Dusen constants) improves RTD accuracy by matching the specific sensor curve rather than using a generic ideal curve. 4-20mA HART output. Compact, reliable, and found in thousands of process plants worldwide.
Key Specs
- Brand: Rosemount (Emerson)
- Model: 644HAK1J6M5
- Type: Head-mount temperature transmitter
- Input: Universal — RTD, thermocouple, mV, ohm
- Output: 4-20mA HART
- Mounting: DIN B connection head (direct sensor mount)
- Condition: 100% new, original Emerson packaging
Why Buy From Us
- Universal input: One model covers every sensor type — fewer spares to stock, simpler procurement.
- Transmitter-sensor matching: CVD constants programmed for improved RTD accuracy over generic calibration.
- Same-day dispatch: Stocked models ship within 24 hours.
- Factory-direct: All units sourced directly from Emerson, not through brokers.
