Rosemount 644 Series Temperature Transmitter with Hart | 644HAK6J6M5
Rosemount 644HAK6J6M5 is a high-accuracy 4-20mA temperature transmitter designed for industrial process applications. Features universal input capability for RTDs, thermocouples, and resistance inputs with HART communication protocol.
The Rosemount 644HAK6J6M5 temperature transmitter delivers reliable and accurate temperature measurement for demanding industrial applications. This universal input transmitter accepts RTD, thermocouple, and resistance inputs, providing exceptional flexibility for various process temperature monitoring requirements.
Engineered with advanced microprocessor technology, this transmitter offers superior performance with high accuracy and stability over extended operating periods. The integrated HART communication protocol enables remote configuration, diagnostics, and calibration, reducing maintenance time and costs while improving operational efficiency.
Availability
In stock
This part is in stock at Z Power Electric and ships from our Calimesa, California warehouse.
Catalog pricing
Add this item to your cart or contact Z Power Electric for quantity pricing, lead-time support, and backorder recovery.
- 30-day returnsOn standard orders
- 24-hour quoteFrom our sourcing team
Quick facts
- Brand
- Rosemount
- Part number
- 644HAK6J6M5
- Condition
- New
- Category
- Sensors & Instrumentation
Product tags
Product overview
Built to withstand harsh industrial environments, the 644 Series features robust construction with excellent EMC immunity and vibration resistance. The transmitter's smart diagnostics capabilities provide early detection of potential issues, helping to prevent unplanned downtime and optimize process control performance.
Ideal for applications in oil and gas, chemical processing, power generation, and manufacturing industries where precise temperature measurement and reliable communication are critical for safe and efficient operations.
Specifications
- Input Types
- RTD, Thermocouple, Resistance
- Output Signal
- 4-20mA with HART
- Accuracy
- ±0.1°C (verify)
- Operating Temperature
- -40°C to 85°C (approximately)
- Power Supply
- Loop powered
- Communication
- HART Protocol
- Housing
- Explosion-proof rated (verify specific certifications)
- Mounting
- DIN rail or panel mount
- Response Time
- <1 second (approximately)
- Display
- LCD (verify if included)
Key features
- Universal input for RTDs, thermocouples, and resistance inputs
- HART communication protocol for remote configuration and diagnostics
- High accuracy and long-term stability
- Smart diagnostics for predictive maintenance
- Robust construction for harsh industrial environments
- 4-20mA analog output with digital overlay
Part number breakdown
644 - Series designation for temperature transmitters
H - HART communication protocol
A - Accuracy class designation
K - Housing/mounting configuration
6 - Input type specification
J - Output range/scaling option
6 - Additional feature code
M5 - Regional/certification code
Why buy from Z Power Electric
- Independent Sourcing — We source through independent channels to find parts others can't.
- Quality Assurance — Every part is inspected and verified before shipping.
- Fast Response — 24-hour quote turnaround on most requests.
- Global Reach — Serving maintenance teams and procurement managers worldwide.
Not what you're looking for? We source alternates, discontinued parts, and backordered inventory for urgent maintenance needs.
Request a quoteQuestions about this part
Where can I buy the Rosemount 644HAK6J6M5?
This part is in stock at Z Power Electric and ships from our Calimesa, California warehouse. Z Power Electric is an independent MRO supplier in Calimesa, California — we buy outside authorized distribution, which is why we can quote parts that a standard distributor shows as unavailable.
Is the Rosemount 644HAK6J6M5 discontinued or obsolete?
Manufacturer lifecycle status changes by part number and region, so we confirm it per quote rather than publishing a claim that may be out of date. Either way it does not change what we do: we source discontinued, obsolete, and backordered parts as a matter of course, and the quote states whether we located the original or are proposing an equivalent.
How long does it take to get a quote on the Rosemount 644HAK6J6M5?
We respond to every sourcing request within 24 hours, and the quote states a confirmed ship date rather than an estimate. Mark the request urgent if the part is holding up a line.
Is Z Power Electric an authorized Rosemount distributor?
No — and that is the point. Z Power Electric is an independent supplier, so we are not limited to Rosemount's authorized channel or its order book. We source through surplus, new-old-stock, and independent inventory, and we state the condition and source channel of every unit on the quote.
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