LCD Display 4-20mA Rosemount 644 Rail Temperature Transmitter

• Customization: Available
• After-sales Service: 1 Year
• Warranty: 1 Year
• Model NO.: temperature sensor
• Customized: Non-Customized
• Certification: CE, ISO
• IP Rating: IP68
• Screen Size: 3"
• SD Card Memory Size: 32G
• Measuring Medium: Temperature
• Type: Paperless Logger
• Transport Package: Temperature Sensor
• Specification: temperature sensor
• Trademark: Rosemounee
• Origin: China

Product Description

Measurement Input	RTD (Pt100), Thermocouple (J, K, T, etc.), mV, Ohm
Accuracy	±0.15°C (±0.27°F) for RTD input; ±0.03% of span for analog output
Stability	±0.1% of reading or ±0.1°C (whichever is greater) over 12 months
Output Signal	4-20 mA with HART® protocol; FOUNDATION™ Fieldbus (optional)
Environmental Impact	Ambient temperature effect: 0.003°C/°C (RTD)
Certifications	SIL3 compliance (IEC 61508); Hazardous area certifications (ATEX, IECEx)
Display & Interface	Optional LCD with diagnostics; HART 375/475 handheld or PC-based AMS compatibility
Power Supply	12-42 V DC (standard); 10.5-45 V DC (extended range)
Process Connection	Dual-compartment housing for harsh environments; WAGO spring-clamp terminals
Communication Protocols	HART 7, FOUNDATION Fieldbus, WirelessHART (model-specific)
Long-term Performance	10-year stability guarantee (model-specific); drift-resistant calibration design

Rosemounee 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.

Q:How long will you reply me?
A:We will contact you as soon as possible but within 12 hours
Q: Can I get some samples?
A: Yes, Sample order is available for quality check and market test. But you have to pay the express cost.
Q: How soon can you arrange your production?
A: Once getting your product confirmation and receiving the prepayment, the production will be started immediately.
Q: What's delivery time?
A: It usually takes about 3-5 working days for small order and 10-15 days for big order.
Q:How do you control your quality ?
A: Three inspection steps(of original, production, and finished goods) + good warranty service(1 year free to change a new one without any human damage factors).
Q: What certificates do you have ?
A:ISO9000, CE, Explosion-proof certification, RoHs ready. And before the delievry of goods, quality and safety inspection
certification issued by third parts also can be offered.
Q:Could I visit your factory?
A:Very welcome! Fly to Xian Yang air port. It was a big pleasure for us.
Q: What's your warranty terms?
A: We offer 12 months warranty time.
Q:Can you provide OEM & Customized service?
A:Yes, OEM and ODM are both available, we have the professional R&D dept which can provide professional solutions for you.