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Rosemount 644 RAI1Q4EL - 2-Wire Vibration Transmitter | Emerson
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Product Details:
Payment & Shipping Terms:
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Detailed Product Description
| Frequency Range (gPEAK): | 4.5 KHz To 10 KHz | Electrical Connection: | 1/2-14 NPT Conduit Connection |
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| Mechanical Connection: | 1/4-28 UNF Stud | Housing Rating: | NEMA 4X / IP67 |
| Operating Temperature: | -40°C To 85°C (-40°F To 185°F) | Compliance: | CE, C-Tick, ATEX, IECEx |
| Highlight: | 2-wire vibration transmitter Emerson,Rosemount 644 vibration transmitter,Pepperl Fuchs safety barrier transmitter |
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Rosemount 644 RAI1Q4EL - 2-Wire Vibration Transmitter | Emerson
Product Description
Key Features
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2-Wire, Loop-Powered Design: Simplifies installation and reduces wiring costs compared to 4-wire systems.
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Dual-Parameter Output: Simultaneously provides overall vibration (Velocity) and high-frequency bearing condition (Acceleration via enveloped gPEAK).
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Robust Construction: Features a rugged, NEMA 4X / IP67 rated housing, making it suitable for harsh industrial environments.
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4-20 mA Analog Output: Ensures easy connection to most control and monitoring systems without additional hardware.
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Velocity & Acceleration Measurement: Delivers comprehensive data for both general machine health and early-stage bearing fault detection.
The Rosemount 644 RAI1Q4EL is a robust, loop-powered vibration transmitter designed for continuous monitoring of critical industrial assets. It converts mechanical vibration directly into a standardized 4-20 mA output, enabling seamless integration with existing control systems (DCS/PLC) for predictive maintenance and machinery protection.
Technical Specifications
| Model Code | Rosemount 644 RAI1Q4EL |
| Power Supply | 12 to 35 VDC (Loop Powered) |
| Output Signal | 2-Wire, 4 to 20 mA |
| Measured Parameters | Velocity & Accelaration (gPEK Enveloped) |
| Dynamic Range (Velocity) | 0 to 1.0 in/s (0 to 25.4 mm/s) |
| Frequency Range (Velocity) | 4.5 Hz to 1,000 Hz (270 to 60,000 CPM) |
About ACH
Founded in 2012, ACH is a top-tier distributor of industrial automation products, supplying genuine devices from leading brands like ABB, P+F, E&H, AB, MTL and EMERSON to emerging markets worldwide. Our mission is to provide 100% Genuine products at the most competitive prices, helping customers reduce costs and strengthen their market position.
Frequently Asked Questions
Are preferential prices available?
Long-term brand partners can get competitive product prices. At the same time, ACH controls the profit per order to 5%, providing the most competitive prices.
Are the Products Genuine OEM Units?
Yes, all products from ACH are certified genuine OEM units. We acquire our inventory through official OEM channels and trusted third-party suppliers, ensuring every item is authentic and reliable.
How will you arrange shipment?
We'll handle the shipping for you. Through our partnerships, we can secure competitive rates with major carriers like FedEx, DHL, TNT, and UPS, ensuring a smooth and cost-effective delivery.
What is the warranty of goods?
One-year Warranty.
How long is the logistics cycle of the product?
Products are divided into spot and futures, and the delivery period of different brands of products is also different. For details, please contact the ACH business manager.
Contact Details
Achievers Automation Limited
Contact Person: sales2
Send your inquiry directly to us
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