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Rosemount™ 5408 Radar Level Transmitter Product Overview
1. Introduction
The Rosemount™ 5408 is a cutting-edge non-contacting radar level transmitter engineered for liquid and bulk solids applications. Utilizing Frequency-Modulated Continuous Wave (FMCW) technology, it delivers unparalleled reliability and precision in challenging industrial environments. Designed with a focus on energy efficiency and safety compliance, the 5408 series is optimized for industries such as oil and gas, chemical processing, water treatment, and food production
Key innovations include:
Two-wire FMCW radar for robust signal strength and minimal power consumption.
Self-powered operation (up to 2 seconds) to ensure continuity during power fluctuations.
Compliance with IEC 61508 (SIL 2/SIL 3) for safety-critical applications via the 5408:SIS variant.
2. Core Technology & Measurement Principle
2.1 FMCW Radar Operation
The 5408 employs 26 GHz FMCW radar to generate a continuous sweep of microwave signals. Key parameters include:
Frequency Range: 24.05-27.0 GHz (TLPR) / 24.05-26.5 GHz (LPR)
Output Power: 0.32 mW (-5 dBm)
Beam Angle: Narrow beam design to avoid obstructions, ideal for silos and reactors.
The device calculates level by analyzing the frequency differential between transmitted and reflected signals, ensuring accuracy even with turbulent surfaces, foam, or condensation.
2.2 Enhanced Signal Robustness
30x stronger signal compared to traditional radar, enabling reliable performance in low-dielectric media (εr ≥ 1.4).
Adaptive algorithms for solids measurement, handling rapid level changes in bulk materials.
3. Key Features & Advantages
3.1 Performance Specifications
Accuracy:
Standard: ±2 mm (±0.08 in).
Ultra-accurate mode: ±1 mm (±0.04 in).
Measurement Range: Up to 40 m (131 ft) for liquids; 25 m (82 ft) in 5408:SIS safety mode.
Environmental Resilience:
Temperature: -60°C to +250°C (-76°F to +482°F).
Pressure: 100 bar (1450 psi).
3.2 Safety & Compliance
Explosion Protection:
ATEX, IECEx, FM, and CSA certifications for hazardous areas (Class I/II/III, Zone 0/1/21)
XP/DIP ratings for dust and gas environments
Functional Safety:
5408:SIS variant certified for SIL 2/3 applications (IEC 61508), supporting overfill prevention and leak detection.
TÜV-tested spill protection and WHG compliance.
3.3 User-Centric Design
Intuitive Interface: Graphical wizards for setup, diagnostics, and proof testing.
Smart Diagnostics Suite:
Early warnings for antenna fouling, power issues, or abnormal surface conditions.
Local memory stores 7 days of echo profiles and alarms.
Maintenance-Free Design: PTFE seals eliminate O-rings, reducing part replacement
| Parameter | Details |
| Technology | Two-wire FMCW (Frequency Modulated Continuous Wave) radar |
| Frequency | 26 GHz |
| Measurement Range | - Standard: 131 ft (40 m) - Safety mode (5408:SIS): 82 ft (25 m) |
| Accuracy | - Standard: ±0.08 in. (±2 mm) - Ultra accuracy: ±0.04 in. (±1 mm) |
| Operating Pressure | Up to 1450 psi (100 bar) |
| Operating Temperature | -76°F to +482°F (-60°C to +250°C) |
| Power Supply | - 4-20 mA HART®: 12-42.4 VDC - Foundation™ Fieldbus: 9-32 VDC |
| Communication Protocols | HART®, Foundation™ Fieldbus |
| Certifications | ATEX, IECEx, FM, CSA, 3-A, CRN, IEC 61508 (SIL 2/SIL 3 for 5408:SIS) |
| Antenna Types | Conical antenna, process seal antenna, parabolic antenna |
| Diagnostics | Smart Diagnostics Suite (antenna buildup alerts, power monitoring, surface condition analysis) |
| Safety Features | - SIL 2/SIL 3 compliance (5408:SIS) - Remote proof testing without process interruption |
| Warranty | Up to 10-year limited warranty |
4. Application Scenarios
4.1 Liquid Applications
Reactors & Mixers: Performs reliably under agitation, high pressure, and foam.
Storage Tanks: Compatible with metallic/non-metallic vessels (oil, chemicals, condensate).
Open Atmospherics: Ponds, dams, and sumps using LPR (Open Air) mode
4.2 Solids & Challenging Media
Bulk Silos: Narrow beam avoids obstacles in small-to-medium silos.
Abrasive/Sticky Materials: Process-seal antennas for corrosive or viscous substances.
4.3 Safety-Critical Systems
Overfill Prevention: 5408:SIS supports remote proof testing without process interruption.
Leak Detection: SIL 3-capable for refinery and chemical plant safety loops.
5. Certifications & Regulatory Compliance
North America:
FCC Part 15 Class B (K8C5408L/TLPR)
NEC/CEC for hazardous area installations
Europe:
RED 2014/53/EU (ETSI EN 302372/729)
CE Marking with EU Declaration of Conformity
Global Standards:
3-A Sanitary for food/pharmaceutical use.
CRN registration for pressure vessels.
6. Installation & Configuration
6.1 Antenna Options
Cone Antenna: General-purpose for liquids.
Parabolic Antenna: Long-range focus (40 m).
Process Seal Antenna: For condensation-heavy or aggressive media.
6.2 Wiring & Power
Power Supply:
HART/4-20 mA: 12-42.4 VDC (IS: 12-30 VDC).
FOUNDATION Fieldbus: 9-32 VDC.
Communication Protocols:
HART 7, FOUNDATION Fieldbus, and Bluetooth® for wireless configuration.
6.3 Mounting Guidelines
LPR (Open Air): Minimum 4 km from radio astronomy sites; antenna height ≤15 m within 40 km
TLPR (Tank): Requires fully enclosed metallic/concrete structures to contain RF emissions
7. Maintenance & Support
Diagnostic Tools:
Signal Quality Metrics for proactive maintenance.
Smart Meter Verification for calibration checks.
Warranty: Up to 10 years with extended service plans.
Asset Management: QR code tags link to MyEmerson portal for real-time documentation.
8. Conclusion
The Rosemount™ 5408 redefines radar level measurement with precision, safety, and ease of use. Its adaptability across industries-from corrosive chemical tanks to hygienic food storage-makes it a versatile solution for modern industrial automation. For detailed certifications, configuration tools, or region-specific compliance, refer to Emerson's official resources
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Company Achievements
KeRui (Weifang) Automation Equipment Co. Ltd. Has maintained a cooperatve relationship with Rosemount for 15 years, and our purchase quantity has reached 20,000 units. We supplied the tuning fork level gauge to the Rosemount factory and have been well received by the Beijing factory. We have cooperated with Yokowaga and maintained a cooperative relationship for 8 years, and our purchase quality has reached 7000 units. The companies we have cooperated with: 1. Awarded "Outstanding Supplier by Yanchang Petroleum in 2008 2. In December 2012, our company was awarded the "Excellent Equipment Service Award" for the expansion project of units 6 and 7 of the Guangdong Guohua Yuedaishan Power Plant 3. Awarded "Outstanding Supplier by Yaxing Group in 2013 4.200 transmitters for Haihua Group's ethylene debottlenecking transformation project in 2015. 5. In 2018, we were rewarded as a National Nuclear Power Instrumentation Industry Measurement and Testing Alliance member. 6.160 transmitters and 20 electric autuators for the Shandong Laigang Yongfeng Steel expansion project in 2019 7.In 2022, Jinneng Chemical (Qingdao) Co., Led/ Jinneng 2x450,000 tons/ year high-performance polypropylene project (newly built) equipped 460 transmitters from our company. 8. In 2022, Shandong Qinghe Chemical Technology Co., Ltd.s hydrogen peroxide method epoxy propane device and supporting hydrogen peroxide device expansion project used 253 pressure transmitters. 9.In 2022, the Wanhua Chemical HTN project NPG installed 320 transmitters and 50 sets of valve positioners. |
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