As biomass fuels like Empty Fruit Bunch (EFB) briquettes become increasingly popular for sustainable energy, accurate and maintenance-free level measurement in buffer bins and metering hoppers has become a significant challenge. These storage vessels are typically exposed to high levels of fine dust and moisture vapor, creating harsh conditions that can overwhelm traditional level sensors.
In this article, we explore why 80GHz FMCW radar level transmitters are the ideal solution for solid biomass fuel applications, especially in environments where dust and water vapor coexist.
🚧 The Challenge: EFB Briquette Storage Environment
Empty Fruit Bunch briquettes, a solid biomass fuel derived from palm oil processing waste, are increasingly used in industrial boilers. However, their storage presents two key environmental challenges:
High Dust Load: The crushing and handling of briquettes generate large amounts of airborne particulates.
Water Vapor Saturation: During storage or feeding, moisture from the fuel and surrounding heat generates continuous vapor clouds.
Traditional level detection devices, such as ultrasonic or low-frequency radar, struggle with echo loss, false readings, or sensor fouling in such environments.
📡 The Solution: 80GHz FMCW Radar Level Transmitter
✅ Key Advantages for Harsh Environments:
Narrow 3° Beam Angle: Focused signal avoids false reflections from tank walls, screws, or internal structures.
High Frequency (80GHz): Allows better penetration through dust and vapor, with minimal signal attenuation.
PTFE-Sealed Lens Antenna: Resistant to material buildup and compatible with aggressive vapors.
Air Purge Connector: Optional purge port ensures the antenna face remains clean in extreme conditions.
IP67 & Ex-proof: Designed for outdoor and industrial use, with certifications for hazardous areas.
🏗️ Application Example: Boiler Buffer Bin with Ribbon Screw
In a recent deployment, a 3–4 meter high buffer bin storing EFB briquettes was equipped with an 80GHz radar level transmitter. The tank had:
Constant exposure to warm, humid conditions (~80°C+)
A ribbon screw conveyor at the bottom
No internal mixer, but significant dust circulation from top loading
Despite these conditions, the radar sensor delivered stable and continuous level measurements, with zero manual cleaning over three months of operation.
📈 Installation & Output Features
| Feature | Description |
|---|---|
| Output Signal | 4–20mA + RS485 Modbus + Bluetooth |
| Power Supply | 24V DC, 2-wire system |
| Process Connection | DN100 SS304 flange |
| Max Temperature Rating | 200°C (process), 70°C (ambient) |
| Process Pressure | -0.1 to 1.6 MPa |
| Explosion Rating | Ex db IIC T6 Gb |
🤝 Conclusion: Designed for Real Industrial Conditions
If you’re dealing with high-dust, high-humidity biomass environments, a standard sensor simply won’t suffice. The 80GHz FMCW radar level transmitter offers a robust, accurate, and low-maintenance solution for continuous level monitoring — even in the toughest applications.
Interested in applying this technology to your project?
👉 Contact us for a tailored recommendation or quotation.