FMCW radar level transmitter 80G

for solidsfor liquidsfor corrosive liquids

Working Principle The transmitter emits extremely narrow microwave pulses through a high‑frequency lens antenna. The time interval between emission and reception is directly proportional to the distance to the medium surface. An advanced microprocessor calculates the precise distance and converts it into level height. The 80G series uses Frequency Modulated Continuous Wave (FMCW) technology: emitting continuous waves with linearly varying frequency. The difference between the reflected echo and the emitted signal is processed via Fast Fourier Transform (FFT) to achieve high‑resolution ranging, suppress false echoes and ensure measurement continuity and accuracy.

Key Features

• Ultra‑high operating frequency – 80 GHz (76–81 GHz); extremely narrow beam angle (as low as 3°) concentrates energy to reduce false echoes from vessel walls, agitators, ladders and internal structures; shorter wavelength (~3.75 mm) improves reflection on solids, small granules and low‑dielectric media.
• Extreme temperature resistance – process temperature range −40°C to +1100°C (ceramic‑sealed antenna models); ceramic antenna options (alumina/corundum or silicon carbide) with melting point >2000°C; multi‑stage composite heat dissipation ensures stable operation under intense thermal radiation.
• High precision & reliability – measurement accuracy ±1 mm; blind zone as low as 6–10 cm; smart echo processing (EchoDiscovery) automatically filters interference from steam, foam, condensation and dust.
• Strong anti‑interference & penetration – unaffected by temperature, pressure, steam, dust or vibrations; 5 GHz instantaneous bandwidth ensures high resolution and improved penetration through thick quartz or glass windows.
• Compact & flexible installation – compact antenna for small‑diameter flanges or confined spaces; process connections: threaded (G1½, 1½ NPT) or flanged (≥DN50/2"); process pressure rating: −0.5 to 3 MPa (up to 16 MPa for selected models).
• Low maintenance & long service life – non‑contact measurement with no moving parts, no wear and no media contamination; maintenance‑free operation reduces downtime and total cost of ownership.
• Advanced connectivity & digitalization – outputs: 4–20 mA/HART (two‑wire or four‑wire), RS485/Modbus RTU; Bluetooth for wireless configuration and remote commissioning via mobile app; compatible with SCADA, DCS and IoT platforms.
• Safety certifications – explosion protection: Ex db IIC T6 Gb, Ex ia IIC T6 Ga, Ex tb IIIC, Ex ia IIIC; ingress protection: IP66/IP67/IP68; compliant with ATEX, IECEx and other international standards.

Technical Specifications

• Operating frequency: 76–81 GHz (80 GHz typical)
• Measuring range: 0–120 m (options: 0–30/60/80 m)
• Accuracy: ±1 mm
• Blind zone: 6–10 cm
• Beam angle: ≥3° (as low as 3°)
• Process temperature range: −40°C to +1100°C (ultra‑high temperature model)
• Ambient temperature range: −40°C to +70°C
• Process pressure range: −0.5 to 3 MPa (up to 16 MPa for selected models)
• Power supply: 24 V DC (two‑wire / four‑wire) or 220 V AC
• Output signals: 4–20 mA/HART (two‑wire / four‑wire), RS485/Modbus RTU
• Process connection: Thread (G1½, 1½ NPT) / Flange (≥DN50/2")
• Antenna type: Lens antenna / Ceramic‑sealed high‑temperature antenna
• Antenna material: PTFE / PFA / Ceramic (alumina/corundum / SiC) / 316L stainless steel
• Enclosure material: Aluminum (single‑chamber / dual‑chamber) / Stainless steel
• Ingress protection: IP66 / IP67 / IP68
• Explosion protection: Ex db IIC T6 Gb, Ex ia IIC T6 Ga, Ex tb IIIC, Ex ia IIIC
• Communication protocols: HART, RS485/Modbus, Bluetooth
• Minimum dielectric constant: ≥1.5
• Display: LCD backlit display with keypad (optional)

Applications

• Metallurgy & steelmaking: steel ladle level monitoring; molten steel, aluminum, copper; blast furnace burden level; slag and converter vessels; tundish; crucibles and launder systems; continuous casting molds.
• High‑temperature slurry & ore: rotary kilns, coke ovens, cement kilns, sintering machines and high‑temperature ore bunkers/conveyors.
• Petrochemical & chemical: high‑temperature/high‑pressure reactors, coking units, coal tar tanks, asphalt storage and delayed coking units.
• Power generation: boiler drums, desulfurization towers, ash hoppers and fuel oil tanks.
• Metallurgical & mineral processing: sinter plants, pelletizing plants, blast furnace coke and ore bins, high‑temperature bunkers.
• Special applications: high‑temperature acid/alkali media, high‑vacuum vessels, processes with thick steam, heavy dust or strong crystal adhesion.

Why Choose the 80G Ultra‑High Temperature Radar Level Transmitter?

• Designed for extreme heat – ceramic‑sealed antenna and multi‑stage heat dissipation allow operation up to 1100°C.
• Non‑contact, maintenance‑free measurement – no moving parts, no wear and no media contamination.
• Reliable in harsh environments – 80 GHz signal penetrates heavy steam, dust and crusted buildup.
• High precision and focused beam – ±1 mm accuracy with ultra‑narrow beam angle to minimize false echoes.
• Easy installation and commissioning – compact antenna design and Bluetooth wireless configuration for remote setup.
• Industry connectivity – supports HART, RS485/Modbus and Bluetooth for SCADA/DCS/IoT integration.