Radar Level Transmitter
The Radar Level Transmitter is a non-contact type 80 GHz FMCW device designed for continuous level measurement of liquids and solids. It offers high accuracy, reliable performance and can be used in water, wastewater, chemical, food, oil, and highly corrosive or dusty media applications.
With its narrow beam angle and advanced signal processing, it ensures stable measurements even in challenging environments. The transmitter supports outputs like 4–20 mA, HART and MODBUS, making it suitable for integration with PLC, DCS or Level Indicators.
Product Share on :Applications
- Water & wastewater
- Effluent & sewage
- Acids, alkalis & chemicals
- Vegetable oils & water-based paints
- Dam & reservoir water
- Ash slurry, fly ash, cement & granules
- Gravels, grains, plastic pellets
- Lime, flakes, coal, sand, ores
Construction & Working
The transmitter emits an 80 GHz RF signal toward the media surface. The reflected signal is received back by the sensor, and the frequency difference between transmitted and received waves is processed to calculate the level. The electronics convert this into a 4–20 mA or RS-485 MODBUS/HART output for monitoring or control.
Key Features
- Easy installation & retrofit on existing tanks
- Very small beam angle
- High temperature handling up to 500°C
- Measuring range up to 60 meters
- Reliable & accurate 80 GHz FMCW signal performance
Technical Specifications
| Level Transmitter Type | Radar Level Transmitter |
|---|---|
| Frequency | 76–81 GHz (5 GHz FMCW) |
| Accuracy | ±2 mm |
| Beam Angle | 3° & 8° |
| Measuring Range | 0.1–10 m / 0.25–30 m / 0.6–60 m |
| Minimum Dielectric Constant | ≥ 2 |
| Power Supply | 18–28 VDC (< 1W) |
| Communication | MODBUS / HART |
| Signal Output | 4–20 mA or RS-485 |
| Operation Display | 128×64 Dot Matrix, 4 Buttons |
| Enclosure | Aluminium Alloy – Weatherproof / Flameproof |
| Antenna Type | Lens / Anti-corrosive / Quartz-isolated flange |
| Process Temperature | -20°C to 500°C |
| Process Pressure | -1 to 20 Bar |
| Cable Entry | M20×1.5 or ½” NPT |
| Recommended Cable | AWG 18 or 0.75 mm² |
| Protection Class | IP66 |
| Explosion Proof Grade | Ex db – Gas Group IIC, EPL Gb & Db |
| Process Connection | Threaded / Flanged |
Model Identification
- RLT – Base Model
- 1. Measuring Range: 1 – 0.1–10 m, 3 – 0.25–30 m, 6 – 0.6–60 m
- 2. Media Type: L – Liquid, S – Solid, P – Powder
- 3. Enclosure: W – Weatherproof, F – Flameproof
- 4. Process Connection Size: A – 1½”, B – 2”, C – 2½”, D – 3”, O – Other
- 5. Process Connection Type: 1 – ASME 150# Flange, 2 – BSP(M) Screwed, O – Other
- 6. Process Connection MOC: H – CS, I – SS304, J – SS316, K – PP, O – Other
- 7. Temperature Range: 1 – (-20 to 70°C), 2 – (-20 to 120°C), 3 – (-20 to 200°C), 4 – (-20 to 500°C)
- 8. Output: T – Two-wire (4–20 mA), M – MODBUS, H – HART
- 9. Cable Entry: M – M20×1.5, N – ½” NPT
