English
Author: Site Editor Publish Time: 2025-04-02 Origin: Site
A Radar Level Transmitter is an industrial instrument that uses microwave radar technology to measure the level of liquids, slurries, or solid materials. It operates by emitting high-frequency electromagnetic waves and calculating the distance to the material’s surface based on the reflected signal, enabling non-contact, high-precision level monitoring.
Radar level transmitters are widely used in industries such as oil & gas, water treatment, food & beverage, and pharmaceuticals, particularly in harsh environments involving high temperatures, high pressure, or corrosive/volatile substances.
Radar level transmitters rely on either Time Domain Reflectometry (TDR) or Frequency Modulated Continuous Wave (FMCW) technology:
Emits Microwave Signal: The sensor sends out high-frequency electromagnetic waves (typically 5.8GHz, 24GHz, or 80GHz).
Receives Reflected Signal: The waves bounce off the material’s surface and return to the sensor.
Calculates Distance: The time difference between transmission and reception (Time of Flight, ToF) determines the level.
Since microwaves are unaffected by temperature, pressure, vapor, or dust, radar transmitters maintain exceptional accuracy even in challenging conditions.
✅ Non-Contact Measurement: No physical contact with the medium, eliminating corrosion or contamination risks.
✅ High Precision: Accuracy up to ±1mm, ideal for critical industrial applications.
✅ Strong Interference Resistance: Unaffected by foam, steam, dust, or temperature fluctuations.
✅ Wide Applicability: Measures liquids, slurries, and granular solids.
✅ Low Maintenance: No moving parts, ensuring long service life and minimal upkeep.
| Feature | Radar Level Transmitter | Ultrasonic Level Transmitter |
|---|---|---|
| Technology | Microwave Radar | Ultrasonic Sound Waves |
| Accuracy | Extremely High (±1mm) | High (±0.25% FS) |
| Environment | Unaffected by vapor/dust | Sensitive to temp/pressure |
| Media | Liquids, solids, slurries | Limited to certain liquids/solids |
| Cost | Higher | Lower |
For harsh environments (high temp, pressure, or volatile media), radar transmitters outperform ultrasonic sensors.
Frequency Selection:
26GHz: General-purpose, suitable for most liquids & solids.
80GHz: Narrow beam, ideal for small tanks or complex installations.
Process Connection: Flange, threaded, or clamp mounting (match with tank specs).
Antenna Type: Horn, rod, or parabolic antenna (material: PTFE, stainless steel, etc.).
Output Signal: 4-20mA, HART, Modbus, or PROFIBUS (compatible with control systems).
Oil & Gas: Storage tanks, reactor vessels.
Water/Wastewater: Reservoirs, sewage level control.
Food & Beverage: Hygienic measurement of syrup, milk, etc.
Pharmaceuticals: High-purity or aggressive chemical level monitoring.
Radar level transmitters offer unmatched precision, reliability, and versatility for industrial level measurement. Whether for corrosive chemicals, high-temperature oil tanks, or sanitary food processing, radar technology ensures accurate, maintenance-free operation.
Looking for a high-performance radar level transmitter? Contact us today for expert product selection and tailored solutions!
