English
Author: Site Editor Publish Time: 2025-08-18 Origin: Site
Introduction
Radar level transmitters are widely adopted in process industries for their contactless measurement and high accuracy. This article explains their operating principles and industrial use cases.
1. Working Principle
Radar transmitters emit high-frequency electromagnetic waves (6GHz/26GHz) via an antenna. The reflected signal from the material surface is analyzed using Time-of-Flight (ToF) or Frequency-Modulated Continuous Wave (FMCW) technology to calculate level height. Key advantages:
No physical contact, eliminating contamination risks
Unaffected by temperature, pressure, or vapor
Suitable for corrosive/high-viscosity media
2. Major Applications
Oil Storage Tanks: Accurate crude oil/diesel measurement with explosion-proof designs.
Chemical Plants: Resistant to harsh acids/alkalis (e.g., sulfuric acid tanks).
Wastewater Treatment: Continuous monitoring in sewage pools or reservoirs.
Food & Pharma: Hygienic radar models for FDA-compliant operations (e.g., syrup tanks).
Conclusion
As a critical Industry 4.0 sensor, radar level transmitters ensure reliable process control. Selection criteria include dielectric constant, temperature range, and tank geometry.
