In the field of level measurement technology, radar level transmitters have become essential equipment across various industries. Among them, 26GHz and 80GHz radar level transmitters are frequently compared due to their different technical characteristics and application scenarios. This article systematically compares the two types of radar level measurement devices in terms of working principles, performance, environments, and typical use cases—helping users choose the most suitable solution.
Shared Features of 26GHz and 80GHz Radar Level Transmitters
Non-Contact Measurement: Both use a non-contact design, preventing medium corrosion or buildup from affecting the sensor, thereby extending service life.
Wide Medium Compatibility: Applicable to liquids, solids, powders, and other types of materials.
Excellent Anti-Interference Capability: Both can operate in harsh environments with dust, steam, and temperature fluctuations.
Featured Product: Jiwei JWRada Series 80GHz Radar Level Transmitter
Key Differences Between 26GHz and 80GHz Radar Level Sensors
1. Frequency and Wavelength
26GHz Radar Level Transmitter: Operates at a lower frequency with a longer wavelength (~11mm, centimeter wave). It has strong penetration, making it ideal for dusty or high-steam environments.
80GHz Radar Level Transmitter: Uses high-frequency millimeter waves (~3.75mm). Its shorter wavelength offers higher resolution, making it suitable for high-precision level measurement and complex process conditions.
2. Measurement Accuracy and Resolution
26GHz Radar Transmitter: Offers reliable performance with longer measuring ranges (up to 70 meters or more). While suitable for large tanks and open reservoirs, its resolution is lower than 80GHz and may struggle with fine or small targets.
80GHz Radar Transmitter: Delivers exceptional precision, with an accuracy of ±1 to ±3 mm and display resolution up to 1 mm. Perfect for small targets, low-dielectric materials, and applications requiring high measurement accuracy.
80GHz radar sensors are ideal for small tanks and complex level measurement tasks
3. Beam Angle and Dead Zone
26GHz: Has a wider beam angle (~20°), suitable for large tanks. It provides better penetration through steam and dust but with a larger blind zone. It’s less sensitive to foam, temperature, and pressure fluctuations.
80GHz: Features a narrow beam angle (2°–4°) with focused energy, offering clearer echo signals. The smaller dead zone (often under 4m) enables use in compact tanks and precision measurement scenarios. The integrated lens antenna design enhances stability and longevity.
4. Installation Flexibility and Interference Resistance
26GHz Advantages:
Strong resistance to dust and vapor
Easier installation and good adaptability to tank structures
80GHz Advantages:
Focused beam avoids obstacles and minimizes interference
Requires careful alignment but delivers superior accuracy
80GHz radar’s narrow beam allows better control in precision level monitoring
5. Application Scenarios
26GHz Radar Level Transmitter:
Best for bulk solids (e.g., coal, cement) and liquids (e.g., chemical tanks)
Performs well in high-temperature, high-pressure, and corrosive environments
Ideal for measuring large tanks, reservoirs, and industrial storage applications
Resistant to vapor and dust, ideal for rugged environments
80GHz Radar Level Transmitter:
Preferred for high-precision tasks in industries like petrochemical, food processing, and pharmaceuticals
Suitable for deep wells, compact vessels, and low-dielectric materials
Commonly used in water treatment, energy, boiler monitoring, and pulp and paper industries
Delivers better performance in low-dust environments
Summary: How to Choose the Right Radar Level Transmitter?
Selection Criteria
Recommended Frequency
High measurement accuracy
80GHz
High dust/steam environment
26GHz
Limited installation space
80GHz
Long measurement range
26GHz
Liquid or powder medium
Both applicable
Cost-sensitive projects
26GHz
If your application demands high accuracy level measurement, especially in lithium battery manufacturing, pharmaceutical, or food-grade environments, an 80GHz radar level transmitter is the optimal choice. On the other hand, in dusty, high-pressure, or high-temperature environments, the 26GHz solution offers better stability and environmental adaptability.
Learn More About Jiwei JWRada Radar Level Transmitters
Jiwei offers the full range of radar level transmitters—serving industries such as petrochemical, environmental, energy, and water treatment. With support for various output protocols and compliance with industrial safety standards, JWRada series enables smart, reliable level control across demanding applications.
📞 Need expert selection advice or technical support? Contact our professional team today!
