VEGAPULS 21 Compact radar sensor for continuous level measurement

Selection Notes

• Confirm the measurement range requirement; UP56 supports distances up to 20 m. 
• Verify whether your application requires bulk solids or liquid level measurement.
• Choose the appropriate process connection size and thread (G1½, 1½ NPT, R1½). 
• Determine the desired output interface, such as 4–20 mA/HART.
• In addition, ensure the housing protection rating (IP66/IP67, Type 4X) meets your environment needs.

Why Choose the VEGA VEGAPULS 21

• Non‑Contact Ultrasonic 80 GHz Radar
The sensor uses high‑frequency radar pulses that measure level without contacting the medium. As a result, maintenance needs are reduced. [turn0search2])

• High Accuracy and Reliability
With typical accuracy around ±2 mm, the VEGAPULS 21 delivers exact measurement results that remain stable regardless of medium properties or conditions.

• Wide Application Flexibility
It is suitable for liquids and small bulk solids in water treatment, storage tanks, process vessels and plastic containers. Therefore, a broad range of simple industrial level tasks can be covered with one device.

• Robust Industrial Design
The plastic housing and total protection rating of IP66/IP67, Type 4X help ensure durability in wet and dusty industrial environments.

• Easy Integration
Featuring a standard 4–20 mA/HART output, the sensor can interface easily with PLC, DCS or other process automation systems. Consequently, system integration and setup are simplified.

FAQ

Q: What measuring principle does the VEGAPULS 21 use?
A: It uses 80 GHz radar technology for non‑contact continuous level measurement. The sensor emits radar signals and receives echoes to determine level.

Q: What types of media can it measure?
A: The sensor is suitable for liquids and bulk solids in standard industrial applications. It works well with water, chemicals, additives, slurry and more.

Q: What output signals are supported?
A: VEGAPULS 21 supports 4–20 mA/HART output for integration with automation systems.

Q: What protection and approvals does the device have?
A: It has a plastic housing with IP66/IP67, Type 4X, and optional worldwide approvals for hazardous areas and hygienic applications.