VEGAPULS C 21 Product Overview
VEGAPULS C 21 is a compact 80GHz radar level transmitter launched by VEGA, specifically designed for continuous level measurement of liquids and solid bulk materials. The instrument uses a non-contact measurement principle and is suitable for various industrial process scenarios, including water treatment, chemical, food and beverage, and environmental protection industries. Its compact structure and flexible installation make it an ideal choice for level measurement in small and medium-sized storage tanks and process vessels.
Download VEGAPULS C 21 Chinese Manual.pdf
Working Principle and Technical Features
80GHz High-Frequency Radar Technology
VEGAPULS C 21 uses 80GHz high-frequency radar waves for measurement, with an extremely narrow beam angle of only 8°, which can effectively avoid interference sources such as obstacles and agitators inside the tank. Compared with traditional 26GHz radar, 80GHz technology has higher measurement accuracy and stronger anti-interference ability, especially suitable for small-sized storage tanks and complex working conditions.
Core Advantages
- Non-contact measurement: No direct contact with the medium, avoiding corrosion and contamination issues.
- High precision: Measurement accuracy up to ±2mm, meeting most industrial process requirements.
- Wide range: Maximum measurement range up to 15 meters, adapting to various tank heights.
- Easy installation: Compact design, supporting multiple process connection methods.
- Anti-condensation: Built-in anti-condensation design, suitable for humid environments.
Technical Parameters Overview
| Parameter | Specification |
|---|---|
| Measurement principle | 80GHz frequency modulated continuous wave radar |
| Measurement range | 0~15 meters |
| Measurement accuracy | ±2mm |
| Beam angle | 8° |
| Process temperature | -40~+80°C |
| Process pressure | -1~+3bar |
| Output signal | 4~20mA/HART |
| Protection class | IP66/IP67 |
| Process connection | G1½, 1½NPT, etc. |
Installation and Commissioning Points
Installation Steps
- Confirm that the tank flange or threaded interface matches the instrument process connection.
- Install the instrument vertically on the tank top, ensuring the radar beam avoids the feed inlet and agitator.
- For solid level measurement, it is recommended to add an aiming flange to adjust the beam direction.
- Tighten the process connection to ensure good sealing and prevent leakage.
- Connect the power supply and set parameters via HART handheld communicator or VEGA dedicated software.
Commissioning Precautions
- Perform false echo suppression when the tank is empty to eliminate fixed interference inside the tank.
- Set an appropriate dielectric constant to ensure measurement stability.
- For low dielectric constant media, it is recommended to use a stilling well or bypass pipe installation.
Selection and Application Scenarios
Typical Applications
- Water treatment: Level measurement of sewage tanks, clean water tanks, and dosing tanks.
- Chemical: Level monitoring of acid and alkali storage tanks and reactors.
- Food and beverage: Level measurement of syrup, edible oil, and fermentation tanks.
- Environmental protection: Level detection of solid-liquid mixtures such as slurry, sludge, and lime slurry.
Selection Recommendations
When selecting VEGAPULS C 21, it is necessary to confirm process temperature, pressure, medium characteristics, and output signal requirements. For high-temperature or high-pressure conditions, it is recommended to choose other VEGA series products. If explosion-proof certification is required, please select the corresponding explosion-proof model.
Summary
With 80GHz high-frequency radar technology, compact design, and excellent anti-interference ability, VEGAPULS C 21 has become a cost-effective choice in the field of industrial level measurement. Its non-contact measurement method and high-precision characteristics can significantly improve the reliability of process control. Engineering technicians and procurement personnel can quickly complete instrument selection and deployment based on actual working conditions, combined with the parameters and selection recommendations in this article.