Good focusing delivers security
To reliably detect the level in a vessel, the reflection signal from the medium must be clearly distinguishable from the noise. Two factors determine the beam angle of a radar beam – and thus its focusing – they are: the transmission frequency and the effective antenna size. If the antenna size remains the same, better focusing is achieved by
using a higher frequency.
The solution
VEGAPULS 64, the radar sensor for liquids, operates with a transmission frequency of 80 GHz, this results in a beam angle of only 3°. The radar sensor receives only distinct, definitive reflections from the product surface. This makes the measurement more accurate and reliable. By comparison: a conventional radar sensor with 26 GHz
transmission frequency and an antenna of the same size has a beam angle of approximately 10°. Due to the considerably wider signal beam, agitators, fittings or buildup on the vessel wall cause interference that can affect the measuring result.
The benefits
- Considerably easier setup and commissioning, even with complex vessel internals
- Increased measurement certainty over the entire measuring range through better focusing
- High accuracy, even when the sensor is mounted close to the tank wall
Expert tip:
For maximum measurement certainty, the largest possible antenna system should be chosen during installation. This ensures both optimal focusing and maximum signal strength.
Applications
Dissolving tank
Level measurement in a dissolving tank
The precursors for the manufacture of colour pigments are dissolved in the dissolving tank. These precursors are mainly Naphtha based, and, depending on the formulation, water and sodium hydroxide solution are added as solvents for the production of the basic pigment solution. An agitator ensures uniform mixing of substances as they are added. The level measuring system is needed to ensure reliable values that are delivered to the control system.
Reliable
Measurement is independent of the process conditions
Cost effective
Reliable, maintenance-free operation
User friendly
Simple installation from above through a small opening
Mixing tank for soft cheese production
Mixing tank for soft cheese production
In the production of soft cheeses, various types of cheese are mixed and melted in a mixing tank. The cheese collects on the walls of the tank and is scraped off again by large spatulas. To ensure efficient production of the soft cheese, reliable level measurement is required.
Reliable
Certified materials according to FDA and EC 1935/2004 regulations
Cost effective
Easy cleaning without dismantling
User friendly
Simple setup and commissioning
Aroma vessel
Level measurement in an aroma vessel
A wide variety of aromas and flavourings are used in the food industry. The containers which store these ingredients until further processing often have small dimensions and internal obstructions. They are cleaned several times a day during batch changes. Level measurement is essential for cost-effective stocking of these ingredients.
Reliable
Reliable measurement for all liquid media
Reliable measurement for all liquid media
plics® concept: short delivery time and standardized operation
User friendly
Reliable measurement even with internals
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