VEGACAP 27 Product Overview
VEGACAP 27 is a capacitive level switch launched by the German company VEGA, mainly used for point level detection of solid particles and liquids. The instrument is based on the capacitive measurement principle and determines whether the material has reached the set position by changes in capacitance between the probe and the vessel wall.
VEGACAP 27 has a compact structure and is easy to install. It is widely used in silos, storage tanks, and pipelines in the chemical, building materials, food, environmental protection, and other industries. Its output is a relay or transistor signal, which can be directly connected to a PLC or control system.
VEGACAP 27 Working Principle
The core of a capacitive level switch is capacitance change detection. The probe serves as one plate of the capacitor, and the vessel wall serves as the other plate. When the material covers the probe, the dielectric constant changes, thereby causing the capacitance value to change.
Capacitance Detection Process
- The instrument's internal oscillator generates a high-frequency signal, which is applied to the probe.
- The probe and the vessel wall form a capacitor, and the capacitance value changes with the material coverage state.
- When the capacitance value exceeds the set threshold, the switching circuit operates and outputs a signal.
- Sensitivity can be adjusted via a potentiometer or buttons to adapt to different media.
This principle enables VEGACAP 27 to reliably detect solid particles (such as cement, plastic pellets, grain) and liquids (such as water, oil, acid-base solutions).
VEGACAP 27 Technical Parameters
The following are the main technical parameters of VEGACAP 27 for selection reference. The specific values are subject to the latest Chinese manual.
| Parameter Item | Typical Value/Range |
|---|---|
| Measurement Principle | Capacitive |
| Application | Point level detection of solid particles and liquids |
| Process Connection | Thread, flange (optional) |
| Process Temperature | -40 … +200 °C (depending on version) |
| Process Pressure | -1 … +64 bar (depending on version) |
| Output Signal | Relay, transistor, NAMUR |
| Supply Voltage | 20 … 250 V AC/DC (depending on model) |
| Protection Rating | IP66/IP67 |
| Material | Stainless steel, PTFE, PEEK, etc. |
VEGACAP 27 Installation and Commissioning Points
Installation Precautions
- The installation position should avoid the inlet and agitator to prevent the probe from being directly impacted.
- For solid particles, horizontal or inclined installation is recommended to avoid material accumulation.
- For liquids, it can be installed vertically on the tank top or tank wall to ensure the probe can be fully immersed.
- Ensure the process connection is well sealed to prevent leakage.
- Electrical connections must comply with local explosion-proof and grounding regulations.
Commissioning Steps
- Confirm that the supply voltage matches the instrument nameplate.
- In an empty tank state, adjust the sensitivity until the switch operates (usually the indicator light turns on).
- Add material to the tank until it covers the probe and observe whether the switch state changes.
- If the operation is unreliable, fine-tune the sensitivity again until it is stable.
- Record the final setting and lock the adjustment mechanism.
After commissioning is completed, multiple verifications are recommended to ensure accurate and reliable point level detection.
VEGACAP 27 Chinese Manual Download
To obtain the complete VEGACAP 27 Chinese manual, please click the link below to download the PDF file. The manual contains detailed technical parameters, installation dimensions, electrical wiring diagrams, commissioning steps, and troubleshooting guide.
Download VEGACAP 27 Chinese Manual.pdf
Engineers and procurement personnel are advised to read the manual carefully before selection and installation to ensure correct use. If you have any questions, you can contact VEGA authorized distributors for technical support.