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Capacitive level sensors: advantages and applications with CAMLogic

06/10/2025

Accurate level control is a main demand in many industrial applications. Among the available technologies, capacitive level sensors are one of the most versatile, reliable, and durable solutions. In this article, we’ll explore how they work, when to choose them, and the benefits they offer, with a focus on CAMLogic's dedicated solution.

What Are Capacitive Level Sensors?

Capacitive sensors detect the presence of a material by measuring the variation in electrical capacitance between two conductive elements. When a material (solid or liquid) with a dielectric constant different from air enters the sensor’s field, the capacitance changes. Once a threshold is exceeded, the sensor sends an output signal.

Compared to technologies with moving parts, capacitive sensors:

  • Have no mechanical wear
  • Are ideal for environments with vibration
  • Can detect materials through non-conductive walls (e.g., plastic silos)

However, choosing the right sensor model requires evaluating the material type and environmental conditions.

PFG06

Among CAMLogic’s solutions, the PFG06 is a capacitive level sensor specifically designed for solid materials detection. It is ideal for industrial applications requiring accurate level detection without direct contact with the product.

Key Features

  • No moving parts
  • Reinforced polyamide body, lightweight and durable
  • Suitable for vertical, horizontal, or inclined installation
  • Supplied with standard sensitivity setting (10 mm), adjustable via internal trimmer
  • Available with AC or DC power supply and DPDT microswitch output

✅ Certifications

  • ATEX (II 1/2 D Ex ta/tb IIIC T90°C IP65 Da/Db)
  • Food-grade compliance
  • UKCA for the British market

Technical Specifications (Summary)

  • Operating temperature: –20°C to +70°C
  • Process pressure: 0.8 to 1.1 bar
  • Protection rating: IP65
  • Adjustable sensitivity (up to approx. 10 mm from the probe)
  • Contact rating: 5 A at 250 V AC
PFG06 internal structure
CAMLogic Industry Sectors

Industrial Applications of the PFG06

The PFG06 is successfully used in several industries, including:

  • Food processing: flour, sugar, powdered milk
  • Feed and agriculture: cereals, pellets, semolina
  • Plastics industry: granules and plastic powders

Technical advantages and limitations of PFG06

✅ Advantages

  • Versatility: can be installed in any position
  • Durability: impact- and vibration-resistant casing
  • Reliability: no moving parts → reduced maintenance
  • Customization: available with multiple process connections
  • Safety: ATEX-certified for explosive and food-grade environments

❌ Limitations

  • Not suitable for liquids: the PFG06 is designed exclusively for solid materials.
  • Build-up risk: in sticky powder environments, periodic cleaning may be required
  • Low dielectric materials: may require more accurate sensitivity calibration

Why you should choose CAMLogic

CAMLogic specializes in designing level sensors for critical industrial environments.

The PFG06 reflects over 60 years of experience, combined with:

  • Certified, high-quality materials
  • Italian design and manufacturing
  • Direct technical support
  • Custom solutions available upon request

The PFG06 is the ideal solution for those seeking a certified, robust, and reliable level sensor for solids, ready to be integrated into new or existing systems.

🔗 Discover the PFG06 Sensor on CAMLogic’s website

Any questions? Contact us