I. Working Principle: Measurement Based on Capacitance Changes
The core principle of a capacitive level gauge is to detect capacitance by measuring changes in the dielectric constant of the material. The sensor probe and the metal container wall form a coaxial capacitor. When the liquid level changes, the capacitance between the probe and the container wall changes accordingly, thus measuring the liquid level.
II. Typical Application Scenarios
The HNL60-B series capacitive level gauge is suitable for:
1. Liquids, solids, slurries, and viscous materials (conductive or non-conductive)
2. Harsh environments such as high temperature, high pressure, strong acid, and strong alkali
3. Mixed tanks and foam-dense conditions (coaxial type optional)
4. Overflow protection, pump control, dry running prevention, high/low level alarm, and other control scenarios
5. Widely used in food, beverage, pharmaceutical, feed, detergent, metallurgy, power, and chemical industries.
III. Product Advantages
1. Insensitive to adhering substances, preventing false alarms
2. Simple installation and operation
3. Accurate measurement results and strong stability
4. Wide application, various materials available, and customization supported
IV. Product Selection Considerations
When selecting a model, consider the following:
1. Medium Properties
For conductive media (such as water and carbon powder), coated probes (PTFE, PFA, PP) are recommended. For non-conductive media (such as oil and plastic granules), exposed electrodes can be used. 2. Temperature and Pressure
High-temperature conditions (>80℃) require a high-temperature type (maximum 200℃).
High-pressure conditions (maximum 4.0MPa) require confirmation of process connections and sealing structures.
3. Output and Control Requirements
Standard 4~20mA output allows for interface with DCS, PLC, and other systems.
RS485 and other communication methods are optional.
4. Interface Size and Process Pressure
5. Probe Length and Type
Guide rod type
Weighted weight type
V. Summary
The HNL60-B series capacitive level gauge, with its high precision, anti-interference, corrosion resistance, and flexible installation, is an ideal choice for industrial level measurement.
For selection support or more technical details, please contact a professional engineer for one-on-one advice.