24V DC XKC-Y26A-PNP Thin-Tube Liquid Level Detection Sensor – PNP Output
This model operates from a 24V DC power supply and provides a PNP transistor output interface. It is suitable for liquid pipelines, water purification equipment, automatic filling systems, industrial automation equipment, PLC systems and liquid level monitoring applications.
The internal signal-processing circuit detects the capacitance variation and converts it into an electrical control signal. When the change exceeds the sensing threshold, the sensor determines that liquid is present and switches the PNP output.
The connected controller should support a PNP sourcing-type sensor signal.
24V DC XKC-Y26A-PNP Thin-Tube Liquid Level Detection Sensor – PNP Output
Available:In Stock
- Product SKU: KG1395
₹ 849
₹ 998
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Specification
Description
24V DC XKC-Y26A-PNP Thin-Tube Liquid Level Detection Sensor – PNP Output
The XKC-Y26A-PNP 24V is a thin-tube non-contact capacitive liquid level sensor designed to detect the presence of liquid inside small-diameter non-metallic pipes. The sensor mounts externally around the pipe using its integrated spring-clip mechanism and detects liquid through the pipe wall without making direct contact with the liquid.This model operates from a 24V DC power supply and provides a PNP transistor output interface. It is suitable for liquid pipelines, water purification equipment, automatic filling systems, industrial automation equipment, PLC systems and liquid level monitoring applications.
Features
- Non-contact liquid detection through non-metallic pipes
- 24V DC operation
- PNP transistor output interface
- Suitable for thin non-metallic pipelines
- Suitable for approximately 5mm to 10mm pipe outer diameter
- Maximum pipe outer diameter approximately 11mm
- Integrated spring-clip pipe mounting design
- No direct contact between sensor and liquid
- Easy installation without cutting or drilling the pipe
- Adjustable sensing sensitivity
- Suitable for cold, hot and boiling liquid detection
- High sensitivity and stable sensing performance
- Strong anti-interference capability
- Pure electronic non-mechanical sensing structure
- PC V0 fire-retardant housing
- IP67 waterproof construction
- CE certified
- RoHS 2.0 compliant
Working Principle
The XKC-Y26A-PNP operates using the capacitive sensing principle. When no liquid is present close to the sensing section, the sensor maintains its normal static capacitance. When liquid inside the pipe reaches the sensing point, additional parasitic capacitance is introduced.The internal signal-processing circuit detects the capacitance variation and converts it into an electrical control signal. When the change exceeds the sensing threshold, the sensor determines that liquid is present and switches the PNP output.
Technical Details
- Item Type: Thin-Tube Non-Contact Liquid Level Sensor
- Series: XKC-Y26A
- Model: XKC-Y26A-PNP
- Sensing Principle: Capacitive sensing
- Supply Voltage: DC 24V
- Output Type: PNP Transistor Output
- Applicable Pipe Outer Diameter: Approx. 5mm to 10mm
- Maximum Pipe Outer Diameter: Approx. 11mm
- Liquid Level Accuracy: ±1.5mm
- Operating Temperature Range: -20°C to 105°C
- Operating Humidity Range: 5% to 100%
- Housing Material: PC V0 Fire-Retardant Material
- Waterproof Rating: IP67
- Safety Certification: CE
- Environmental Certification: RoHS 2.0
Mechanical Drawing & Dimensions

Mechanical Dimensions
- Sensor Body Length: Approx. 34.4mm
- Sensor Body Width: Approx. 20mm
- Sensor Body Height: Approx. 13.6mm
- Overall Height Including Clip: Approx. 24.9mm
- Cable Length: Approx. 500mm
- Integrated Spring-Clip Pipe Holder
- Built-In Sensitivity Adjustment Control
- Built-In Indicator Light
Installation Method

Installation Procedure
- Carefully pull open the spring clips
- Place the liquid pipe between the two spring clips
- Release the clips so that the sensor securely grips the pipe
- Ensure the sensing section remains in close contact with the pipe
- Position the sensor at the required liquid-level detection point
- Recommended pipe outer diameter is approximately 5mm to 10mm
- Maximum pipe outer diameter should not exceed approximately 11mm
- Do not open the spring clip beyond approximately 60°
After Installation

Sensitivity Adjustment
- Use a small screwdriver to adjust sensing sensitivity
- Rotate counterclockwise to increase sensitivity
- Rotate clockwise to decrease sensitivity
- Perform sensitivity adjustment after installing the sensor on the actual pipe
Pipe Diameter Requirement
- Recommended Pipe Outer Diameter: Approx. 5mm to 10mm
- Maximum Pipe Outer Diameter: Approx. 11mm
- Designed for thin non-metallic pipelines
- Ensure the sensing clip fits securely around the pipe
- Ensure proper contact between the sensing section and pipe surface
- Avoid direct installation on metallic pipes
PNP Output Interface
The XKC-Y26A-PNP 24V provides a PNP transistor output intended for use with compatible PLC inputs, industrial controllers and automation systems.The connected controller should support a PNP sourcing-type sensor signal.
PNP Wiring Diagram
XKC-Y26A-PNP 24V Specific Wiring Diagram Required
Wire Connection
- Brown Wire – VCC: Power supply positive
- Blue Wire – GND: Power supply negative / 0V
- Yellow Wire – OUT: PNP signal output
- Black Wire – MODE: Output mode selection wire
Environmental & Mechanical Specifications
- Operating Temperature Range: -20°C to 105°C
- Operating Humidity Range: 5% to 100%
- Liquid Level Accuracy: ±1.5mm
- Applicable Pipe Outer Diameter: Approx. 5mm to 10mm
- Maximum Pipe Outer Diameter: Approx. 11mm
- Housing Material: PC V0 Fire-Retardant Material
- Waterproof Performance: IP67
- Safety Certification: CE
- Environmental Certification: RoHS 2.0
Installation & Usage Notes
- Install only on suitable non-metallic pipes
- Make sure the sensing section fits securely against the pipe surface
- Do not force the spring clips beyond approximately 60°
- Keep the sensing area clean and free from debris
- Keep metallic objects away from the sensing section where possible
- Avoid strong impacts and mechanical damage
- Avoid installation close to excessive heat sources
- Protect the sensor from prolonged direct sunlight and direct rain during outdoor use
- Adjust sensitivity after installation if necessary
Applications
- Thin water pipes
- Small-diameter liquid pipelines
- Water dispensers
- Water purification systems
- Automatic filling equipment
- Liquid dispensing systems
- Liquid level alarm systems
- Industrial liquid monitoring
- PLC automation systems
- Automatic liquid-level control systems
- Industrial control equipment
- Home appliances
- IoT liquid monitoring systems
Troubleshooting

Package Includes
- 1 × 24V DC XKC-Y26A-PNP Thin-Tube Liquid Level Detection Sensor – PNP Output