09,22,2026 16 views
The LF32 differential pressure switch is a highly sensitive and reliable pressure sensing device designed specifically for ventilation systems, air conditioning, and industrial protection scenarios. This product triggers switch action by detecting small pressure changes and is widely used in fields such as filter monitoring, blower control, overheating protection, and frost protection in cooling circuits. Its visually adjustable design allows users to intuitively set action values, making it easy to operate.
1、 Core Features
1. High precision adjustment: Provides multiple adjustable pressure ranges (20Pa~5000Pa) to meet different application requirements. Strict error control (≤± 15% or ± 6Pa) ensures the accuracy and consistency of action values.
2. Wide applicability: Compatible with air and harmless gas media, with a maximum working pressure of 10kPa. Supports various scenarios such as ventilation system flow control, heating coil overheating protection, and industrial cooling circuit frost protection.
3. Flexible installation and protection: Vertical installation design, compatible with standard 6.0mm hose interface. The protection level can be selected from IP54 (with casing) or IP00 (without casing) to meet different environmental requirements.
4. Reliable electrical performance: Single pole double throw (SPDT) contact method, initial resistance ≤ 100 milliohms, load capacity 1.5A/250V. Provide 6.3mm straight insertion terminals or screw connections for flexible and convenient wiring.
2、 Technical parameters
Pressure range: 20Pa~5000Pa (optional by model, such as LF32-02:20~200Pa, LF32-50: 1000~5000Pa)
Pressure difference threshold: 10Pa~250Pa (depending on the model)
Working temperature: -20 ℃~+85 ℃
Interface form: 6.0mm outer diameter hose
Electrical parameters: 1.5A/250V, contact resistance ≤ 100m Ω
3、 Typical application scenarios
Ventilation system: monitor filter blockage, adjust the linkage between blower and air valve.
Industrial protection: detect overheating of heating coils or frosting of cooling circuits, and promptly trigger safety mechanisms.
Environmental control: used for monitoring differential pressure in air conditioning systems and clean rooms.
4、 Selection Guide
Users can choose the corresponding model according to their actual pressure needs (example):
Low pressure scenario: LF32-02 (20~200Pa, pressure difference 10Pa)
Medium to high pressure scenario: LF32-50 (1000~5000Pa, pressure difference 250Pa)
The LF32 wind pressure differential switch, with its advantages of high precision, wide applicability, and easy operation, has become an ideal choice for ventilation system control and industrial safety protection. Both small ventilation equipment and large industrial circuits can ensure stable system operation through precise pressure sensing and reliable switch actions.
