Belimo differential pressure switch 50 to 500 Pa - 01APS-10U

Belimo Differential Pressure Switch 50 to 500 Pa - 01APS-10U

The differential pressure switch 50 to 500 Pa - 01APS-10U is designed to monitor pressure differences in air ducts and HVAC systems. This switch is used to reliably signal overpressure, underpressure, or filter clogging. Once the preset pressure value is reached, the contact automatically switches, allowing you to immediately trigger an alert or action within your system. Thanks to the adjustable switch threshold and automatic reset, the switch operates independently without complex control.

Advantages and Features

• Adjustable measurement range: With a range of 50 to 500 Pa, you can easily calibrate the switch for applications such as filter monitoring or airflow control in ducts.
• High repeatability: The ±2.5% accuracy ensures consistent switching points, which is crucial for reliable signalling.
• Stable switching behaviour: The 20 Pa switching differential prevents unwanted toggling during minor pressure fluctuations, ensuring smooth operation.
• Wide applicability: Suitable for air and non-aggressive gases, allowing use in various ventilation and climate control systems.
• Long service life: Designed for at least 1,000,000 switching cycles, ensuring extended use with minimal maintenance.

Performance and User Experience

With a measuring range from 50 to 500 Pa, this differential pressure switch is ideal for applications such as filter monitoring in air handling units or checking airflow in ducts. The accuracy and fixed switching differential prevent unwanted switching due to slight pressure variations. In practice, this results in stable operation and clear signalling when maintenance is required. Its robust construction and IP54 protection rating make it suitable for technical spaces where dust and moisture are factors.

Installation, Maintenance and Applications

Installation is straightforward thanks to the terminal blocks for standard wiring and included accessories such as PVC tubing and duct connections. For optimal operation, mount the switch vertically with downward pressure ports. When mounted horizontally, you should account for a slight deviation in the switching point. The cable gland with strain relief ensures a tidy and secure connection. Due to its low-maintenance operation and long lifespan, the switch is well suited for long-term use in HVAC and energy monitoring systems.

This differential pressure switch combines precise pressure monitoring with easy installation and reliable operation, making it a practical solution for monitoring and safeguarding air handling installations.