QBM81 Siemens: Differential Pressure Switch for Precise Monitoring

The QBM81 Siemens is a high-precision differential pressure switch designed for monitoring differential pressure, vacuum, and overpressure in a wide range of industrial and HVAC applications. This robust and reliable device offers an effective solution for detecting airflow in ducts, monitoring the condition of air filters, and detecting anomalies in ventilation and air conditioning systems. Its IP54 design ensures adequate protection against dust and splashes, ensuring optimal performance in demanding environments.

Technical Specifications

• Switch Type: Differential
• Measurement Range: Available in three variants: 20-300 Pa, 50-500 Pa, and 100-1000 Pa (QBM81-10 corresponds to the 100-1000 Pa range).
• Degree of Protection: IP54
• Mounting Orientation: Vertical diaphragm, pressure connections downwards
• Pressure Connection: Branch connection, 6.2 mm diameter
• Digital Outputs: EPU, Potential-free, Changeover contact
• Permissible Operating Pressure: 5000 Pa
• Measuring Recording Pressure: 20…300 Pa
• Switching Voltage: 24 VDC / 24…250 VAC
• Switching Current: 0.01…5 (3) A

Advantages

• High Precision: Precise differential pressure monitoring for reliable fault detection.
• Versatility: Suitable for a wide range of applications in ventilation, air conditioning, and process control.
• Robustness: IP54 design resistant to dust and splashes, ideal for industrial environments.
• Long-Term Stability: Special diaphragm ensures stability of switching points.
• Easy Integration: Various digital output options for simple integration into existing control systems.

Applications and Recommended Uses

The QBM81 Siemens is ideal for the following applications:

• Ventilation and Air Conditioning Installations: Airflow monitoring and fan fault detection.
• Air Filter Monitoring: Early detection of clogged filters to optimize system efficiency and protect equipment.
• Cleanrooms and Pressurized Zones: Precise pressure control to maintain controlled environmental conditions.
• Industrial Kitchens: Pressure monitoring to ensure adequate ventilation and prevent odors.
• Process Control Systems: Detection of anomalies in processes requiring precise pressure control.

For more detailed information about the QBM81 Siemens, including complete technical specifications and additional documentation, visit adjditec.com.

Optimize your pressure monitoring system with the QBM81 Siemens! Contact us today for a quote and discover how this pressure switch can improve the efficiency and reliability of your operations.