DIFFERENTIAL PRESSURE SENSOR QBM3020-5

Description

The Siemens QBM3020-5 is a high-precision HVAC differential pressure sensor used to measure very small air or non-aggressive gas pressure differences in ventilation systems. It is mainly used in duct pressure monitoring, filter monitoring, airflow control, and building automation systems (BMS/HVAC).

Key Features

• Measures very low differential air pressure (HVAC applications)
• High-accuracy diaphragm-based sensing element
• 0–10V analog output for direct controller integration
• Suitable for clean air and non-aggressive gases
• Zero-point adjustment for calibration flexibility
• Stable long-term performance with temperature compensation
• Easy installation with duct tubing connections
• Maintenance-free operation
• Compact industrial housing design
• Ideal for building automation and ventilation control

Specifications

1. Product Type: Differential Pressure Sensor
2. Model: QBM3020-5
3. Measuring Range: 0 – 500 Pa
4. Output Signal: 0–10V DC (linear or selectable characteristic in some variants)
5. Supply Voltage: 24V AC / 13.5–33V DC
6. Medium: Air and non-aggressive gases
7. Response Time: < 20 ms (variant dependent)
8. Protection Class: IP54
9. Pressure Connection: Tube connection (approx. 6 mm)
10. Application: HVAC ducts, filter monitoring, airflow measurement, fan control systems