Siemens - Room Temperature Sensor - QPA Series
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Experience the pinnacle of indoor air quality management with Siemens QPA Series Room Air Quality Sensors. These sensors are designed to enhance room comfort and optimize energy consumption through demand-controlled ventilation, making them an essential addition to any modern ventilation and air conditioning system.

Key Features:

  • Maintenance-Free CO2 Sensing: The QPA Series offers a maintenance-free CO2 sensing element based on optical infrared absorption measurement (NDIR). This technology ensures long-term accuracy and reliability in detecting CO2 concentrations.

  • VOC Sensing: Some models feature a VOC (Volatile Organic Compounds) sensing element based on a heated tin dioxide semiconductor. This is particularly useful for detecting odors such as tobacco smoke, body odor, or material fumes in the room.

  • CO2 Temperature and Humidity Sensing: The multisensor capabilities of QPA Series sensors extend to CO2 temperature and CO2 humidity-temperature, providing a comprehensive view of the indoor environment.

  • No Recalibrations Required: These sensors eliminate the need for frequent recalibrations, reducing maintenance efforts and costs.

  • Operating Voltage Options: QPA Series sensors can be powered with AC 24 V or DC 15-35 V, providing flexibility in various applications.

  • Adjustable Signal Outputs: These sensors offer signal outputs in DC 0-10 V or DC 0-5 V, allowing you to customize the sensor's response to your specific requirements.

Applications:

The Siemens QPA Series Room Air Quality Sensors find their utility in a range of applications:

  • Demand-Controlled Ventilation: Use these sensors to enhance room comfort and optimize energy consumption by providing demand-controlled ventilation. They help maintain optimal indoor air quality based on real-time data.

  • Monitoring CO2 Concentrations: Ideal for spaces where smoking is prohibited, such as museums, theaters, auditoriums, offices, and classrooms, these sensors effectively monitor CO2 concentrations as an indication of occupancy.

  • VOC Detection: Detect volatile organic compounds to assess indoor air quality, especially in environments where odors need to be monitored and controlled.

  • Relative Humidity and Temperature Measurement: These sensors offer a comprehensive view of the indoor environment by measuring relative humidity and room temperature.

The QPA Series is designed to provide accurate and reliable air quality data, making it an essential component of building automation and control systems. With the QPA Series sensors, you can ensure that indoor spaces are comfortable and energy-efficient.

Part Numbers:
QPA1000 Room VOC Sensor 0…5V 0…10V 0…100%VOC (S55720-S119)
QPA1004 Room CO2 Sensor - Basic 0…10V 0…2000ppm; Accuracy ≤± 60 ppm + 4 % of measured value (S55720-S453)
QPA1064 Room CO2/Temperature Sensor - Basic 0…10V 0…2000ppm; Accuracy ≤± 60 ppm + 4 % of measured value (S55720-S454)

 

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Total price $394.00