Description
Maintenance-free CO2 sensing element (depending on type) based on optical infrared absorption measurement (NDIR1)) Or with VOC2) sensing element based on a heated tin dioxide semiconductor. CO2 temperature (active or passive) and CO2 humidity-temperature multisensor No recalibrations required. Operating voltage AC 24 V or DC 1535 V. Signal outputs DC 0...10 V or DC 0...5 V adjustable Selectable passive temperature sensing element. 1) NDIR = Non dispersive infrared 2) VOC = volatile organic compounds (also called mixed gas) Use in ventilation and air conditioning plants to enhance room comfort and optimize energy consumption by providing demand-controlled ventilation. The sensor acquires: CO2 concentrations as an indication of occupancy in rooms where smoking is prohibited. VOC concentrations as an indication of odors such as tobacco smoke, body odor, or material fumes in the room. Relative humidity in the room. Room temperature. Sensors QPA10 and QPA20 can be used as a: Control sensor. Transmitter for building automation and control systems and / or display units (QPA20D only). Typical use: Acquisition of CO2 and VOC concentrations: In party rooms, lounges, fair pavilions and exhibition halls, restaurants, canteens, shopping malls, athletic centers, sales rooms, and conference rooms.. Siemens. Siemens. QPA2000.
Warranty Information
B2E Surplus includes a 90-day return window on all orders. We do not charge a restocking fee. If you have any issues with your order, an automated return can be opened by following the instructions located here: https://www.b2esurplus.com/returns/
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