· Maintenance-free CO 2 sensing element (depending on the type) based on optical infrared absorption measurement (NDIR 1 )
· Or with VOC 2) sensing element, based on a heated tin dioxide semiconductor
· CO 2 temperature (active or passive) and CO 2 humidity-temperature multisensor
· No recalibrations required
· Operating voltage AC 24 V or DC 15…35 V
· Signal outputs DC 0...10 V or DC 0...5 V or 4...20 mA adjustable
· Selectable passive temperature sensing element
· Or with VOC 2) sensing element, based on a heated tin dioxide semiconductor
· CO 2 temperature (active or passive) and CO 2 humidity-temperature multisensor
· No recalibrations required
· Operating voltage AC 24 V or DC 15…35 V
· Signal outputs DC 0...10 V or DC 0...5 V or 4...20 mA adjustable
· Selectable passive temperature sensing element