maintenance-free CO2 sensing element (depending on the 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 15…35 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)
Type reference | CO2 | VOC | Temperature | Humidity | Measured value |
QPM1100 | --- | Slow (R1) | --- | --- | --- |
Normal (R2) | |||||
Fast (R3) | |||||
QPM2100 | 0…2000 ppm | --- | --- | --- | no |
QPM2102 | 0…2000 ppm | Slow (R1) | --- | --- | no |
Normal (R2) | |||||
Fast (R3) | |||||
QPM2102D | 0…2000 ppm | Low (R1) | --- | --- | yes |
Normal (R2) | |||||
High (R3) | |||||
QPM2160 | 0…2000 ppm | --- | 0...50 °C / ?35...+35 °C | --- | no |
QPM2160D | 0…2000 ppm | --- | 0...50 °C / ?35...+35 °C | --- | yes |
QPM2162 | 0…2000 ppm | --- | 0...50 °C / ?35...+35 °C | 0...100 % | no |
QPM2162D | 0…2000 ppm | --- | 0...50 °C / ?35...+35 °C | 0...100 % | Yes |
QPM2180 | 0…2000 ppm | --- | Depending on connected sensing element | --- | no |
