Space Mounting Air Quality Sensor, Selectable Output 0/10Vdc or 4-20mA




The self-calibrating microprocessor-controlled space air quality sensor is used to determine the air quality on basis of a mixed gas sensor ⁄ VOC sensor.

It is used to measure the air quality for quantitative evaluation of room air pollution with contaminating gases.

The air quality sensor does not trace concentrations of individual gases, but assesses the mixed gas concentration.

Detectable gases: mixed gas, vapours of VOCs, cigarette smoke, automobile exhaust gases, human exhalation, combustion smoke (from wood, paper, plastics).

The sensor‘s lifetime depends on the type of burden and gas concentration.



Power Supply:                            24V AC / DC (± 10%)

Power Consumption:             < 1.5W / 24V DC typical

 < 2.9VA / 24V AC typical

 Peak Current 200mA

Sensor:                                             VOC sensor (metal oxide), with automatic

  self-calibration (VOC = volatile organic


Measuring Range:                       0…100% air quality; referred to calibrating gas;

   multi-range switching (selectable via DIP switches)

   VOC sensibility low, medium, high

Output:                                               0 – 10V (OV = clean air, 10V = contaminated air) or

    4…20mA (selectable via DIP switches; switch point

    adjustable from 0…100% of output signal).

Measuring Accuracy:                 ± 20% of final value (referred to calibrating gas)

Service Life:                                      > 60 months

Gas Exchange:                                 By diffusion

Warm-up Time:                              Approx. 1 hour

Ambient Temperature:              0…+50˚C

Response Time:                              Approx. 1 minute

Electrical Connection:                0.14 – 1.5mm², via terminals

Enclosure:                                           Plastic, material ABS,

      colour pure white (similar to RAL 9010),

      stainless steel enclosure optional

Dimensions:                                       85 x 85 x 27mm (Baldur 1)

      100 x 100 x 25mm (stainless steel)

Installation:                                        Wall mounting or on in-wall flush box, Ø55mm,

       base with 4-hole for mounting on vertically or

       horizontally installed in-wall flush boxes for

       cable entry from the back, with predetermined

        breaking point for on-wall cable entry from top /

        bottom in case of plain on-wall installation.

Protection Class:                              III (according to EN 60730)

Protection Type:                               IP 30 (according to EN 60529)

Standards:                                            CE conformity, electromagnetic compatibility

                       according to EN 61 326, EMC Directive 2014 /

        30 / EU, Low Voltage Directive 2014 / 35 / EU

Weight 90 g
Specification Guide