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Long-term stability (PM) ± 1.25 g/m3 (± 1.25 % of measured value/year) Measuring accuracy (PM) typically ± 10 g/m3 (± 10 % of measured value) at PM 2.5 typically ± 25 g/m3 (± 25 % of measured value) at PM 10 Measuring range (PM) 0... 50 g/m3 0...100 g/m3 0...300 g/m3 0...500 g/m3 Particle size (PM) PM 2,5 (0,3...2,5 m); PM 10 (0,3...10 m) Voltage supply 24 V AC/ DC (± 10 %) Power consumption < 4.4 W/ 24 V DC typical; < 6.4 VA/ 24 V AC typical; peak current 200 mA Data points temperature [°C], relative humidity [% r.H.], air quality (VOC) [%,ppb], fine dust (PM) [g/m3], carbon dioxide (CO2) [ppm], setpoint potentiometer [%] Measuring range, humidity 0...100 % RH Operating range, humidity 0...95 % r. H. (without dew formation) Deviation of humidity typical ± 2 % r. H. (20…80 % r. H. ); at + 25 °C, otherwise ± 3 % Measuring range, temperature 0...+ 50 °C (output equivalent to 0 -10 V or 4...20 mA) Operating range, temperature 0...+50 °C Temperature deviation typically ± 0.2 K at +25 °C Sensor, VOC VOC sensor (metal oxide) with automatic calibration (VOC = volatile organic compounds) Measuring range, VOC 0...100 % air quality; referred to calibrating gas; multi-range switching (selectable via DIP switches) VOC sensitivity low, medium, high Measuring accuracy, VOC ± 20 % of final value (referred to calibrating gas) Service life > 60 months (under normal load conditions) depending on the type of loading and gas concentration Ambient conditions 0...+50 °C Measuring range, CO2 0...2000 ppm or 0...5000 ppm (selectable via DIP switches) Sensor, CO2 Optical NDIR sensor (non-dispersive infra-red technology), with manual calibration (via zero button), with automatic calibration (can be deactivated via DIP switches) Measuring accuracy, CO2 typically ± 30 ppm ± 3 % of measured value Temperature dependence, CO2 ± 5 ppm/ °C or ± 0.5 % of measured value/ °C (whichever is higher) Pressure dependence ± 0,13 %/ mm Hg Gas exchange by diffusion Warm up time approx. 1 hour Response time < 2 minutes Bus protocol Modbus (RTU mode), address range 0...247 selectable Signal filtering 4 s / 32 s Electrical connection 0.14 - 1.5 mm2 via terminal screws Housing plastic, material ABS, colour pure white (similar to RAL 9010) Dimensions 98 x 98 x 33 mm (Baldur 2) Installation wall mounting or on in-wall flush box, Ø 55 mm, base with 4 holes, for attachment to vertically or horizontally installed in-wall flush boxes for rear cable entry, with predetermined breaking point for cable entry from top/ bottom in case of plain on-wall installation Long-term stability < 2 % in 15 years Protection class III (according to EN 60 730) Protection type IP 30 (according to EN 60 529) Standards CE conformity, electromagnetic compatibility according to EN 61 326, EMC Directive 2014/ 30/ EU, Low Voltage Directive 2014/ 35/ EU |
