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AERASGARD® KLQ-CO2-W

Duct air quality (VOC) and CO2 sensor AERASGARD® KLQ-CO2-W

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371,77 €
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Product group: WG02
Duct air quality (VOC) and CO2 sensor AERASGARD® KLQ-CO2-W
Patented quality product (patent no. DE 10 2014 010 719.1)

Maintenance-free AERASGARD® KLQ-SD duct air quality transmitter with active output, automatic calibration (fixed), in a compact plastic housing with snap-on cover, for determining theVOC content in three sensitivity levels (low/medium/high). The measuring transducer converts the measured values into a standard signal of 0-10 V.

Maintenance-free AERASGARD® KLQ-W duct air quality transmitter with active/switching output, automatic calibration (can be deactivated), in a compact plastic housing with quick-locking screws, for determining theVOC content in three sensitivity levels (low/medium/high). The measuring transducer converts the measured values into a standard signal of 0-10 V or 4...20 mA (switchable).

The sensor device is used in offices, hotels, convention centres, apartments, shops, etc. for the purpose of assessing the indoor climate. This enables energy-saving room ventilation on an as-needed basis, thereby reducing operating costs and improving well-being.
The air quality is detected by a VOC sensor (mixed gas sensor for volatile organic substances). This sensor determines the load of contaminated gases in the room air, such as from cigarette smoke, body perspiration, exhaled breathing air, solvent vapours, emissions from building components, etc. Low, medium or high VOC sensitivity can be selected depending on the expected air contamination.
Technical details
Voltage supply
24 V AC/ DC (± 10 %)
Power consumption
< 4.8 W/ 24 V DC typical; < 6.8 VA/ 24 V AC typical; peak current 200 mA
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
Output, VOC
0 -10 V (0 V = clean air, 10 V = polluted air) or 4...20 mA (selectable via DIP switches,
switchpoint can be adjusted from 0...100 % of the output signal)
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
Measuring range, CO2
multi-range switching (selectable via DIP switches)
0...2000 ppm; 0...5000 ppm
Sensor, CO2
optical NDIR sensor (non-dispersive infra-red technology)
including atmospheric pressure compensation (up to 1100 mbar)
with automatic and manual calibration
Output, CO2
0 -10 V or 4...20 mA (selectable 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
Relay output
with potential-free changeover contact 24 V (assignment selectable via DIP switches)
Response time
< 2 minutes
Output
0 -10 V or 4...20 mA, working resistance < 800 Ω
(selectable via DIP switches, selected variant applies for all outputs),
with offset potentiometer (± 10 % of the measuring range)
Ambient temperature
–10...+60 °C
Process connection
by mounting flange, plastic
(included in the scope of delivery)
Protective tube
PLEUROFORM, material polyamide (PA6), with torsion protection, Ø 20 mm, vmax = 30 m/s (air)
without filter: NL = 202.5 mm / with plastic filter: NL = 235 mm (optional with metal filter: NL = 227 mm)
Electrical connection
0.14 - 1.5 mm² via terminal screws
Cable connection
cable gland, plastic (M 16 x 1.5; with strain relief, exchangeable, max. inner diameter 10.4 mm) or
M12 connector according to DIN EN 61076-2-101 (optional on request)
Housing dimensions
126 x 90 x 50 mm (Tyr 2)
Cable gland
M 16 x 1.5; including strain relief,
exchangeable
Long-term stability
< 2 % in 15 years
Protection class
III (according to EN 60 730)
Protection type
IP 65 (according to EN 60 529) housing only! (PLEUROFORM IP 30)
Standards
CE conformity,
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU