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Patented quality product (patent no. DE 10 2014 010 719.1)
The maintenance-free microprocessor-controlled duct sensor AERASGARD® KLQ - SD with automatic calibration (fixed), housing with snap-on lid, is used for determining the air quality based on a mixed gas sensor/VOC sensor. The measurement value is converted into standard signal of 0 -10 V.
The maintenance-free microprocessor-controlled duct sensor AERASGARD® KLQ - W with automatic calibration (can be deactivated via DIP switches), housing with quick-locking screws, is used for determining the air quality or based on a mixed gas sensor/VOC sensor. The measurement value is converted into standard signal of 0 -10 V or 4...20 mA.
It is used - For air quality measurement in offices, hotels, meeting rooms and convention centres, apartments, stores, and restaurants, etc. - For quantitative evaluation of room air pollution with contaminating gases (cigarette smoke, body perspiration, exhaled breathing air, solvent vapours, emissions from building members and cleaning agents) - For adjustable sensitivity regarding the maximum air contamination to be expected - For room ventilation as-needed, enabled by air changes only taking place when air is polluted while conserving energy at the same time.
The sensor's service life depends on the type of burden and gas concentration and is more than 60 months under normal load conditions. The new design allows you to choose between three sensitivity ranges that are adjusted using DIP switches, giving you three measuring ranges: LOW for low, MEDIUM (default) for medium, and HIGH for high VOC sensitivity. VOC is the abbreviation for volatile organic compounds. According to the definition by the World Health Organization WHO, VOC are organic substances with a boiling range from +60 to +250 °C. Examples of VOCs include compounds of the substance groups alkanes/ alkenes, aromatic compounds, terpenes, halogenated hydrocarbons, esters, aldehydes, and ketones. There is a large number of naturally occurring VOCs, some of which are also released into the atmosphere in substantial quantities, e.g. terpenes and isoprene from forests.
|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|
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
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)|
|Measuring range, CO2||
multi-range switching (selectable via DIP switches)
0...2000 ppm; 0...5000 ppm
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|
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|
by mounting flange, plastic
(included in the scope of delivery)
PLEUROFORMTM, 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|
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016),
housing cover for display is transparent !
|Housing dimensions||126 x 90 x 50 mm (Tyr 2)|
M 16 x 1.5; including strain relief,
|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)|
electromagnetic compatibility according to EN 61326,
according to EMC Directive 2014/ 30/ EU
three-line display with illumination, cutout approx. 70 x 40 mm (W x H),
for displaying actual humidity, actual temperature, air quality and / or the actual CO2 content
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