lindab | we simplify construction CO 2 -sensor with built in relay CO2RT-R-LB Dimensions 85 mm 100 mm 30 mm Description CO2RT-R-LB is a room sensor for measuring carbon dioxide levels in air. It has a builtin relay with switching output. • Built-in relay • CO 2 -level 0 … 2000 ppm • Excellent long term stability • Snap-in cover Lindab’s CO2RT-R-LB with patented auto calibration pro- cess sets new standards in CO 2 measuring for HVAC appli- cations. Measuring principle The CO 2 -concentration is measured by means of infrared light, a technique that measures the absorption in gases. It has a reference measuring system that compensates values in relation to changes in light intensity. The method gives several advantages: • Very high accuracy • Exact identification of the detected gas • Low risk for contamination • Short response time • High long term stability • Long calibration interval ( > 5 years) R r e ela y s s t t a a t t u u s s s S wi w t i c t h c i h n i g n o g ff off The sensor is mounted in the cover-part of the casing. The cover is easy to detach from the back by means of snap-in grips and detachable terminals. This makes mounting easier. Furthermore, no cables have to be disconnected, which sim- plifies service and replacement. Applications The CO 2 -level gives a direct indication of the indoor air qual- ity. With this basic information, the ventilation can be con- trolled with high precision and the air quality improved. At the same time, the supply air will only be increased when necessary and the energy costs will thereby be reduced. Hysteresis and level H H y st t e e r r e e s s is is [% [% of o m f e m a e su a r s in u g rin ra g ng ra e n ] ge] ON 2 2 5% % o o f f m m e e a a s su u r r i i n n g g r r a a n n g e Lev L e e l v [ e % l [% of o m f m ea e s a u su ri r n in g g r r a a ng e] ] OFF s Swi t t c c h h i i n n g g o o n n Wiring 1 Supply voltage 24 V AC 2 System neutral 24 V AC 3 Common 4 Normally open 5 Normally closed Screw terminal: Max. 1.5 mm² 500 1000 2000 ppm Order code Product CO2RT-R-LB Lindab reserves the right to make changes without prior notice 1 2020-05-19
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