PRODUCT DESCRIPTION The K33VC is a simple, low cost, state-of-theart non-dispersive infrared (NDIR) carbon dioxide (CO2) transmitter designed for general purpose application. 

　　K33VC High Concentration

　　Carbon dioxide sensor/transmitter

　　PRODUCT DESCRIPTION

　　The K33VC is a simple, low cost, state-of-theart non-dispersive infrared (NDIR) carbon dioxide (CO2) transmitter designed for general purpose application.

　　The K33VC measures the carbon dioxide concentration in the ambient air up to 30 volume % and transforms the measurement data into 0-10 V and 4-20mA output signals.

　　A quick in field fresh-air calibration feature is also included for fast & easy sensor maintenance.

　　FEATURES

　　Using patented state-of-the-art non-dispersive infrared (NDIR) wave-guide technology and offers reliable measurements measurement range: 0 – 30 vol.% CO2 two analogue outputs:

　　OUT1: 0 - 10 V (= 0 - 20 vol.% CO2 )

　　OUT2: 4 – 20mA (= 0 - 20 vol.% CO2 )

　　simple maintenance tool with in-field fresh-air calibration features  non-frill design; cost-optimized for connection to DDCs or other controllers 

　　 Two different housing options:

　　1) IP20 wall housing

　　2) IP45 industrial wall housing

　　Two different measurement output options;

　　1) - 20% default setting

　　2) - 30% to be specified as K33VC-30%

　　APPLICATIONS

　　K33VC is a very cost-effective CO2

　　sensor for general application where measurement of high concentration CO2 is required.Typical applications include the CO2 incubator for virus culture and concrete aging processes.

　　CONNECTIONS

　　Screw terminals

　　1 G+ 24 V AC/DC (+)

　　2 G0 System ground (-)

　　3 M Signal ground, internally connected G0

　　4 Vo Linear output (+) 0-10 V = 0 – 20 vol.% CO2

　　5 Io Linear output (+) 4-20mA = 0 – 20 vol.% CO2

　　6 Cal Calibration command input (S/C to M)

　　K33VC

　　IP20 wall housing without display

　　Power supply has to be connected to G+ and G0. G0 is

　　considered as system ground. If the analogue output is

　　connected to a controller the same ground reference has to be

　　used for the K33VC unit and for the control system

　　K33VC-IP45

　　IP45 wall housing

　　without display