principle of ndir co - sensor+test · 2011. 1. 7. · principle of ndir co2 sensors the...

CO2 sensor module

CO2 probe in high concentration

CO2 & Temperature Indicator

CO2 & Temperautre Controller

CO2 Monitor

Oxygen Monitor

Oxygen sensor module

Principle of NDIR CO2 sensors

The NDIR(Non-Dispersive Infrared) utilizes the phenomenon that a gas

The amount of absorbed IR light is proportional to the concentration.For example, H2O has the maximum absorbance at 1.4 and 1.9㎛, SO2 at 4.0㎛, CO2 at 4.3㎛, NO at 5.3㎛.

An IR source at the end of the measurement chamber emits light into

light at its characteristic wavelength.

The filter converts the amount of absorption into electric signals. The IR detector measures the strength of the signal that passes through.

Differences between NDIR Single and Dual Wavelength type

Single Wavelength Type has one detector, so it shows largererrors than Dual Wavelength type senosrs as time passes.

changes of the IR lamp, the supplied power, the amplifier , or outside temperature.

Although this type can be applied with calibratable instrumentswhich measures the gas concentration using standard gas, CO2 sensors with Single type are not suitable to measure and control indoor air quality.

It has two parts unlike the single type. The one measures the amount of infrared light which depends on carbon dioxide level.The other part “Reference” measures the amount of infraredlight which is not affected by any gases.

The Reference plays a role of a calibrator to the changes in external conditions and it makes the sensor very stable for a long time without manual calibration.

Sensors with dual type have excellent stability, both in terms of time and temperature. The Dual wavelength type is broadlyused for complying with IAQ.

Single Wavelength Type Dual Wavelength Type

CO2 gas molecular Gas molecular except CO2

FilterIR Detector

IR Lamp

CO2 gas molecular Gas molecular except CO2CO2 gas molecular Gas molecular except CO2

0~2000ppm, ~5000ppm, ~10000ppm±(4%FS+3%Reading)< 40 sec1.5 sec

■ MeasurementMeasuring range optionsAccuracy *Response time ( )Measurement time interval

< 2 min-40~70℃0.2% FS / ℃< 30g

■ GeneralWarm up timeStorage temperatureTemperature dependenceWeight

82mm × 44.5mm × 18 mm72mm±0.2mm (Φ3.5mm)

Length × Width × HeightHoles

■ Dimensions

TemperatureHumidity

■ Operating Conditions0~50℃0~95%RH (Non-condensing)

Power supplyPower consumptionAnalog OutputsCommunication

■ Electrical8~14VDC70mA average0(1)~4VDC / PWMUART (38,400bps)

* A cover is optional.

CO2 Sensor Module for OEM Application

KCD-AN100x KCD-AN300x

< 2 min-40~70℃0.2% FS / ℃< 30g


TemperatureHumidity


Power supplyPower consumptionAnalog outputsCommunications

■ Electrical14~24VDC70mA average4~20mA, 0~10VDC, 0~5VDC(optional)UART (38,400bps)

70mm × 44.5mm × 18 mm63mm±0.2mm (Φ3.5mm)93mm × 53mm × 28 mm84mm±0.2mm

Length × Width × HeightHolesLength × Width × HeightHoles

■ Dimensions


■ MeasurementMeasuring range optionsAccuracy *Response time ( )Measurement time interval

τ63τ63

ㆍEasy application to ⇒ Environment management system, Air conditioning system, Indoor ventilation system, Securing devices of combustors

ㆍExcellent stability and accuracy ⇒ through teesting and calibration with sophisticated process and techniques

* Under conditions of calibration facilities of production factory, @25℃, intermediate value of detected ranges.※ Specifications and images may change without prior notice.

* Under conditions of calibration facilities of production factory, @25℃, intermediate value of detected ranges.※ Specifications and images may change without prior notice.

Module

Module(W/Case)

■ Measurement0~2000ppm, ~5000ppm, ~10000ppm±(4%FS+3%Reading)< 40 sec1.5 sec< ±5%FS / 2yr (@general conditions)

Measuring range optionsAccuracy *Response time( ₆₃ )Measurement time intervalLong-term Stability

■ General< 2 min-20~60℃0.2% FS / ℃< 30g

Warm up timeStorage temperatureTemperature dependenceWeight

■ Operating ConditionsTemperatureHumidity

0~50℃0~85%RH (Non-condensing)

■ ElectricalPower supplyOutput signalCommunication

24V AC/DC±15%4~20mA (< load 500Ω )UART (38,400bps)

< 2 min-40~70℃0.2% FS / ℃< 30g


TemperatureHumidity


93mm × 53mm × 28mm (w/CASE)84mm±0.2mm (Φ3.5mm)

Length × Width × HeightHoles

■ Dimensions72mm × 55mm × 18mm Length × Width × Height

■ Dimensions


■ MeasurementMeasuring range optionsAccuracy *Response time ( ₆₃)Measurement time interval

CO2 Sensor Module for OEM Application

KCD-AN400x KCD-AN500x

ㆍSENSECUBE CO2 sensors with Dual wavelength type get a small deviation unlike Single wavelength type. So they keep long term stability.

ㆍEasy application to ⇒ Environment management system, Air conditioning system, Indoor ventilation system

※ The design of real products may differ from above image. Please check it before ordering.

* Under conditions of calibration facilities of production factory, @25℃, intermediate value of detected ranges.

※ Specifications and images may change without prior notice.




Power supplyPower consumptionOutputCommunication

■ Electrical8~14VDC50mA averagePWM(period 1004ms)UART (38,400bps)

ττ

Featuresㆍ Slim design, Colored Aluminumㆍ Easy to mountㆍ High brightness LED(7-Segment)ㆍ Selecting temperature ℃/℉ㆍ Setting CO2 level to close relay contacts (for alarm, ventilation...)ㆍ Setting CO2 level to flick displays and sound buzzerㆍ Monitoring CO2 level at remote sites with RS485 communication ㆍ Auto changing the brightness of display depending on indoor illumination ㆍEasy application to ⇒ Various Indoor sites (classrooms, stores, offices, hospitals, fintness center, theaters, etc)

Dual Wavelength NDIRPT0~2,000ppm, 0~5,000ppm, 0~8,000ppm, 0~10,000ppm-10~50℃ (14~122℉)1.5 sec

■ MeasurementCO2TemperatureCO2

Temperature

Sensing Method

Measuring rangeoptions

Measurement time interval

TemperatureHumidity


Power supplyOutputs

Communication

■ Electrical9VDC, 1.5A external adapterCO2 display, Temperature displayRelay SPST, BuzzerRS485

460mm × 220mm × 40 mmWidth × Depth × Height■ Dimensions

0~2000ppm, ~5000ppm, ~10000ppm-10~60℃ (option)0~99% RH (option)±(4%FS+3%Reading)±2℃±3 %< 30 sec

CO2 Sensor Module (2%,5%,10%,20%)

Diffusion aspirated model2%, 5%, 10%, 20%±(3%FS+2%Reading)< 65sec0.75 sec

■ MeasurementModel typeMeasuring range optionsAccuracyResponse time ( )Measurement time interval

< 3 min-40~70℃0.2% FS /℃

■ GeneralWarm up timeStorage temperatureTemperature dependence

TemperatureHumidity


ㆍNDIR type uses optical property to measure CO2 gas. We make up for a controller not to be affected by a shock and a vibration. But please consult with us if you use it under harsh environments.ㆍEasy application to ⇒Test facilities, Cell incubators, CO2 Chambers, Environment monitoring & controlling system.

KCD-HFKCD-HC

τ63

45mm53mm

3.3mmφ4-

45mm

53mm

45mm53mm

3.3mmφ4-

45mm

53mm

49mm

23mm

for 3.0mm I.D tubing

53mm

23mm


■ Electrical8~15VDC 70mA average0~5VDC RS485

Flow through model2%, 5%, 10%, 20%±(3%FS+2%Reading)< 65sec0.75 sec

■ MeasurementModel typeMeasuring range optionsAccuracyResponse time ( )Measurement time interval

< 3 min-40~70℃0.2% FS /℃

■ GeneralWarm up timeStorage temperatureTemperature dependence

TemperatureHumidity


τ63


■ Electrical8~15VDC 70mA average0~5VDC RS485

■ Dimensions ■ Dimensions

※ Specifications and images may change without prior notice.※ The recommended calibration interval of NDIR Type sensors is one year under operating conditions.




CO2 Sensor Probe (1%,10%,20%)

ㆍNDIR type uses optical property to measure CO2 gas. We make up for a controller not to be affected by a shock and a vibration. But please consult with us if you use it under harsh environments.ㆍEasy application to ⇒Test facilities, Cell incubators, CO2 Chambers, Environment monitoring & controlling system.


KCD-HP200x,300xKCD-HP100x

< 2 min-40~70℃0.2% FS /℃

■ General

Warm up timeStorage temperatureTemperature dependence

TemperatureHumidity

■ Operating Conditions


Φ43mm × 161mm1m

ProbeCable

■ Dimensions

0~1% (2000ppm, 5000ppm)±(3%FS+2%Reading)< 65 sec0.75 sec

■ Measurement

Measuring range optionsAccuracy*Response time( )Measurement time interval

τ63

< 2 min-40~70℃0.2% FS /℃

■ General

Warm up timeStorage temperatureTemperature dependence

TemperatureHumidity

■ Operating Conditions


Φ43mm × 91mm1m

ProbeCable

■ Dimensions

0~10%, 0~20%±(3%FS+2%Reading)< 65 sec0.75 sec

■ Measurement

Measuring range optionsAccuracy*Response time( )Measurement time interval

τ63


■ Electrical16~28VDC70mA average0~5VDC, 0~10VDC, 4~20mARS485


■ Electrical16~28VDC70mA average0~5VDC, 0~10VDC, 4~20mARS485




Oxygen gas monitor

SM-2000 SM-2200

■ Specifications Features ㆍ Data storage & Downloading to PC up to 50,000 dataㆍ Automatic & manual calibration ㆍ Alarming at set value (Max, Min)ㆍ Holding Max, Min valueㆍ PC link with USB 2.0ㆍ Rechargeable battery ㆍ Plug-in Type Oxygen sensorㆍ Dot matrix graphic LCDㆍ 11 Languages available

ApplicationㆍMeasuring indoor oxygen levelㆍMeasuring oxygen level in working placeㆍMeasuring and analysing oxygen level in sealed rooms

※ Specifications and images may change without prior notice.※ Oxygen cell is Plug in Type so you can replace an old cell into a new one easily.

SM-2100

CO2 monitor Oxygen sensor module

KCD-1047x

90

Measuring principleMeasuring rangePower supplyOutput signalResolutionLinearityResponse timeOperating temperatureStorage temperatureExpected life

Electrochemical diffusion (Galvanic cell)0 ~ 99.9 Vol.% 24VAC/DC (Option : 12VDC)4~20mA / 0~10 VDC0.00824% (12bit AD)0.999(R) F.S (25℃, 1 atm)30 sec ( )10~45℃, 0~95%RH(Non-condensing)-20~60℃2 yrs at 20.9% in open air (25℃, 50%RH)

■ Specifications

■Wiring Functions24VAC / DC(+)24VAC / DC(-)Signal GroundOutput 4~20mAOutput 0~10VDCCalibration

Terminal type G+ G- M

Out1 Out2

Cal.

■Dimensions (except for connector’s size)

Defalut length of link wire between a sensor and a rectangle body is 50cm.

45mm53mm

3.3mmφ4-

45mm

53mm



29mm

Measuring MethodsㆍCO2 : Dual wavelength NDIRㆍTemperature(Option) : NTCㆍHumidity(Option) : SemiconductorFeatures ㆍ Data storage & Downloading to PC up to 50,000 dataㆍ PC link with USB 2.0

320mm x 80mm x 40mm



Head Quarter. R&D Center

#804, Ace twin tower2, 212-30Guro3-dong, Guro-gu, Seoul, KoreaTel . +82-2-2109-8877Fax. +82-2-2109-8878

[email protected]

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principle of ndir co - sensor+test · 2011. 1. 7. · principle of ndir co2 sensors the...

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