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Phone
13910499766
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Address
Building 5, Guanghua Entrepreneurship Park, No. 18 Anningzhuang East Road, Haidian District, Beijing
Beijing Lijia United Technology Co., Ltd
13910499766
Building 5, Guanghua Entrepreneurship Park, No. 18 Anningzhuang East Road, Haidian District, Beijing

picture1 ICAD 200-DSeries,19Inch rack housing,OLEDdisplay.

picture2 ICAD 200-DMSeries, compact waterproof shell, suitable forMoving in the wildernessMeasurement.
ICAD(Iterative CAvity enhanced DOASIterative cavity enhanced differential absorption spectroscopy technologyNO2/NOx/NOmeasurement systemWithin the spectral range of~430-465 nmInternally adoptedDirect optical absorption spectroscopy. By measuring absorption spectra and applying themICADAlgorithms can directly identifyNO2Unique feature absorption structure, and combines it with water vapor(H2O)Or formaldehyde(CHOCHO)Wait for other overlapping absorption to distinguish. Make it have direct measurement capabilityNO2The advantage is that it does not interfere with other substances and does not require the introduction of new interferences(For example)CLD,CRD,CAPS)The drying mechanism. due toICADThe system does not rely on absolute strength, but on characteristic differential absorption structures, thereforeThere is no absolute zero drift, and the system is insensitive to temperature changes, vibrations, and light source attenuation. Therefore, it is suitable for long-term or mobile measurement. At the same time, the system passes throughNO→NO2Internal converter based on gas-phase titration(GPT)(optional) can also be measuredNOx/NOThis instrument does not require gas consumption and is easy to operate. The data display can be directly used forWiFiperhapsLANEquipment.
Patent:EP3329251,US15/748,923.
TECHNICAL INDEX
measuring range |
0-5000 ppb(Customizable) |
cross sensitivity |
not have |
Detection limit(@30 s) |
0.3 ppb |
power consumption |
< 30=''>,12 V (typ.) |
Accuracy(1σ @30s) |
0.15 ppbperhaps2% |
Start Time |
<1 min |
NO2detection |
directmeasure |
temperature range |
-10 – 40°C |
NOx/ NOdetection |
convert toNO2(GPT) |
temperature sensitivity |
< 0.01=''> |
Response time(10%-90%) |
2 s @ 1 L/minperhaps1 s @ 2L/min |
weight |
< 10=''> |
zero drift |
< 0.1=''>the moon |
size |
Waterproof:40×40 ×14 cm³ 19Inch rack mounted:48.3×38×14 cm³ |
sample flow |
0.5-2 L/min |
Consumable gas |
not have |
calibration |
Internal calibration, no need to calibrate gas |
Other gases |
H2O,CHOCHO,CO2 (optional) |
Absorption pathway characterization |
helium |
computer system |
Built in embedded systemPCData analysis and measurement software |
mechanical stability |
Not sensitive to vibration |
data communication |
LAN/WiFi/Machine2Machine/OPCUA;Bayern/Hessen (RS232);Simulate voltage/current output |
application
lNO2/NOxHigh precision measurement (scientific, research, atmospheric background pollution monitoring)
lUrban air quality monitoring (outdoor, street, tunnel, canyon, mobile measurement)
lindoor air quality monitoring
lEmission monitoring (such as chimneys)
lActual driving pollutants of vehiclesEmission measurement(RDE):OptionalCO2Sensors to obtain everyKmperhapskWhofNOx/NO2
theory of operation

ICAD NO2/NOx/NOMeasurement system flowchart and measurement principle.
advantage
advantage |
innovate |
High measurement accuracy |
•Direct measurementNO2 •High sensitivity and small measurement error •Adaptive measurement range •No zero or calibration drift, reproducibility100% •No interference •need notdryer |
Cost-effective |
•parallelNOMeasurement (with converter) •Simple yet powerful settings •No consumables (e.g. gas) •long service life •Quick response within seconds |
Simple operation |
•No gas calibration required •High stability (insensitive to impact, vibration, and temperature) •light weight •Low power consumption and12Vrun •Multiple data transmission interfaces(Machine2Machine、RS232Simulate voltage/Current) |
Origin: Germany