Ambient NOx Gas Analyzer (CAAQMS)

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Ambient NOx Gas Analyzer (CAAQMS)
Measuring items Nitrogen Oxides(NO/NO2/NOx) in ambient air
Measuring method Chemiluminescence method (CLD)
Ranges 0-0.1 / 0-0.5 / 0-1 ppm (selectable)
Lower Detectable Limit Less than 0.5ppb
Repeatability within 1% of span gas concentration
Zero drift Less than 1 ppb
Span drift within 1%/full scale (1 day)
Response time(95%) Less than 60 seconds (T95)
Linearity within 1%/full scale
Precision within 0.2% of reading or 0.5ppb
Ambient temperature 5 - 40 C
Particulate filter 47mm Teflon filter
Certified US EPA

NOx Analyzer

Vair-9002 NOx Analyzer is the analyzer that measures the minimum amount of NOx(NO, NO2) in the air at the same time using Chemiluminescence.

03 Generator used for Vair-9002 is designed for strong durability with no failure for a long time and the NO2 —NO Converter for measurement of NO2 is equipped with highly efficient cartridge material which improves the change rate near 100%. All temperature adjustment systems such as response cells, Converter, PMT, TEMP, etc are designed to be entered in the self software which is easy to use.

All gas analyzers of the Vasthi series were equipped with screen interface design using TFT—LCD & Touch screen so that the user can operate the analyzer and maximize the visual image, and MCU applied to the analyzer is ARM11 32bit processor and operates based on Linux Kernel 2.6 which maximizes the system stability due to multiprocessing.

In addition, the analyzer is equipped with an automatic zero correction system (Auto Zero) for smooth measurement and various interfaces (Ethernet, RS232, RS485, USB, DIO, Analog out) so that users can use it more conveniently and usefully.




  • Ranges 0-0.1 / 0.5 / 1 ppm, user selectable. 7inch TFT LCD & touch screen interface.
  • Ethernet, RS-232, RS-485 & USB ports.
  • USB interface utilizes for System Program Update.
  • Temperature & pressure compensation
  • Internal zero(optional)Stored data can be retrieved RS-232, USB Inter, face and TCP/IP network
  • Inbuilt Data Logger Utilizes NAND-Flash to Store up1 year


Get in Touch

Have a question about our Device? Don’t hesitate to contact us directly using the form on this page or by visiting our office.


Ph. +91 7337418685

Manjeera Trinity Corporate,
Plot No-112, Survey No:1050,
JNTU, Hitech city Rd, KPHB Colony
Kukatpally, Hyderabad-500072

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