PM 10 and PM 2.5 (CAAQMS)

Veritcal View
PM 10 and PM 2.5 (CAAQMS)
Working Principle / Technology Beta Attenuation
Measuring Range 0-10, 0-100, 0-1000 μg/ Nm3
Sampling Time Continuously sampling
Sample flow rate 16.5 Liters/minute
Filter Tape size Manual Calibration Performed check with Zero and Span filters
Span Check 14C (carbon-14), 60 µCi ±15 µCi (2.22 MBq)
Beta Source -30° to +55° C
Operating Temperature Range 0 to 90% RH, non-condensing
Operating Humidity Range 0-1 V, 4-20mA
Analog Output RS 232
Digital Output RS 485
Model Name V-air 9009

PM 10 and PM 2.5 

The Vasthi PM 10 and PM 2.5 Particulate Matter Monitors work The Principle of Particulate Matter 10 Analyzer uses the following technology: Ambient particulate matter, beta-ray detector for measuring the concentration of particulate matter whose aerodynamic equivalent diameter is smaller than 2.5/10 m on rolled filter tape The instrument uses low-radiation C14 as the radioactive source. The emitted ray passes through the filter membrane with contaminants and will be received by the detector. The detector [1] is composed of a photomultiplier tube (or Geiger detector), a plastic scintillator, and a counter. The thickness can be analyzed quantificational according to β-ray energy that the detector received, and then the PM 10 and PM 2.5 concentrations in the air can be calculated received, and then the pm 2.5 and pm 10 concentrations in the air can be calculated.


  • Completely IndigenousDesign
  • 7" TFT Touch Display
  • In-built Data Storage 
  • Error indications like flow, pressure, filter paper, and detector error indication
  • User-friendly Calibration check with know concentration
  • In-built Datalogger to push the data to the cloud-based server 
  • E-mail alerts for error indications. 
  • Digital Outputs 
What is the working Principle of the V-air 9009 series?

The V-air 9009 series operates using Beta Attenuation Technology.

What is the National Standard & UE EPA approved / compliance Technology for measuring Particulate Matter?

Beta ray Attenuation Monitoring (BAM) technology.

How much time does it take for one measurement?

Usually, in European states, pollution levels are very low, so they collect the sample continuously for 40 minutes at 16.5 liters/minute and make an average. For Indian conditions, we can measure as per user requirements, time, or pollution possibilities.

How frequently do we need to change the filter tap?

45 days @ 1 hour per sample.

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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