One Minute Read: Gas Monitoring

Sampling particles in a compressed gas poses different challenges.

Firstly, most gases are readily available in compressed state, with pressure that is much higher than ambient pressure. As a result, prior to measuring the particle in these gases, there will be a need to bring down its pressure using a high-pressure diffuser.

Next, all aerosol particle counters are calibrated using ambient air as a media. Ambient air, however, is in fact a mixture of different gases. As these gases possess different molecular weight, sampling them without correction will result in either over- or under-representation of the number of particles in the sample.

With the Lasair® Pro aerosol particle counter launched by Particle Measuring Systems (PMS), user can now sample gases with peace of mind using Lasair® Pro’s new gas sampling feature which allows users to simply select the type of gas they are sampling and attain error free results as the particle counter adjusts its setting as well as air flow accordingly.