Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.
Pressure and Air Sampling
If water damage has occurred inside your home, especially to the drywall, a remediation company will probably suggest sampling the air to determine if hazardous mold has developed. The process can be rather straightforward and simply consists of pumping a specific volume of air near the area of concern into a container for laboratory analysis. For lower cost, the volumetric sample is obtained by timing a specific airflow for a fixed amount of time. Then the sample can be submitted to an offsite lab.
In addition to mold spores, air sampling also can be performed for pollen, insect parts, skin cell fragments, fibers such as asbestos, fiberglass, cellulose, clothing fibers) and organic particulates including ceramic, fly ash, copy toner and more.
In a work or potentially hazardous environment, verifying compliance to regulations on a periodic or even continuous basis can dictate much more accurate and precise readings. In digitally controlled pumps, a built-in airflow indicator can allow adjustment of the airflow from a few (5) to several 1000 (typically 4000 to 5000)ml/min.
SKC’s Pocket Pump displays airflow and pressure and has both constant flow and constant pressure modes. In this case, the pressure is 28.94 inches of mercury (inHg).
For air sampling equipment, All Sensors TLAX Series 4 to 20 mA Output Transmitter can provide the necessary accuracy as well as improved overall long term stability. The sensors have operating pressure ranges of 0.5 to 30 inH2O differential and gauge and 1 to 150 PSI differential and gauge.
Do you have a pressure sensing question? Let us know and we’ll address it in an upcoming blog.
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