Gas detector is also called gas alarm. When flammable or toxic gas leaks in the industrial environment, when the gas alarm detects that the gas concentration reaches the critical point set by the explosion or poisoning alarm, the alarm will send out an alarm signal to remind the staff to take safety measures. When purchasing and using, it is often seen that the detection unit of toxic gas is PPM, so what does PPM mean? The following staff of Yiyuntian will briefly talk about what PPM on gas detector means.

What is PPM?

the concept of PPM is similar to VOL, except that PPM represents one millionth of gas volume, for example, 10PPM carbon dioxide refers to 10 parts per million of carbon dioxide in air. since PPM unit is dimensionless, most gas detectors that can detect PPM level, are used to detect the working environment of gas micro-leakage, because the gas micro-leakage is very dangerous, long-term gas micro-leakage may cause a big accident, so we need to use PPM gas detector to timely eliminate micro-leakage place.

PPM is the volume concentration. Volume concentration representation: the number of pollutants contained in one million volumes of air, that is, PPM.

PPM is the 1 expression of solution concentration (solute mass fraction), and PPM means parts per million.

For solution: that is, there is 1/1000 ml of solute in 1 liter of aqueous solution, and its concentration (solute mass fraction) is 1PPM.

the above is what yiyuntian's staff shared with you about PPM. after knowing what PPM is, do you need to know something about its unit conversion? interested friends can pay attention to us and introduce the conversion of PPM units to you in the next issue.