These values, which can be determined exactly to within ± 10 ppm, are then presented as clearly visible figures on a large, backlit display. As many as 10 metered values can be stored directly in the BG20’s onboard memory.
Even critical levels can be checked quickly and easily thanks to the integrated alarm function. If the values exceed 35 ppm, then the measuring device warns the user automatically via an acoustic warning tone which sounds at increasingly short intervals the higher the concentration gets, before developing into a permanent warning tone as soon as a value of 200 ppm is exceeded.