How are the dust concentrations presented on the instrument?
The Microdust pro incorporates a 128 x 64 pixel graphical backlit display. Dust concentrations are presented in two ways: · Numerical values – instantaneous concentrations are displayed on the screen in large numerals, as well as a value for the Time Weighted Average (TWA) that is calculated from the moment the instrument is switched on. This value can be reset at any time by a “one button” reset. Maximum concentrations are also displayed in this way. · Graphical representation – the Microdust pro is the first real time particulate measuring instrument to have a scrolling graph of dust concentrations (figure 11). The graph is able to show a continuous trace over a number of time bases. These may be set on the X-axis at 100 seconds, 200 seconds, 15 minutes and 1 hour. The Y-axis range may be auto-ranging or fixed.
