TROLL 9500 Operator's Manual - Geotech Environmental Equipment

Section 5: ProfilingThe profiler can graph up to 300 readings. A range slider (scroll bar)on the right side of the graph allows you to change the range of visibledata. Like the channel display, the graph will be continuously updated.A range slider at the bottom of the graph lets you zoom in on a narrowertime period.To switch back to the display of active channels, click Meter.Profiling Dissolved Oxygen• Readings are updated approximately every 2 seconds as theProfiler cycles through the available channels in turn.• The currently selected measurement unit is shown below eachreading.TIP: You can use the Setup option to change the Profiler’sreading rate and/or the displayed units. See Customizing theProfiler later in this section for details.• A window without a reading indicates the channel is not available toread, usually because there is no sensor installed in the port.TIP: If a channel you wish to see is not displayed, click the