The GFM436 has a built-in "Unattended Data Logging" facility. This allows the instrument to be
programmed to carry out repeated samples over a defined time period. This functionality is common
with the GFM426 instrument.
Further details can be found in Appendix C.
The View Readings Display is a display for viewing and deleting previously stored readings. The Up and
Down Keys scroll up and down and pressing the OK Key on IDs allows you to change the sample point
being viewed by pressing Left or Right. If an ID is not currently selected then pressing the Left or Right
Key will go to the previous or next reading in the currently selected sample point. The Left Soft Key,
labelled “Light”, switches the backlight on and off and the Right Soft Key, labelled “Exit”, returns to the
Gas Display. The Middle Soft Key, labelled “Delete”, will delete the currently viewed reading and show a
popup saying “Sample deleted” and the number of free readings available (i.e. the amount of store
space remaining).
See the diagrams on the following pages for more information.
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