PureAire Monitoring Systems, Inc.
10/25/07
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5.1.5 Displaying Zero / Gain Settings
The Zero and Span values applied during calibration may be read on the front
panel of the LCD after exiting the Calibration mode. These values provide an
indication of how much sensor sensitivity has declined over time — the higher
the gain, the greater the degree of sensor sensitivity deterioration.
These values are displayed as follows:
1.
Exit the Calibration mode and wait for the one minute delay to end (the left
indicator arrow will stop flashing and remain unlit).
2.
Hold the magnet over the UP SPAN key. The amount of zero offset, in
percent of full-scale, will be displayed.
3.
Hold the magnet over the DOWN SPAN key. The amount of gain applied
will be displayed. This value will range between 0.5 and 2.0.
