50
P
LOTTING
BATCHES
R
Use the arrows to scroll the cursor around the plot; as the cursor moves the current memory location
and reading are shown at the top right of the display. Large batches will scroll when the cursor
reaches the edge of the display.
Use the Zoom softkey to zoom in to areas of interest.
Press [
] at any time to view a key of the greyscale levels.
16.2 Plot options
Use this menu to select how readings will be displayed on
the plot.
MENU / DATA LOGGER / PLOT OPTIONS
Greyscale min/max
•
Black is set to the minimum reading in the batch.
•
White is set to the maximum reading in the batch.
•
Readings between the minimum and maximum are indicated by decreasing levels of grey.
Greyscale limits
•
Black is set to the batch low limit.
•
White is set to the batch high limit.
•
Readings between the low and high limits are indicated by decreasing levels of grey.
(To set limits, see
.)
If limits have not been set, the minimum and maximum readings in the batch will be used and this
option will show the same plot as ‘Greyscale min/max’.
Threshold view
A threshold value is set by the user. All readings below the threshold are displayed as black; all
readings above the threshold are displayed as white.
Set threshold
Set threshold values for cover (in mm or inches) and for half-cell (in mV), as required.
The thresholds are applied to all batches and are independent of any other limits which may be set.
Figure 26. Typical threshold plot (of half-cell potential)
1. Light area (
) - readings are above threshold value
2. Black area (
) - readings are below threshold value
PLOT OPTIONS
GREYSCALE MIN/MAX
GREYSCALE LIMITS
THRESHOLD VIEW
SET THRESHOLD
331.book Page 50 Thursday, March 12, 2009 9:46 PM
