8
2.4 LCD display
After initially applying power to the product, it will automatically enter run mode. If a clean
time has been set, a cleaning cycle will start. The current conductivity or TDS will then be
displayed or 0000 if a purge time has been set.
The display is divided into three sections:
-
Four large digits, displaying the process variable and control parameters (last digit is
blanked off or always reads zero).
-
Information line, displays the various control states and process units.
-
Three bar graphs, which shows a percentage of full scale:
-
PV Process Variable, the highest and lowest recorded value.
-
SP Set Point (line and arrow) and the hysteresis point (dotted line).
-
AL High Alarm level (line and arrow) with hysteresis point (dotted line).
100%
50%
0%
SP PV AL
3570
BLOWDOWN
Set point
Information line
Examples:
Units
ALARM STATE
Percentage scale
For bar graphs
10% steps
Alarm
Process variable
Fig. 2 Graphics display definitions
Parameter value
Example:
PV
Process variable
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