READ ON DEMAND
When this function is selected, (“General Menu” - “System Functions” - “Manual commands” - “Read
On Demand”) a new chlorine measuring cycle is immediately started.
This command is useful when calibrate or whenever an immediate result is needed.
Note: The read on demand function is active only when the analyzer is in automatic mode.
DIRECT READ
For rapid diagnostics of the measuring cell, the converter readings for dark (cell LED off) and blank
(cell LED on) could be consulted.
To display the dark reading activate the “General Menu” - “System Functions” - “Dark Read” function.
After confirmation the dark value is displayed.
To display the blank reading activate the “General Menu” - “System Functions” - “Blank Read”
function. After confirmation the blank value is displayed.
If the cell work correctly, the values must be between -20000 and 20000 with a minimum difference
blank – dark of 20000 converter points.
SYSTEM ERROR RELAY
The
PCA320
-
PCA340
controller has a single system error relay for all measured parameters.
To allow chlorine errors to activate the relay, set “Chlorine Menu” - “Alarm&Err Chlorine” -
“Err.Relay” to Active.
For pH errors set the item “pH Menu” - “Alarms&Err pH” - “Err. Relay” to Active.
For ORP errors set the item “ORP Menu” - “Alarms&Err ORP” - “Err. Relay” to Active.
For temperature errors set the item “Temperature Menu” - “Alarms&Err Temp.” - “Err. Relay” to Active.
Manual Commands
Dark Read
Blank Read
Change Pass: 0000
The display will show “MANUAL” on the first line when in the measurement panels. The displayed
values will be the last measured ones and the measuring sequence is stopped.
When in manual mode the ALARM LED is always on (no blinking).
WORKING MODE
38
