Hanna-instruments PCA 310 Manual de usuario descargar pdf (Pagina 35)

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 imme-

diate 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 read-

ings 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 confirma-

tion the dark value is displayed.

To display the blank reading activate the “General Menu” -

“System Functions” - “Blank Read” function. After confirma-

tion 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 PCA 320-330 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

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Hanna-instruments PCA 310 Manual de usuario Pagina 35