Hanna Instruments PCA 310 - Manual (Page 12)

12
1 - measured value (chlorine, pH, ORP or temperature)
2 - measurement units (mg/L, pH, mV, °C or °F)
3 - current time in format HH:MM
4 - warnings, alarms and errors, displayed one at a time
5 - secondary information.
LEDs
Three or four LEDs are present on the front panel:
ALARM LED (red) , signals the presence of at least one alarm
and the closing of the Alarm relay. When the alarm is
present, the LED blinks. When the analyzer is in
MANUAL mode, the LED is on but not blinking.
DOSING CHLORINE LED (green), signals the closing of the
chlorine dosing relay. When dosing stops, the LED is
turned off.
DOSING ACID/ALK. LED (green), signals the closing of the
acid/alkali dosing relay. When dosing stops, the LED
is turned off (PCA 320 and PCA 330 only).
SYSTEM ERROR LED (red), signals the presence of an error
and the closing of the System error relay. When the
error is present, the LED blinks. When in STANDBY
mode, the led is on but not blinking.
For PCA 310 the system error LED is moved in the dosing
ACID/ALK. LED position.
KEYPAD
The keypad has 8 keys with the following signification:
UP and DOWN ARROWS
• select the main display appearance,
• select the menu,
• select an item from a list
• edit values.
ALARM
DOSING
CHLORINE
SYSTEM
ERROR
16:35
1.35 mg/L Alarm
Min:0.00
Max5.00
3 1 2
4
5
ALARM
DOSING
CHLORINE
DOSING
ACID/ALK.
SYSTEM
ERROR