Hanna Instruments HI 84431 - Manual (Page 11)

11
PERISTALTIC PUMP
Peristaltic pumps are self priming. Liquid never contacts the pump components. The titrant tubing
is pressed along the rotating rollers of the pump. The rollers compress the tubing, driving the
titrant to the dispensing tip.
1. Current time and instrument mode information (pH meter or Titrator)
2. pH electrode condition information
3. Main reading information
4. Instrument status information
5. Functional key area
6. Indicates that the displayed value can be changed using ARROW keys
7. Temperature value (
°C, °F )
8. pH temperature compensation mode (Manual or Automatic)
9. Stirrer and reading status area
GUIDE TO INDICATORS
During the instrument’s operation information is displayed on the LCD.
Displayed icons:
1
5
2
3
4
9
6
8
7
Unstable reading.
Stirrer on.
Pump running.
Parameter can be changed.