Hanna Instruments HI 23 Series, Instruction Manual, Page: 7 / 60

7
FUNCTIONAL DESCRIPTION
1. Liquid Crystal Display
2. CAL DATA key
last calibration data viewing (enters and exits)
3. LCD key exits from setup and reverts back to normal mode (in idle
or control phases with the measurement on the display).
During EC/TDS calibration, it alternates EC/TDS buffer
value and current cell constant on the display. In
HI 24
series, it switches between EC and TDS reading
4. CAL key initiates and exits calibration mode
5. SETUP key enters setup mode
6.
ð
key moves to the next digit/letter (circular solution) when se-
lecting a parameter. Same as
ñ
key during last calibration
data viewing mode
7.
ñ
key increases the blinking digit/letter by one when selecting a
parameter. Advances forward while in last calibration
data viewing mode. Increases the temperature setting
when temperature probe is not inserted
8. CFM key confirms current choice (and skips to the next item)
9.
ò
key decreases the blinking digit/letter by one when selecting
a parameter. Reverts backward while in last calibration
data viewing mode. Decreases the temperature setting
when temperature probe is not inserted
10. LEDs