User Guide

13
FUNCTIONAL DESCRIPTION HI 8424
1) BNC socket for combination pH or ORP electrodes.
2) Liquid Crystal display (LCD).
3) RANGE to select the pH, °C or mV range.
4) UP arrow to set temperature manually when temperature
probe is disconnected.
5) CAL to enter calibration mode.
6) Phono plug socket for temperature probe HI 7669AW.
7) ON/OFF to switch the instrument on or off.
8) DOWN arrow to set temperature manually when
temperature probe is disconnected.
9) CFM to confirm calibration data.
44
DISPLAY CODE GUIDE
HI 8014, HI 8314, HI 8424, HI 8915, HI 9214 AND
HI 9622
°C Symbol indicates the meter is in temperature mode. A flashing
°C symbol in HI 8424 and HI 9622 means that the tempera-
ture probe is not connected or the cable is damaged
pH Symbol indicates the meter is in pH mode.
HI 8014, HI 8314, HI 8424, HI 8915 AND HI 9622
mV Symbol indicates the meter is in mV mode.
HI 8424
E1 Out of range in pH scale
E2 Out of range in °C scale
E3 Out of range in mV scale
E4 Erroneous buffer solution used for offset calibration or out of order
electrode
E5 Erroneous buffer solution used for slope calibration or out of order
electrode
HI 8915
S Symbol to indicate the display is frozen (Hold function).
HI 9214 AND HI 931000
∆∆
∆∆
∆ Stability indicator
Ec Wrong buffer: Change the buffer solution;
Unfit electrode: Clean and condition the electrode.
Eb Low battery: Replace the battery.
Er Over-Range: Dry electrode, repeat conditioning.
HI 9622
pH---- Out of range in pH scale
mV---- Out of range in mV scale
Er-7 Erroneous pH 7 buffer solution used for offset calibration or
out of order electrode
Er-4 Erroneous pH 4 buffer solution used for slope calibration or
out of order electrode
Er-10 Erroneous pH 10 buffer solution used for slope calibration or
out of order electrode
BAT Low battery