Fault Conditions And Selftest Procedures - Hanna Instruments HI 23 Series Instruction Manual

Note

FAULT CONDITIONS AND SELFTEST PROCEDURES

Note
• Press or to cycle through the data forward or backwards
respectively.
In any moment, by pressing LCD or CAL DATA the meter will
return to the regular operating display.
• Press or to view the time of last calibration. The sec-
ondary display will show "HOU".
• Press or again to view the cell con-
stant at the time of the last calibration.
The secondary display will show "CEL".
• Press or again to return to the first CAL DATA display
(date) at the time of last calibration.
The fault conditions below may be detected by the software:
• EEPROM data error;
• I2C internal bus failure;
• date lost;
• code dead loop.
EEPROM data error can be detected through EEPROM test proce-
dure at startup or when explicitly requested using setup menu.
When an EEPROM error is detected, to the user is given the
option to perform a reset of EEPROM.
When an EEPROM reset has been performed
the calibration data are reset to default (every
range). An intermittent CAL will blink on the
display to advise the user of this status.
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