Hanna Instruments HI 98188 Instruction Manual page 43

The meter informations are displayed:
-firmware version
-language version
-mV and temperature factory calibration time/date
-battery capacity
RANGE SPECIFIC PARAMETERS
Calibration Timeout
Focus on the Calibration Timeout item.
Press Modify.
Use ARROW keys to set desired value.
Press Accept to confirm or ESC to return without saving.
Note: If enabled "CAL DUE" warning will be displayed, the set number of
days after calibration is over passed.
Out of calibration range check
Focus on Out of cal range check item.
43