Hanna Instruments HI 221 - Manual (Page 19)

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Otherwise the instrument will display log data on the primary LCD and the
last stored record number on the secondary LCD, along with the “LOG” and
the “RCL” tags.
Note: The “LOG” and “RCL” tags remain on LCD while instrument is in the
viewing logged data mode.
Press the RCL key at any time to return to measuring mode.
Press the ARROW keys to scroll between same parameter for different records,
while pH, mV, temperature, “Hour”, “Year”, “oFFS”, “SLoP” or “dEL record”
is displayed:
or to scroll between different dates while “dAtE” or “dEL date” is displayed.
Press the RANGE key and the instrument will display the next logged
parameter, as follows:
•The mV value on the primary LCD and the record number on the secondary
LCD.
•The temperature value on the primary LCD and the record number on the
secondary LCD.
•The time on the primary LCD and the “Hour” message on the secondary
LCD.
LOG RCL