Hanna Instruments HI 121 - Manual (Page 7)

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RCL LOG
MODE
CHANNEL CFM CAL
Calibration Check
pH / mV / ISE Meter HI 121
HI 121
MAIN KEYBOARD ON THE RIGHT
1) CAL key, to enter and exit/escape calibration mode.
SET key (second function), to enter/exit SETUP mode.
2) CFM key, to confirm different values.
GLP key (second function), to display Good Laboratory Practice Information.
3) CHANNEL key, to select the measurement input channel, pH or ISE.
CLR key (second function), to clear calibration or logged data.
4) key, to manually increase temperature value or other parameters.
AutoHOLD key (second function), to freeze the first stable reading on
the LCD.
5) key, to manually decrease temperature value or other parameters.
AutoLOG key (second function), to start/stop AutoLOG mode.
6) MODE key, to select the measurement unit or to switch focused data.
7) 2nd key, to select second key function.
8) LOG key, to store measured data.
9) RCL key, to enter/exit view logged data mode.
Note: To select second key function, press 2nd and then the desired key.
The “2nd” tag will appear on the LCD until the desired key is
pressed. To leave second key function selection, press 2nd again.