Hanna Instruments HI 121 - Manual (Page 8)

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NUM Resolution ISE
RelmV mV pH
AutoLOG
Paper Print AutoHOLD
HI 123
KEYBOARD ON THE LEFT
Shortcuts to alternate functions
1) AutoHOLD key, to freeze the first stable reading on the LCD.
2) Print key, to obtain a printout or to cancel printing.
3) Paper key, to pull out the paper.
4)
key, to toggle between parameters while in RECALL or SETUP
modifying mode (backwards), to toggle between absolute mV and
temperature while in Relative mV mode and between pH buffer and
temperature while in pH calibration mode.
5) AutoLOG key, to start/stop AutoLOG mode.
6)
key, to toggle between parameters while in RECALL or SETUP
modifying mode (forwards), to toggle between absolute mV and
temperature while in Relative mV mode and between pH buffer and
temperature while in pH calibration mode.
7) pH key, to select pH channel.
8) mV key, to select mV range.
9) RelmV key, to select Relative mV range.
10) ISE key, to select ISE channel.
11) Resolution key, to select pH resolution.
Numerical keys
10)
key, to change sign.
12) NUM key, to activate the numerical keys (0 to 9).