Hanna Instruments HI 121 - Manual (Page 38)

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A u t o H O L D
To freeze the first stable reading on the LCD press 2nd then AutoHOLD
key, or simply AutoHOLD from the left keyboard while the instrument is in
measurement mode. The “Auto” ”HOLD” tags will be displayed blinking on
the LCD until the reading will stabilize.
When the reading is stable, the “Auto” “HOLD” tags stop blinking and
the reading is frozen.
Press 2nd then AutoHOLD key again, or simply AutoHOLD from the left
keyboard to return to normal measurement mode.
Note: Pressing MODE or the specific range keys from the left keyboard, the
instrument will skip to the displayed range, without leaving
AutoHOLD mode. The LOG key also holds AutoHOLD mode.
Pressing 2nd then SET, GLP or RCL key, the instrument leaves
AutoHOLD mode and performs the selected function.
Notes: • The “LdM” message on the secondary LCD shows that data
has been stored in Log on demand mode.
• Pressing 2nd then SET key, the instrument toggles between lot
number, record number (Log on demand only) or all lots.
• Press CLR or 2nd then CLR to delete the selected lot/record or all lots.
Note: Positions remain free in the Log on demand lot by deleting the last
logged samples or all the lot.
• If “dEL ALL” option was selected, all logged data is deleted and the
instrument returns to measurement mode.
Press RCL at any time to return to measurement mode.