Hanna Instruments HI 121 - Manual (Page 34)

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This feature allows the user to log pH and Rel mV or ISE and Rel mV
measurements, together with temperature automatically. All logged data
can be transferred to a PC through the RS232 port.
The maximum logging space is 1000 record locations (samples) on each channel.
This can be divided in 1 up to 50 lots (one lot can use all the free space). The lot
ID (number) is between 1 and 99 (after 99 it restarts from 1). Only up to 50 lots
can be memorized at one time, even if there is free space available.
Note: When the logged lots are more than one, the total number of
samples can be less than 1000, even with full memory, due to the
fact that logging memory is divided in pages of 20 samples each.
The appropriate logging interval can be set from 5 seconds to 180 minutes (see
SETUP for details, page 30).
Up to 100 record locations are also provided (50 on each channel).
LOGGING THE CURRENT DATA (LOG ON DEMAND)
To store the current reading into memory, press LOG
while in measurement mode.
The instrument will display the current date (mm.dd) on the primary LCD,
the record number on the secondary LCD, the “LOG” tag blinking for a few
seconds and then the free locations number.
If there are less than 6 memory locations remaining, the record number
and “Lo” message will blink for a few seconds to alert the user and then
the free locations number is displayed on the LCD.
L O G G I N G
LOG
The AutoLOG will be started in according with “Strt” item, from button
(“btn”) by pressing AutoLOG or when the starting time condition is reached.
The AutoLOG will stop in according with the selected option for “AutoLOG
End Condition” item or when AutoLOG is pressed.