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PH220-EU-EN V3.2 8/12
6
Storing and Recalling Readings
This instrument has the ability to store up to 25 measurement readings. At a later time the readings
can be recalled and viewed. Readings are saved even after the instrument has been turned off.
STORE Readings
The steps below cover the STORE process in detail:
1. Take a measurement as described earlier in this manual.
2. Momentarily press the STORE/RECALL button to save the reading. The reading will be held
on the display (the HOLD and STORE icons will appear). In addition, the storage location (1 to
25) will briefly appear on the lower portion of the LCD.
3. Note: The temperature reading associated with the pH reading is also saved.
4. Press the STORE/RECALL button again to release the ‘hold’ feature. The instrument will then
return to normal operation.
5. Note that when all 25 storage locations are filled the instrument begins writing over the
previously stored data.
RECALL Readings
The steps below cover the RECALL process in detail:
1. Press and hold
the STORE/RECALL button until a number appears on the main display. This
number is the storage location for the most recent reading.
2. The number will switch off after 1 second and the stored reading will appear. The RECALL icon
will appear and remain on the entire time the recall mode is accessed.
3. While in the RECALL mode, use the STORE/RECALL button to scroll through the stored
readings. The most recent readings will show first (LAST IN – FIRST OUT).
4. Press and hold the STORE/RECALL button until the END display appears. Release the button
and the instrument will return to normal operation mode.
5. Note that if there are no readings in memory, the display will show END when the user
attempts to access the RECALL mode.
ERASE Readings
The steps below cover the ERASE (CLEAR) process in detail:
1. Press and hold STORE/RECALL and
the CAL buttons simultaneously for 4 seconds.
2. The ‘CLr’ display will appear indicating that all readings have been erased.
3. Release the buttons to return to normal operation mode.
Temperature Offset Adjustment
Applications may arise where it is desirable to offset the instrument’s temperature display. This
instrument allows a temperature display offset adjustment of ±9
o
F (±5
o
C). To do so, follow the steps
below:
1. Press and hold the CAL, MODE, and STORE/RECALL buttons simultaneously for 6 seconds.
2. The main display will indicate the current offset. The lower display will show ‘t_O’.
3. Use the CAL button to decrease the offset value and the MODE button to increase it.
4. Press and hold the STORE/RECALL button for 2 seconds to exit this mode. The instrument
will display ‘SA’ (save) and ‘END’ before returning to the normal operation mode.
5. The temperature display will now indicate the actual temperature ± the offset value.
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