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PH220-en-US_v3.5 3/21
Storing and Recalling Readings
This instrument can store up to 25 measurement readings. Readings are saved even after the
instrument has been turned off.
STORE Readings
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 LCD area.
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
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 the 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 (Clear) Readings
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 the normal operation mode.
Temperature Offset Adjustment
This instrument allows you to offset the temperature display by ±9
o
F (±5
o
C):
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; use the MODE button to increase it.
4.
Press and hold the STORE/RECALL button for 2 seconds to exit. 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.
