YSI 63 - Manual (Page 13)

9
.4.01
pH
SLOPE
CAL
24.8
°C
Second buffer value
Left decimal flashes (until
reading is stable) for buffers
lower than first cal point
If the second pH buffer is less than the first buffer (which was used to adjust the offset; pH 7 or
pH 6.86), the left decimal point will flash as shown above. If the second pH buffer is greater
than the first, the right decimal point will flash as shown below.
10.0.0
pH
Second buffer value
SLOPE
CAL
24.8
°C
Right decimal flashes (until
reading is stable) for buffers
higher than first cal point
11. When the reading is stable (does not change by 0.01 pH in 10 seconds), the decimal point
will stop flashing. Press and hold the ENTER key to save the first SLOPE. The Model 63
will flash SAVE on the display along with SLP to indicate that the first slope value has been
saved.
SAVE
SLP
12. SLOPE will start flashing again indicating that the slope is ready to be set using a third pH
buffer.
.4.01
pH
SLOPE
CAL
24.8
°C
Flashing
13. The system is now calibrated at two points. If you are only performing a two point
calibration, press the MODE key to return to normal operation.
14. Rinse the probe with deionized or distilled water, then carefully dry the probe.
STOP HERE IF PERFORMING A 2-POINT CALIBRATION.