26
Second Calibration Point
Immerse the probe into the second buffer solution. The
Calibration value
will
automatically be adjusted based on the selected buffer and temperature if the
selected buffer set is USA or NIST.
Observe the
Actual Readings
for stability (no significant change for 40 seconds),
then select
Accept Calibration
. “Ready for cal point 3” will be displayed in the
message area.
To complete only a 2-point calibration, select
Finish Calibration
. “Calibration
successful!” will be displayed in the message area at the bottom of the screen and
the handheld will beep before you are returned to the Calibrate Menu.
Third Calibration Point
Immerse the probe into the third buffer solution. The
Calibration value
will
automatically be adjusted based on the selected buffer and temperature if the
selected buffer set is USA or NIST.
Observe the
Actual Readings
for stability (no significant change for 40 seconds),
then select
Accept Calibration
. “Calibration successful!” will be displayed in the
message area at the bottom of the screen and the handheld will beep before you
are returned to the Calibrate Menu.
If the buffer set selected is
Off
(see ISE Sensor Setup), the calibration procedure
will continue until
Finish Calibration
is selected or the pH sensor has been
calibrated to 6 calibration points
ORP Calibration
Obtain a premixed standard solution that is approved for use with Ag/AgCl ORP
sensors or prepare a standard with a known oxidation reduction potential (ORP)
value. Zobell solution is recommended.
From the Calibrate Menu, highlight
ISE (ORP)
and press enter.
If using YSI Zobell solution, the
Calibration value
will automatically be adjusted
based on the temperature. Otherwise, refer to the table included with the
standard solution and enter the mV value that corresponds to the temperature of
the solution.
Observe the
Actual Readings
for stability (no significant change for 40 seconds),
then select
Accept Calibration
. “Calibration successful!” will be displayed in the
message area at the bottom of the screen and the handheld will beep before you
are returned to the Calibrate Menu.
Figure 42
Calibrate pH
(Second or third point)
Figure 43
Calibrate pH
(Second or third point)
03/03/20 10:34:42 AM
Calibrate ISE1 (pH)
100%
Calibration Value [7.00]
Accept Calibration
Finish Calibration
7.34 pH
P.C.V. 7.00 pH
Calibration successful!
Press ESC to Abort
Last Calibrated
03/02/20 07:23:20AM
Actual Readings
22.6 Ref °C 155.9 pH mV
03/03/20 10:34:42 AM
Calibrate ISE2 (ORP)
100%
Calibration Value [234.5]
Accept Calibration
225.5 ORP mV
Post Cal Value
Calibration successful!
Press ESC to Abort
Last Calibrated
03/02/20 07:23:20AM
Actual Readings
22.3 Ref °C
234.5 ORP mV
