40
From the “Calibration” menu select “ Single param. calibration” and then “ISE” calibration. The display
shows two options: “Calibrate ISE” and “Restore factory calib”.
When an ISE replaces a pH sensor or another ISE model,
previous calibrations need to be cleared using the <Restore
factory calib.> option first.
If “Calibrate ISE” is selected, the user can perform a single
(10 ppm) or 2‑point calibration with standard 10 ppm and
100 ppm solutions.
If “Restore Factory Calib” is selected, all user calibration data will be deleted and the default
calibration is restored.
Note: The ppm tag will blink when a user calibration was not performed.
When a 2‑point calibration is performed, all of the old data is overwritten, where as for a single point
calibration the meter will also use information from the previous calibration.
Preparation
Prepackaged standards are available in single use sachets. Rinse the ISE with water and shake off
excess water. The procedure always uses 10 ppm first.
Procedure
Cut open the 10 ppm sachet and pour a small quantity of standard over the ISE tip to rinse the
sensor. This should be done over a waste container. Immerse the ISE sensor and temperature probe
into the standard. Position the sachet to ensure sensor membrane and ceramic junction are completely
covered with solution.
The current measurement or dashes, temperature, the standard value and the “Not ready” message
are displayed.
• Once the ISE has stabilized the countdown timer will count
down until the display shows the “Ready” message.
• Press <Confirm> to accept the calibration point.
• After the first calibration point is confirmed, remove sensor
from sachet packet and shake standard off. Blot excess with
a soft tissue. Cut open the 100 ppm sachet. Immerse the
ISE sensor and temperature probe into the standard.
ISE CALIBRATION
To Next Page
Loading...
