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Figure 59 Calibrate ISE
ISE Calibration 3-Point
1. Perform the
"Calibration setup (pH, ORP, ISE, conductivity, turbidity,
and total algae sensors)" on page
with a small amount of standard #1.
NOTE: It is best to calibrate in order of increasing concentration
(e.g. if using 1 mg/L and 100 mg/L standards, calibrate with
1 mg/L first).
2. Push the
Cal
key, then select the applicable ISE sensor.
3. Carefully immerse the sensors into a solution of standard #1.
4. Allow the temperature of the standard to stabilize, then select
Calibration value. Enter the calibration value that corresponds to
standard #1.
5. Observe the actual measurement readings for stability (white line
on graph shows no significant change for 40 seconds), then select
Accept Calibration
displayed in the message area.
6. Select Finish Calibration to complete a 1-point calibration.
Otherwise, continue the calibration procedure to complete at least
a 2-point calibration.
NOTE: A 2-point calibration is extremely accurate and is the
preferred method.
7. Rinse the sensor 2-3 times with a small amount of standard #2.
Discard the standard after rinsing.
8. Carefully immerse the sensors into a fresh solution of standard #2.
9. Allow the temperature of the solution to stabilize then select
Calibration value. Enter the calibration value that corresponds to
standard #2.
10. Observe the actual measurement readings for stability (white line
on graph shows no significant change for 40 seconds), then select
Accept Calibration
displayed in the message area.
11. Select Finish Calibration to complete a 2-point calibration.
Otherwise, continue the calibration procedure to complete a
3-point calibration.
NOTE: To calibrate with a chilled third standard, see
calibration point" on page
12. Rinse the sensor 2-3 times with a small amount of standard #3.
Discard the standard after rinsing.
13. Carefully immerse the sensors into a fresh solution of standard #3.
14. Allow the temperature of the solution to stabilize then select
Calibration value. Enter the calibration value that corresponds to
standard #3.
15. Observe the actual measurement readings for stability (white line
on graph shows no significant change for 40 seconds), then select
Accept Calibration. "Calibration successful!" will be displayed in
the message area.
33. Rinse the sensor 2-3 times
(Figure
59). "Ready for cal point 2" will be
(Figure
59). "Ready for cal point 3" will be
52.
Calibration
"Chilled third
51
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