Hach 8362sc, Руководство пользователя

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sc100 Operation
4.8 ORP Calibration
The manufacturer offers a one point manual calibration for ORP. The value of the sample
used in the manual calibration may be determined by laboratory analysis or comparison
reading.
4.8.1 ORP Calibration Procedure
For a precise calibration of the ORP electrode, a standard solution is required. The
manufacturer recommends using a one point standard solution calibration. Use the
solution as follows:
1. Holding the flow chamber nut in position, unscrew the flow chamber ( Figure 7 on
page 24 ).
2. Empty the water from the flow chamber and rinse with demineralized water.
3. Rinse the electrodes with demineralized water.
4. Fill flow chamber with the standard solution and reinstall.
5. Calibrate following the one-point calibration method ( section 4.8.2 ).
6. Remove the flow chamber, empty the solution and rinse the flow chamber and
electrodes with demineralized water.
7. Reinstall the flow chamber.
8. Turn on the sample stream to the flow of 100–300 mL/min (100–300 cc/min).
9. Allow the sample to flow through the assembly for a minimum of one hour.
10. Using a qualified standard meter do an overflow method sample measurement,
( Figure 8 on page 31 ).
11. Compare this reading with the reading on the controller. If the reading is different, do a
single point sample calibration on the controller so that it reads the same as the
standard meter.