Hach ORBISPHERE Manual Básico Del Usuario página 13

5.
5. Clean the anode using the cleaning tool supplied. Place the tool over the sensor head. Clean by
rotating the cleaning tool over the sensor head for a few seconds, in a clockwise direction only.
6. Remove the tool and tap it face down on a flat work surface to remove any powdery deposit.
Check the sensor to ensure that all deposits have been removed from the anode. If not, repeat
step 5. until the anode regains its bright silver appearance.
7. Rinse the sensor head under a tap for 15 seconds, aiming the jet of water directly onto the sensor
head. Do not dry the center electrode area, as the gap between cathode and guard should be left
filled with water.
8. Spread a little of the polishing powder (29331) onto the clean polishing cloth (2934), and add a
few drops of water to form a grey, milky liquid.
9.
9. Screw the polishing tool (DG33303) onto the top of the sensor.
10. Polish the electrodes by moving the sensor face in a circular direction against the liquid in the
polishing cloth for about 30 seconds.
11. Remove the polishing tool from the sensor. Remove any polish deposits by rinsing the sensor
head under a tap for 30 seconds, aiming the jet of water directly onto the sensor head.
Note: If the sensor is used in high level hydrogen sample, do not perform the following steps but continue at
step 19.
12. Remove the plastic base from the bottom of the sensor and connect the sensor to the sensor
cleaning and regeneration center (32301).
6.
10.
7.
11.
8.
12.
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