Hach PHC745, Руководство пользователя

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Figure 3 Probe position during use
1 Filling hole 3 Level of calibration solution or sample
2 Level of electrolyte filling solution 4 Sleeve junction
4.1 Operate the sleeve junction
N O T I C E
Close the sleeve junction and fill the electrolyte after each use. The probe can become permanently
damaged if all of the electrolyte drains from the probe.
Loosen the sleeve junction during calibration and measurement to make sure there is a good
electrical connection between the inner electrolyte and the standard or sample. Lightly move the
sleeve junction up or down a small distance to change the flow rate of the electrolyte. A high
electrolyte flow rate gives a fast response in different sample types but uses a high volume of
electrolyte. Make sure that the electrolyte does not fully drain from the probe.
1. Hold the probe over a beaker or container.
2. Lift the sleeve junction until drops of electrolyte flow out.
3. Lightly push the sleeve junction down to the initial position. Refer to Figure 4 .
Note: Do not loosen the sleeve junction too much. If the electrolyte flow is too high, the electrolyte will drain
quickly and the probe must be filled frequently. Do not tighten the sleeve junction too much. If the electrolyte
flow is too low, the electrolyte will not flow and the electrical connection will not be sufficient.
4. To close the reference junction, slowly move the sleeve junction down until the electrolyte flow
stops.
Note: Always close the sleeve junction when the probe is not in use.
English 7