Hanna-instruments HI 96765 Manual de usuario descargar pdf (Pagina 10)

The instructions listed below should be carefully followed during testing to ensure best accuracy.

• Color or suspended matter in large amounts may cause

interference, therefore these should be removed by

treatement with active carbon and by prior filtration.

• For a correct filling of the tube: the liquid in the tube

forms a concavity on the top; the bottom of this concavity

must be at the same level of the 1.5 mL mark.

• It is important that the sample does not contain any debris. This would corrupt the reading.

GENERAL TIPS FOR AN ACCURATE MEASUREMENT

• Whenever the tube is placed into the measurement cell, it must be dry outside, and

completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 or a lint-free

cloth prior to insertion.

• It is possible to take multiple readings in a row, but it is recommended to make a new

calibration for each sample.

STARTUP

Prepare the instrument for measurement as follows:

• Unpack the instrument by removing the dust protection sleeve from the instrument tube holder.

• Place the battery in the instrument as described in the “BATTERY REPLACEMENT” chapter.

• Place the instrument on a flat table.

• Do not place the instrument under direct sun light.

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Hanna-instruments HI 96765 Manual de usuario Pagina 10