Hanna-instruments HI 96710 Manual de usuario descargar pdf (Pagina 17)

• Replace the cuvette into the cuvette holder

and ensure that the notch on the cap is

positioned securely into the groove.

• Press and hold READ/ /TIMER for three

seconds. The display will show the

countdown prior to measurement. An

audible “beep” indicates the end of the

countdown period.

• Alternatively, wait for one minute and

just press READ/ /TIMER. In both cases,

the lamp, cuvette and detector icons will

appear on the display, depending on the

measurement phase.

• The instrument directly displays the

concentration in mg/L of free chlorine on

the Liquid Crystal Display.

INTERFERENCES

Interference may be caused by:

Bromine

Iodine

Chlorine Dioxide

Ozone

Oxidized manganese and Chromium

In case of water with hardness greater than 500 mg/L CaCO

, shake the sample for

approximately 1 minute after adding the reagent.

In case of water with alkalinity greater than 250 mg/L CaCO

or acidity greater than 150 mg/L

CaCO

, the color of the sample could disappear or develop only partially. To resolve this,

neutralize the sample with diluted HCl or NaOH.

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Hanna-instruments HI 96710 Manual de usuario Pagina 17