Hanna-instruments HI 93414 Manual do Utilizador descarregar pdf (Página 25)

FREE AND TOTAL CHLORINE MEASUREMENT

To take colorimetric measurements follow next

steps:

• Turn the instrument on by pressing ON/OFF.

Assure that the correct range is selected by

paying attention to the startup message or to

the measuring units.

• When dashes are displayed on the LCD, the

instrument is ready. The current time appears

on the secondary LCD, if selected in SETUP

menu, or “F Cl” or “t Cl” if the time is not

displayed. The “ZERO” tag will blink

suggesting that a zero measurement should be

done.

ZEROING THE INSTRUMENT

• Fill a clean, dry cuvette with 10 mL of sample,

up to the mark, taking care to handle the cuvette

by the top. Replace the cap.

• Wipe the cuvette thoroughly with a lint-free

cloth to remove any fingerprints, dirt or water

spots.

• Place the cuvette into the instrument. Align the

mark on the cuvettee with the sign on the

instrument top and close the lid.

Note:If you have a cuvette with orientation mark

place the cuvettee with the orientation mark

aligned with the sign on the instrument top.

• Press ZERO/AVG

. The dashes will blink

on the primary LCD. If the zeroing procedure

was successful, the display will show “-0.0-”.

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Hanna-instruments HI 93414 Manual do Utilizador Página 25