Hanna-instruments HI 93414 Manual de usuario descargar pdf (Pagina 33)

• Turn the instrument on by pressing ON/OFF.

Make sure that the instrument is in the free or

total chlorine range (the desired one).

• Press RANGE s to select the desired range

(free or total chlorine). When dashes appear

on the LCD, the instrument is ready. The

“ZERO” tag will blink on the LCD.

• Place the zero cuvette (A) in the instrument

with the mark aligned with the mark on the

instrument top.

• Close the lid and press ZERO/AVG t. The

LCD will display blinking dashes and the

measuring icon during zero measurement. At

the end of zero measurement the “-0.0-” is

displayed. The meter is now ready for

validation.

COLORIMETER CALIBRATION

The HI 93414 free and total chlorine colorimeter has a powerful CAL CHECK function that allows the

user to check the instrument calibration against a NIST traceable standard before making a set of

measurements. With the same standard, the instrument could be re-calibrated, if necessary.

Note:Free and total chlorine must be calibrated separately. Calibration of one range will not

calibrate the other range.

VALIDATION PROCEDURE

Warning: Do not validate or calibrate the instrument with standard solutions other than Hanna CAL

CHECK™ Standards, otherwise erroneous results will be obtained. For accurate validation

and calibration please perform test at room temperature, 18 to 25 ºC (64.5 to 77.0 ºF).

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Hanna-instruments HI 93414 Manual de usuario Pagina 33