Hanna-instruments HI 95706 Manual de usuario descargar pdf (Pagina 8)

KEYPAD DESCRIPTION

• ON/OFF: to turn the meter on and off.

• ZERO: to zero the meter prior to measurement.

• READ/TIMER: this is a bi-functional key, just press for making a measurement, or hold the

key for 3 seconds to start a pre-programmed countdown prior to measurement.

• CAL CHECK: this bi-functional key allows to perform validation of the instrument just pressing

the CAL CHECK key, or hold the key for 3 seconds to enter the calibration mode.

OPERATING MODES

• Measurement mode: default operation mode, enables both validation and measurement.

• Calibration mode: may be entered by keeping CAL CHECK pressed

for three seconds (the “CAL”

icon appears), it enables calibration of the instrument.

DISPLAY ELEMENTS DESCRIPTION

1) four digit main display area.

2) CAL: appears when the instrument operates in the calibration mode.

3) the Month and Day icons appear above the number of month and day when a date is

displayed.

4) the blinking “Battery” icon appears when the battery voltage is getting low.

MEASUREMENT PROCEDURE

• Turn the meter on by pressing ON/OFF.

• When the LCD displays “706”, it is ready.

• Fill the cuvet with 10 mL of unreacted sample,

up to the mark, and replace the cap.

• Place the cuvet into the holder and ensure that

the notch on the cap is positioned securely into

the groove.

• Press ZERO and “SIP” will blink on the display.

• After a few seconds the display will show

“ -0.0- ”. The meter is now zeroed and ready for

measurement.

• Remove the cuvet.

• Add 10 drops of HI 93706A-0 Phosphorus

Reagent A to the cuvet.

• Add the content of one packet of HI 93706B-0

Phosphorus Reagent B to the cuvet.

Replace

the cap and shake gently until dissolution is

complete.

Turn the meter on by pressing ON/OFF and follow instruction manual to perform either the

MEASUREMENT, VALIDATION or CALIBRATION PROCEDURE.

MEASUREMENT PROCEDURE

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Hanna-instruments HI 95706 Manual de usuario Pagina 8