Hanna Instruments HI 95725C User Manual

Page 5

KEYPAD DESCRIPTION

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

• ZERO: press to zero the meter prior to measurement.

• READ: press for making a 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.

This prompt appears for 1 second each time the instrument is turned on.

The parameter code “Cl”, “CYS” or “PH” indicates that the meter is in
a ready state and zeroing can be performed. The parameter code that
appears is the one of the last selected parameter (Cl=free and total
chlorine, CYS=cyanuric acid or PH=pH).

Sampling in Progress. This

flashing prompt

appears each time the meter

is performing a measurement.

This indicates that the meter is in a zeroed state and measurement can
be performed.

The blinking "BAT" indicates that the battery voltage is getting low and
the battery needs to be replaced.

This indicates that the battery is dead and must be replaced. Once this
indication is displayed, the meter will lock up. Change the battery and
restart.

“Configuration”: this indicates that the meter has lost its configuration.
Contact your dealer or the nearest Hanna Customer Service Center.

CALIBRATION MODE MESSAGES (only for chlorine)

The date of the last calibration appears on the LCD each time the
calibration mode is entered. If calibration is performed for the first time,
“F.CAL” appears.

The flashing digits indicate that:

1) the month can be set
2) the day can be set

“Storage”: this prompt appears for 1 second at the end of the calibra-
tion procedure, to indicate that the calibration data has been stored.

GUIDE TO DISPLAY CODES

This indicates that the factory calibration is selected.