Hanna Instruments HI 95724C Instruction Manual Download Page 9

9

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

The parameter code “724” indicates that the meter is in a ready state
and zeroing can be performed.

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

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.

This indicates that the factory calibration is selected.

GUIDE TO DISPLAY CODES

2

2

2

2

2

1

1

1

1

1

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 calibration
procedure, to indicate that the calibration data has been stored.

16

or

Note:

at this point it is possible to reset the
instrument to restore FACTORY
CALIBRATION, see instructions page 17.

• Place the CAL CHECK™ Standard Cuvet 

A

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 calibration.

• Remove the cuvet and place the CAL CHECK™

Standard HI 95724-11 Cuvet 

B

 into the

holder. Ensure that the notch on the cap is
positioned securely into the groove.

• Press READ and “SIP” will blink during

measurement.

• The instrument will show for three seconds

the CAL CHECK™ standard value.

Then the date of last calibration (e.g.:
“01.08”) appears on the display, or “01.01”
if the factory calibration was selected. In
both cases the number of the month is
blinking, ready for date input.

Note:

if the display shows “ERR” the calibration procedure failed. Verify that both CAL CHECK™
Standards HI 95724-11 Cuvets, A and B, are free from fingerprints or dirt and that they
are inserted correctly.

Summary of Contents for HI 95724C

Page 1: ...1 w w w h a n n a i n s t c o m This Instrument is in Compliance with the CE Directives Instruction Manual HI 95724C Free Total Chlorine ISM 24 MAN95724C 01 04 w w w h a n n a i n s t c o m...

Page 2: ...ER NOTES 23 Dear Customer Thank you for choosing a Hanna product This manual will provide you with the necessary information for the correct use of the instrument Please read it carefully before using...

Page 3: ...ll packing material until you are sure that the instrument works correctly Any defective item must be returned in its original packing 22 Hanna publishes a wide range of catalogs and handbooks for an...

Page 4: ...aced into the measurement cell It is designed to fit a cuvet with a larger neck making it easier to add both sample and reagents The cuvet is made from special optical glass to obtain best results The...

Page 5: ...The figure explains these definitions In a laboratory using a standard solution of 1 00 mg L chlorine and a representative lot of reagents an operator obtained with a single instrument a standard devi...

Page 6: ...s based on the possibility to develop an absorbing compound from a specific chemical reaction between sample and reagents Given that the absorption of a compound strictly depends on the wavelength of...

Page 7: ...then the actual measurement is performed The cuvet has a very important role because it is an optical element and thus requires particular attention It is important that both the measurement and the...

Page 8: ...ppears when the battery voltage is getting low 17 FACTORY CALIBRATION RESET It is possible to restore factory calibration DATE INPUT Keep READ pressed to scroll to the desired month number 01 12 When...

Page 9: ...icate 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 calibration procedure to indicate that the calibration data has been stored 16 or Note...

Page 10: ...e sample is beyond the programmed range dilute the sample and re run the test A flashing value lower than the maximum concentration indicates a low signal to noise ratio condition In this case accurac...

Page 11: ...318 tissue for wiping cuvets see chapter Accessories or a lint free cloth prior to insertion a b 14 VALIDATION PROCEDURE Use the validation procedure to ensure that the instrument is properly calibrat...

Page 12: ...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 measu...

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