Hanna-instruments HI 96769 Manuel d'utilisateur télécharger pdf

Range 0.00 to 3.50 mg/L (as SDBS)

Resolution 0.01 mg/L

Accuracy ±0.04 mg/L ±3% of reading @ 25°C

Typical EMC Deviation ±0.01 mg/L

Light Source Tungsten lamp

Light Detector Silicon Photocell with narrow band inter-

ference filter @ 610 nm

Method Adaptation of the USEPA method 425.1 and

Standard Methods for the Examination of

Water and Wastewater, 20

edition, 5540C,

Anionic Surfactants as MBAS.

Environment 0 to 50°C (32 to 122°F); max 95% RH

non-condensing

Battery Type 1 x 9 volt

Auto-Shut off After 10' of non-use in

measurement mode

;

after 1 hour of non-use in

calibration mode

;

with last reading reminder.

Dimensions 192 x 102 x 67 mm

(7.6 x 4 x 2.6")

Weight 290 g (10 oz.).

INSTRUCTION MANUAL

HI 96769HI 96769

HI 96769

Preliminary examination

For more details about spare parts and

accessories see “Accessories”

Technical specifications

Functional description

Errors and warnings

Measurement procedure

Anionic Surfactants

ISM

Please examine this product carefully. Make sure that the instrument is

not damaged. If any damage occured during shipment, please notify

your Dealer.

Each HI 96769 Ion Selective Meter is supplied complete with:

• Two Sample Cuvettes and Caps

• 9V Battery

• Instruction Manual

Note: Save all packing material until you are sure that the instrument

works correctly. Any defective item must be returned in its original

packing.

1) GLP/ key: press to enter

GLP mode

. In

calibration mode

press to

edit the date and time.

2) CAL CHECK key: press to perform the validation of the meter, or press

and hold for three seconds to enter the

calibration mode

3) ZERO/CFM key: press to zero the meter prior to measurement, to

confirm edited values or to confirm factory calibration restore.

4) READ/ /TIMER key: In

measurement mode

, press to make a

measurement, or press and hold for three seconds to start a pre-

programmed countdown prior to measurement. In

GLP mode

press to

view the next screen.

5) ON/OFF key: to turn the meter on and off.

6) Liquid Crystal Display (LCD)

7) Cuvette alignment indicator

8) Cuvette holder

DISPLAY ELEMENTS DESCRIPTION

1) The measuring scheme (lamp, cuvette, detector), appears during

different phases of zero or reading measurement

2) Error messages and warnings

3) The battery icon shows the charging level of the battery

4) The hourglass appears when an internal checking is in progress

5) Status messages

6) The chronometer appears when the reaction timer is running

7) The month, day and date icons appear when a date is displayed

8) Four digit main display

9) Measuring units

10) Four digit secondary display

ON ZERO READING

Light High: There is too much light to perform

a measurement. Please check the preparation of

the zero cuvette.

Light Low: There is not enough light to perform

a measurement. Please check the preparation of

the zero cuvette.

No Light:The instrument cannot adjust the

light level. Please check that the sample does

not contain any debris.

Inverted cuvettes: The sample and the

zero cuvette are inverted.

Zero: A zero reading was not taken. Follow

the instructions of the measurement

procedure for zeroing the meter.

ON SAMPLE READING

DURING CALIBRATION PROCEDURE

Standard Low: The standard reading is less

than expected.

Standard High: The standard reading is higher

than expected.

Cap error: Appears when external light enters in

the analysis cell. Assure that the cuvette cap is

present.

OTHER ERRORS AND WARNINGS

Under range: A blinking “0.00” indicates that

the sample absorbs less light than the zero reference.

Check the procedure and make sure you use the

same cuvette for reference (zero) and measurement.

Over Range: A flashing value of the maximum

concentration indicates an over range condition. The

concentration of the sample is beyond the programmed

range: dilute the sample and re-run the test.

1• Turn the meter on by pressing ON/OFF.

2• When the beeper sounds briefly and the

LCD displays dashes, the meter is ready.

The blinking “ZERO” indicates that the

instrument needs to be zeroed first.

3• Fill the graduated glass vial with 25 mL of

sample.

For most accurate results, use of a class A

laboratory pipette is strongly recommended.

Alternatively, it is possible to use the plastic pipette

to fill the glass vial up to the 25 mL mark.

4• Add 2 drops of HI 95769A-0 Anionic

Surfactants Reagent A and 2 drops of

HI 95769B-0 Anionic Surfactants Reagent B.

5• Close the glass vial with its cap and invert

to mix. The solution will turn blue.

6• Add exactly 10 mL of Chloroform reagent.

For most accurate results, use a class A glass

laboratory pipette is strongly recommended.

Alternatively, it is possible to use another

clean plastic pipette to fill the vial up to the

10 mL mark.

Note: Chloroform is heavier than water

thus it will sink to the bottom of the

graduated glass vial. Do not mix up the

pipettes.

7• Close tightly the glass vial with its cap and

shake it vigorously for 30 seconds.

Note: Block the cap with a finger during shaking.

8• Press and hold

READ/READ/

READ/

/TIMER/TIMER

/TIMER for three

seconds and the display will show the

countdown. The beeper is playing a beep

During this period, the chloroform layer

separates from the aqueous layer: the color

of the aqueous layer will fade slightly if

anionic surfactants are present, while the

chloroform layer will turn blue.

9• Remove the cap.

10•Using the long plastic pipette, remove the

upper aqueous layer and discard. Do not

remove the lower chloroform layer.

11•Add to the vial about 15 mL of deionized

water, up to the 25 mL mark.

12•Add 2 drops of HI 95769A-0 Anionic

Surfactants Reagent A.

13• Close tightly the glass vial with its cap and

shake it vigorously for 30 seconds.

Note: Block the cap with a finger during shaking.

14•Press and hold

READ/READ/

READ/

/TIMER/TIMER

/TIMER for three

seconds and the display will show the

countdown. The beeper is playing a beep

at the end of countdown period.

Alternatively, wait for 2 minutes leaving the

vial capped and undisturbed.

During this period, the chloroform layer

separates from the aqueous layer.

15•Remove the cap.

16•Insert a

clean plastic pipette below the

upper aqueous layer to transfer only the

lower chloroform layer into a cuvette paying attention

not to transfer the upper aqueous layer too.

17•Cap the cuvette. This is the reacted sample (#2).

18•Fill another cuvette with 10 mL of Chloroform

reagent up to the 10 mL mark and place

the cap. This is the blank (#1).

19•Place the blank (cuvette #1) into the

cuvette holder and ensure that the notch

on the cap is positioned securely into the

groove.

20•Press ZERO/CFM and the lamp, cuvette

and detector icons will appear on the display,

depending on the measurement phase.

21•After a few seconds, the display will show

“-0.0-”. The meter is now zeroed and

7, 13

8, 14

11-12

www.hannainst.com

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 the meter. If you need additional

technical information, do not hesitate to e-mail us at [email protected].

Cooling lamp: The instrument waits for the

lamp to cool down.

Battery low: The battery must be replaced

soon.

Dead battery: 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 the meter.

3’’

Notes: The solution in the cuvette must be limpid.

If the solution is clouded, you can improve separation between

the chloroform and aqueous layers by gently warming the cuvette

(for instance by holding the cuvette in the hand).

If the chloroform layer contains some aqueous drops hanging on

the cuvette wall, gently swirl or invert the cuvette.

It is important to transfer at least 7 mL of chloroform layer into the

measurement cuvette, thus up to 0.5 cm (1/4”) below the 10 mL mark.

If the transferred volume is lower than 7 mL, the accuracy of the test

may be affected. Please repeat the test waiting for longer than 2

minutes, to allow complete separationbetween the two phases.

19, 23

at the end of countdown period.

Alternatively, wait for 2 minutes leaving the

vial capped and undisturbed.

1 2

Résumé du contenu

Page 1 - Anionic Surfactants

Range 0.00 to 3.50 mg/L (as SDBS)Resolution 0.01 mg/LAccuracy ±0.04 mg/L ±3% of reading @ 25°CTypical EMC Deviation ±0.01 mg/LLight Source Tungsten la

Page 2 - CALIBRATION

LAST CALIBRATION DATE1• Press GLP/ to enter GLP mode. Thecalibration month and day will appear onthe main display and the year on thesecondary displa

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