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A microprocessor controlled special tungsten lamp emits radiation which is first optically conditioned 
and beamed to the sample contained in the cuvette. The optical path is fixed by the diameter of 
the cuvette. Then the light is spectrally filtered to a narrow spectral bandwidth, to obtain a light 
beam of intensity 

I

o

 or 

I.

The photoelectric cell collects the radiation 

I

 that is not absorbed by the sample and converts it 

into an electric current, producing a potential in the mV range.
The microprocessor uses this potential to convert the incoming value into the desired measuring 
unit and to display it on the LCD.
The measurement process is carried out in two phases: first the meter is zeroed and then the actual 
measurement is performed. 
The cuvette 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 calibration (zeroing) cuvettes, are 
optically identical to provide the same measurement conditions. Whenever possible use the same 
cuvette for both. It is necessary that the surface of the cuvette is clean and not scratched. This to avoid 
measurement interference due to unwanted reflection and absorption of light. It is recommended 
not to touch the cuvette walls with hands. 
Furthermore, in order to maintain the same conditions during the zeroing and the measuring phases, 
it is necessary to close the cuvette to prevent any contamination.

PRINCIPLE OF OPERA

TION

The optical system of Hanna Instruments’ 

HI96

 series colorimeters is based on special subminiature 

tungsten lamps and narrow‑band interference filters to guarantee both high performance and 
reliable results.

HI96

 series block diagram (optical layout)

Содержание HI96726

Страница 1: ...INSTRUCTION MANUAL HI96726C Nickel ISM...

Страница 2: ...anna Instruments product Please read this instruction manual carefully before using the instrument This manual will provide you with the necessary information for correct use of the instrument as well...

Страница 3: ...ISION AND ACCURACY PRINCIPLE OF OPERATION FUNCTIONAL DESCRIPTION ERRORS AND WARNINGS GENERAL TIPS FOR AN ACCURATE MEASUREMENT STARTUP MEASUREMENT PROCEDURE VALIDATION PROCEDURE CALIBRATION PROCEDURE G...

Страница 4: ...Meter is supplied complete with Sample Cuvettes and Caps 2 pcs CAL Check standard cuvettes 9V Battery Scissors Cloth for wiping cuvettes Instrument quality certificate Instruction Manual and Quick Ref...

Страница 5: ...a transparent cup This makes the instruments fulfill field applications Display messages aid the user in routine operation The meter has an auto shut off feature that will turn off the instrument afte...

Страница 6: ...f the photometric method The reaction between nickel and the reagent causes a blue tint in the sample Environment 0 to 50 C 32 to 122 F max 95 RH non condensing Battery Type 9V 1 pc Auto Shut off Afte...

Страница 7: ...ight absorbed depends both on the optical path length through the matter and on the physical chemical characteristics of the substance according to the Lambert Beer Law log I Io c d or A c d Where log...

Страница 8: ...e 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 calibration zeroing cuvettes are optically identic...

Страница 9: ...ser calibration date or restore factory calibration KEYPAD DESCRIPTION ON OFF to turn the meter on and off ZERO CFM to zero the meter prior to measurement to confirm edited values or to confirm factor...

Страница 10: ...month day and date icons appear when a date is displayed 8 Four digit main display 9 Measuring units 10 Four digit secondary display FUNCTIONAL DESCRIPTION The instrument shows clear messages when err...

Страница 11: ...reading 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 O...

Страница 12: ...the lamp to cool down d other errors and warnings 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 displa...

Страница 13: ...tom of this concavity must be at the same level of the 10 mL mark Proper use of the powder reagent packet a use scissors to open the powder packet b push the edges of the packet to form a spout c pour...

Страница 14: ...stained All the reaction times reported in this manual are at 25 C 77 F In general the reaction time should be increased for temperatures lower than 20 C 68 F and decreased for temperatures higher tha...

Страница 15: ...fter the reagents are added the reacted sample is measured When the beeper sounds briefly and the LCD displays dashes the meter is ready The blinking ZERO indicates that the instrument needs to be zer...

Страница 16: ...nd detector icons will appear on the display depending on the measurement phase Add the content of one packet of HI93726 0 reagent Replace the cap and shake gently until completely dissolved Remove th...

Страница 17: ...n period At the end of measurement the instrument directly displays concentration in g L of nickel on the LCD MEASUREMENT PROCEDURE INTERFERENCES Interference may be caused by copper Alternatively wai...

Страница 18: ...vette A into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove When the beeper sounds briefly and the LCD displays dashes the meter is ready Use the valida...

Страница 19: ...e At the end of the measurement the display will show the validation standard value The reading should be within specifications as reported in the CAL CheckTM Standard Certificate If the value is foun...

Страница 20: ...he blinking ZERO asks for instrument zeroing Place the CAL CheckTM Standard HI96726 11 Cuvette A into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove Not...

Страница 21: ...kTM Standard HI96726 11 Cuvette B into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove Press READ TIMER and the lamp cuvette and detector icons will appe...

Страница 22: ...ory calibration was selected before In both cases the year number is blinking ready for date input CALIBRATION PROCEDURE After measurement the instrument will show for three seconds the CAL CheckTM St...

Страница 23: ...ERO CFM or READ TIMER to confirm Now the display will show the day blinking Press ZERO CFM to save the calibration date Note It is possible to change the editing from day to year and to month by press...

Страница 24: ...display If no calibration was performed the factory calibration message F CAL will appear on the main display and the instrument returns to measurement mode after three seconds LAST CALIBRATION DATE P...

Страница 25: ...en the instrument is switched on The blinking ZERO means that a new zero has to be performed One fresh battery lasts for around 750 measurements depending on the light level The remaining battery capa...

Страница 26: ...wise to close To replace the instrument s battery follow the steps BATTERY REPLACEMENT ACCESSORIES Reagent Set HI93726 01 Reagents for 100 tests HI93726 03 Reagents for 300 tests Other Accessories HI9...

Страница 27: ...n send it with shipment costs prepaid When shipping any instrument make sure it is properly packaged for complete protection To validate your warranty fill out and return the enclosed warranty card wi...

Страница 28: ...a Instruments Inc Highland Industrial Park 584 Park East Drive Woonsocket RI 02895 USA www hannainst com Local Office Hanna Instruments USA 270 George Washington Highway Smithfield RI 02917 Phone 800...

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