Hanna Instruments HI 96729C - Manuals

5 S P E C I F I C AT I O N S PRECISION AND ACCURACY Range 0.00 to 2.00 mg/L Resolution 0.01 mg/L Precision ±0.03 mg/L @ 1.00 mg/L Typical EMC Deviation ±0.01 mg/L Light Source Tungsten lamp Light Detector Silicon Photocell with narrow band interference filter @ 575nm Method Adaptation of the EPA met...

6 PRINCIPLE OF OPERATION Absorption of Light is a typical phenomenon of interaction between electromagnetic radiation andmatter. When a light beam crosses a substance, some of the radiation may be absorbed byatoms, molecules or crystal lattices.If pure absorption occurs, the fraction of light absorb...

7 1) GLP/ key 2) CAL CHECK key3) ZERO/CFM key4) READ/ /TIMER key 5) ON/OFF key 6) Liquid Cristal Display (LCD) 7) Cuvet alignment indicator 8) Cuvet holder F U N C T I O N A L D E S C R I P T I O N A microprocessor controlled special tungsten lamp emits radiation which is first opticallyconditioned ...

9 ERRORS AND WARNINGS The instrument shows clear messages when erroneous condition appears. Messages are also displayedwhen the obtained values are outside expected range. The beeper is playing a beep on errors. a) on zero reading Light High: There is too much light to perform a measurement. Please ...

1 1 The instructions listed below should be carefully followed during testing to ensure best accuracy. • For adding the exact amount of sample and deionized water to the cuvet it is strongly recommended to use twoclass A laboratory pipettes. • Alternatively, fill the cuvet up to the 10 mL mark: the ...

1 2 STARTUP Prepare the instrument for measurement as follows:• Unpack the instrument by removing the dust protection sleeve from the instrument cuvet holder.• Place the battery in the instrument as described in the “BATTERY REPLACEMENT” chapter.• Place the instrument on a flat table.• Do not place ...

1 3 • 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. • Fill one cuvet with 10 mL of deionized water. For most accurate results, use of a classA l a b o r a t o r y p i p e t t e i s s t r o n ...

1 5 • Replace the cap to the cuvet, and shake gently a couple of times. • Place the cuvet with the reacted sample into the cuvet holder and ensure that thenotch on the cap is positioned securelyinto the groove. • Press and hold READ/ /TIMER for three seconds. The display will show thecountdown prior...

1 6 VA L I DAT I O N P R O C E D U R E Use the validation procedure to ensure that the instrument is properly calibrated. Warning: Do not validate the instrument with any standard solutions other than the HANNA CAL CHECK TM Standards, otherwise erroneous results will be obtained. For accurate valida...

1 7 • Press CAL CHECK TM and the lamp, cuvet and detector icons together with “CALCHECK” will appear on the display,depending on the measurement phase. • At the end of the measurement the display will show the validation standard value. The reading should be within specifications as reported in the ...

1 9 • Press GLP/ to edit the desired day (01-31). If the key is kept pressed theday number is automatically increased. Note: It is possible to change the editing from day to year and to month by pressing READ/ /TIMER . • Press GLP/ to edit the desired year (2000-2099). If the key is kept pressed,t h...

2 0 In the GLP mode, the last user calibration date can be consulted and the factory calibration canbe restored. To display the calibration date:• Press GLP/ to enter GLP mode . The calibration month and day will appear onthe main display and the year on thesecondary display. LAST CALIBRATION DATE •...

2 1 • Press READ/ /TIMER to enter in the factory calibration restore screen. Theinstrument asks for confirmation of usercalibration delete. • Press ZERO/CFM to restore the factory calibration or press GLP/ again to abort factory calibration restore. • The instrument briefly notifies “done” when rest...

2 2 • Turn the instrument off by pressing ON/OFF . • Turn the instrument upside down and remove the battery cover by turning it counterclockwise. • Extract the battery from its location and replace it with a fresh one. • Insert back the battery cover and turn it clockwise to close. To replace the in...

2 3 Recommendations for Users Before using these products, make sure that they are entirely suitable for your specific application and for the environment inwhich they are used.Operation of these instruments may cause unacceptable interferences to other electronic equipments, this requiring the oper...