Hanna-instruments HI 96728 User Manual

1Instruction ManualHI 96728CNitrate ISMwww.hannainst.com

10Over Range: A flashing value of the maximum concentrationindicates an over range condition. The concentration of thesample is beyond the programmed

11The instructions listed below should be carefully followed during testing to ensure best accuracy.• Color or suspended matter in large amounts may c

12MEASUREMENT PROCEDURE• After the reading it is important to discard immediately the sample, otherwise the glassmight become permanently stained.• Al

13• Place the cuvette into the cuvette holderand ensure that the notch on the cap ispositioned securely into the groove.• Press ZERO/CFM and the lamp,

14• Alternatively, wait for 3 minutes then justpress READ/ /TIMER. In all cases, thelamp, cuvette and detector icons willappear on the display, depend

15VALIDATION PROCEDUREUse the validation procedure to ensure that the instrument is properly calibrated.Warning: Do not validate the instrument with a

16• Press CAL CHECK and the lamp, cuvetteand detector icons together with “CALCHECK” will appear on the display,depending on the measurement phase.• A

17CALIBRATION PROCEDURENote: It is possible to interrupt calibration procedure at any time by pressing CAL CHECK orON/OFF keys.Warning: Do not calibra

18• After a few seconds the display willshow “-0.0-”. The meter is now zeroedand ready for calibration. The blinking“READ” asks for reading calibratio

19• Press GLP/ to edit the desired year(2009-2099). If the key is kept pressed,the year number is automaticallyincreased.• When the correct year has

2TABLE OF CONTENTSPRELIMINARY EXAMINATION ... 3GENERAL DE

20To display the calibration date:• Press GLP/ to enter GLP mode. Thecalibration month and day will appear onthe main display and the year on theseco

21• Press READ/ /TIMER to enter in thefactory calibration restore screen. Theinstrument asks for confirmation of usercalibration delete.• Press ZERO/C

22• Turn the instrument off by pressing ON/OFF.• Turn the instrument upside down and remove the battery cover by turning it counterclockwise.• Extract

23Recommendations for UsersBefore using these products, make sure that they are entirely suitable for your specific application and for the environmen

24MAN96728 01/11Printed in EUROPE(ROMANIA)Hanna Instruments Inc.Highland Industrial Park584 Park East DriveWoonsocket, RI 02895 USATechnical Support

3PRELIMINARY EXAMINATIONPlease examine this product carefully. Make sure that the instrument is not damaged. If anydamage occurred during shipment, pl

4GENERAL DESCRIPTIONABBREVIATIONSThe HI 96728 is an auto diagnostic portable microprocessor meter that benefits from Hanna’syears of experience as a m

5SPECIFICATIONSPRECISION AND ACCURACYRange 0.0 to 30.0 mg/LResolution 0.1 mg/LAccuracy ±0.5 mg/L ±10% of reading@ 25°CTypical EMC Deviation ±0.1 mg/LL

6PRINCIPLE OF OPERATIONAbsorption of Light is a typical phenomenon of interaction between electromagnetic radiation andmatter. When a light beam cross

71) GLP/ key2) CAL CHECK key3) ZERO/CFM key4) READ/ /TIMER key5) ON/OFF key6) Liquid Crystal Display (LCD)7) Cuvette alignment indicator8) Cuvette ho

810852973461KEYPAD DESCRIPTION• ON/OFF: to turn the meter on and off.• ZERO/CFM: this is a bi-functional key. Just press to zero the meter prior to me

9ERRORS AND WARNINGSThe instrument shows clear messages when erroneous condition appears. Messages are alsodisplayed when the obtained values are outs