Hanna-instruments HI 96750 Manual do Utilizador

1Instruction ManualHI 96750PotassiumLR and MR ISMwww.hannainst.com

10Under range: A blinking “0.0” indicates that the sampleabsorbs less light than the zero reference. Check the procedureand make sure you use the same

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

12• Whenever the cuvette is placed into the measurement cell, itmust be dry outside, and completely free of fingerprints, oilor dirt. Wipe it thorough

13• Press RANGE/GLP/ to change the range. Therange can be changed any time when theinstrument is in measurement mode.The selected range is memorized

14• Fill the cuvette with 10 mL of unreactedsample, up to the mark, and replace thecap.• Add six drops of HI 93750A-0, replacethe cap and swirl the so

15INTERFERENCESThe following ions do not interfere below the concentrations reported:Ammonium 10 ppmCalcium 10000 ppm as CaCO3Chlorine 12000 ppmMagnes

16• Turn the meter on by pressing ON/OFF.• When the beeper sounds briefly and theLCD displays dashes, the meter is ready.Note:• Place the CAL CHECKTM

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 will show“-0.0-”. The meter is now zeroed and readyfor calibration. The blinking “READ” asks forreading calibratio

19• Press RANGE/GLP/ to edit the desiredmonth (01-12). If the key is kept pressed,the month number is automaticallyincreased.• Press RANGE/GLP/ to e

2TABLE OF CONTENTSPRELIMINARY EXAMINATION ... 3GENERAL DESC

20It is possible to delete the calibration andrestore factory calibration.• Press RANGE/GLP/ to enter GLPmode.To display the calibration date:• Press

21• Press ZERO/CFM to restore the factorycalibration or press RANGE/GLP/ againto abort factory calibration restore.• Press READ/ /TIMER to enter in t

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

24Printed in EUROPE(ROMANIA)Hanna Instruments Inc.Highland Industrial Park584 Park East DriveWoonsocket, RI 02895 USATechnical Support for CustomersTe

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

4GENERAL DESCRIPTIONABBREVIATIONSThe HI 96750 is an auto diagnostic portable microprocessor meter that benefits from Hanna’syears of experience as a m

5SPECIFICATIONSPRECISION AND ACCURACYRange 0.0 to 10.0 mg/L LR10 to 100 mg/L MRResolution 0.1 mg/L LR1 mg/L MRAccuracy LR: ±1.5 mg/L ±7% of reading @

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

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

8KEYPAD 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 confirmfa

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