Hanna-instruments HI 96724C Bedienungsanleitung Seite 1

1Instruction ManualHI 96724CFree & Total ChlorineISMwww.hannainst.com

10Under range: A blinking “0.00” indicates that the sampleabsorbs less light than the zero reference. Check the procedureand make sure you use the sam

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

13To compensate the meter for the sample turbidity or color, the measurement takes place in twophases. First, the meter is zeroed using the unreacted

14• Remove the cuvette.•For free chlorine measurement: add 3drops of HI 93701A-F (DPD1 indicator) and3 drops of HI 93701B-F (DPD1 buffer) to anempty

15• Wait for 2’ and 30’’ and press READ/ .The lamp, cuvette and detector icons willappear on the display, depending on themeasurement phase.• At the e

16• After a few seconds, the display will show“-0.0-”. The meter is now zeroed and readyfor validation.• Remove the cuvette.• Place the CAL CHECKTM St

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 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

2TABLE OF CONTENTSPRELIMINARY EXAMINATION ... 3GENERAL DESC

20In the GLP mode, the last user calibration date can be consulted and the factory calibration canbe restored.To display the calibration date:• Press

21• Press READ/ to enter in the factorycalibration restore screen. The instrumentasks for confirmation of user calibrationdelete.• Press ZERO/CFM to

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 96724 is an auto diagnostic portable microprocessor meter that benefits from Hanna’syears of experience as a m

5SPECIFICATIONSPRECISION AND ACCURACYRange 0.00 to 5.00 mg/L of Cl2 (Free or Total)Resolution 0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 mg/L above 3.50 m

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/ key5) ON/OFF key6) Liquid Crystal Display (LCD)7) Cuvette alignment indicator8) Cuvette holderF

810852973461KEYPAD DESCRIPTION• ON/OFF: to turn the meter on and off.• ZERO/CFM: to zero the meter prior to measurement, to confirm edited values or t

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