Hanna-instruments HI 96707C Manual de usuario

1Instruction ManualHI 96707CNitrite Low Range ISMwww.hannainst.com

10Under range: A blinking “0.000” indicates that the sampleabsorbs less light than the zero reference. Check the procedureand make sure you use the sa

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.• Add the content of one packet ofHI 93707-0 Nitrite Low Range reagent.Replace the cap and shake gently for15 seconds.• Replace

15INTERFERENCESHighly buffered samples (alkalinity above 500 ppm) or with extreme pH may exceed thebuffering capacity of the reagent: neutralize acidi

16The reading should be within specifications as reported in the CAL CHECKTM StandardCertificate. If the value is found out of the specifications, ple

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 andready 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

20In the GLP mode, the last user calibration date can be verified and the factory calibration can berestored.To display the calibration date:• Press G

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

22To replace the instrument’s battery, follow the steps:• Turn the instrument off by pressing ON/OFF.• Turn the instrument upside down and remove the

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 96707 is an auto diagnostic portable microprocessor meter that benefits from Hanna’syears of experience as a m

5SPECIFICATIONSPRECISION AND ACCURACYRange 0.000 to 0.600 mg/L (as NO2¯-N)Resolution 0.001 mg/LAccuracy ±0.020 mg/L ±4% of reading @ 25°CTypical EMC D

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 also displayedwhen the obtained values are outs