Hanna-instruments HI 9812-5N Manual de usuario Pagina 1

1Instruction ManualHI 9812-5PortablepH/EC/TDS/°C Meterwww.hannainst.com

10Accessories needed:• Use HI 70031 (1413 µS/cm) EC calibration solution orHI 70032 (1382 ppm) TDS calibration solution.Note: The conversion between E

11The TDS value in aqueous solutions is directly proportional to theconductivity. The ratio between the two parameters depends on thesolution.The inst

12These meters are powered by a 9V battery that is located on the rearof the instrument.When battery symbol is empty a low battery condition is indica

13PERIODIC MAINTENANCEInspect the probe and the cable. The cable used for the connection tothe meter must be intact and there must be no points of bro

14PROBESHI 1285-5 Combination, amplified pH/EC/TDS/temperature probewith built-in temperature sensor, 8-pin DIN connectorand 1 m (3.3') cablepH B

15RECOMMENDATIONS FOR USERSBefore using these products, make sure they are entirely suitable forthe environment in which they are used.Operation of th

16Printed in EUROPE(ROMANIA)MAN9812 09/10Hanna Instruments Inc.Highland Industrial Park584 Park East DriveWoonsocket, RI 02895 USATechnical Support f

2WARRANTY ... 2PRELIMINARY EXAMINATION ...

3All rights are reserved. Reproduction in whole or in part is prohibited without the writtenconsent of the copyright owner.PRELIMINARY EXAMINATIONPREL

41) 8-pin DIN connector for probe2) Liquid Crystal Display3) pH range selection key4) µS/cm (EC) range selection key5) ppm (TDS) selection key6) pH of

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6INITIAL PREPARATIONEach meter is supplied complete with a 9V battery. Remove thebattery compartment cover on the back of the meter and install thebat

7• Select the appropriate measurement range (EC or TDS).• Wait a couple of minutes for the temperature sensor to reachthermal equilibrium. The display

8For greatest accuracy, frequent calibration of the instrument isrecommended. The instrument should be recalibrated for pH:a) Whenever the electrode i

9For temperature compensation during calibration, please refer to thefollowing chart.For instance, if the buffer temperature is 25°C, the display shou