Hanna-instruments HI 254 Manual do Utilizador

1Instruction ManualHI 254Microprocessor-BasedpH/mV/ºCBench Meterwww.hannainst.com

10 The   tag will blink on the LCD until the reading isstable. When the reading is stable and close to the selected buffer, theREADY tag will be

11 If necessary, press the ARROW keys to select a different buffer value. The   tag will blink on the LCD until the reading isstable. When the re

12GOOD LABORATORY PRACTICE (GLP)GLP is a set of functions that allows storage and retrieval of data regarding themaintenance and status of the electro

13 The pH calibration buffers in calibrating order.The first pH calibration buffer:The second pH calibration buffer:The third pH calibration buffer:T

14CALINTVCALLOGGING FUNCTIONUp to 50 LOG samples can be stored into memory.LOGGING THE CURRENT DATATo store the current reading into memory press LOG

15When LOG is pressed, a complete set of information is stored: date, time, pH,mV, temperature and calibration data.VIEW LOGGED DATAPress RCL while in

16LOGDATELOG mV The time on the primary LCD, along with TIME tag. The date on the primary LCD, along with DATE tag. The calibration offset

17LOG If del ALL option was selected, all records are deleted and theinstrument returns to measurement mode.Note: After LOG is pressed while in mea

18Press the ARROW keys to change the minutes.Press CFM to save the modified value.Press CAL to escape without saving.CURRENT DATE SETPress CAL when th

19BEEP STATUS SETPress CAL when the beep status is displayed. Beep status (On or OFF) willstart blinking.Press the ARROW keys to change the beep statu

2TABLE OF CONTENTSWARRANTY ... 2

20Press the ARROW keys to change the calibration time-out value.Press CFM to save the modified calibration time-out value.Press CAL to escape without

21All the instruments are factory calibrated for temperature.Hannas temperature probes are interchangeable and no temperaturecalibration is needed wh

22 Use the ARROW keys to set the reading on the secondary LCD to that ofthe hot water. When the reading is stable and close to the selectedcalibrati

23 mV CALIBRATION(for technical personnel only)All the instruments are factory calibrated for mV.Hannas ORP electrodes are interchangeable and no mV

24RELATIVE mV CALIBRATION Press CAL when the instrument is in RELATIVE mV measurement mode.The mV and   tags will blink. Absolute mV is displayed

25Data transmission from the instrument to the PC can be done with the HI92000 Windows® compatible software (optional). HI 92000 also offersgraphing a

26CHR n Change the instrument range according with the parametervalue (n): n=0 pH range/0.001 resolution n=1 pH range/0.01 resolution n=2 pH range/

27PMET SEULAVHpCº Fº 86.1 10.4 68.6 10.7 81.9 10.01 54.210 23 76.1 10.4 89.6 31.7 64.9 23.01 24.315 14 76.1 00.4 59.6 01.7 93.9 42.01 12.3101 05 76.1

28PREPARATION PROCEDURERemove the protective cap of the pH electrode.DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal withelectrodes. Th

29For refillable electrodes:If the filling solution (electrolyte) is more than 2½ cm (1) below the fill hole,add HI 7082 or HI 8082 3.5M KCl Electrol

3PRELIMINARY EXAMINATIONRemove the instrument from the packing material and examine it carefully tomake sure that no damage has occurred during shippi

30CLEANING PROCEDURE General Soak in Hanna HI 7061 or HI 8061 GeneralCleaning Solution for approximately ½ hour. Protein Soak in Hanna HI 7073 or HI

31TROUBLESHOOTING GUIDESMOTPMYS MELBORP NOITULOSevissecxe/esnoperwolS.tfird.edortceleHpytriD nipitedortceleehtkaoS1608IHro1607IHsetunim03rofnoituloseh

32Typical Electrode LifeAmbient Temperature 1  3 years90 ºC Less than 4 months120 ºC Less than 1 monthAlkaline ErrorHigh concentrations of sodium ion

33pH BUFFER SOLUTIONSHI70004P pH 4.01 Buffer Sachets, 20 mL, 25 pcsHI70007P pH 7.01 Buffer Sachets, 20 mL, 25 pcsHI70010P pH 10.01 Buffer Sachets,

34ORP PRETREATMENT SOLUTIONSHI7091L Reducing Pretreatment Solution, 460 mLHI7092L Oxidizing Pretreatment Solution, 460 mLpH ELECTRODESAll electrodes

35HI1330BGlass-body, semimicro, single junction, refillable, combination pH electrode.Use: laboratory, vials.HI1331BGlass-body, semimicro, single ju

36120 mm4.7"12 mm0.5"FC 10075 mm2.95"6 mm0.25"FC 200120 mm4.7"12 mm0.5"FC 210120 mm4.7"12 mm0.5"9.5mm DIA0.37&

37Kynar® is registered Trademark of Pennwalt Corp.Ultem® is registered Trademark of General Electric Co.HI1413BGlass-body, single junction, flat

38EXTENSION CABLE FOR SCREW-TYPE ELECTRODES(SCREW TO BNC ADAPTER)HI 7855/1 Extension cable 1 m (3.3') longHI 7855/3 Extension cable 3 m (9.9&ap

39RECOMMENDATIONS FOR USERSBefore using this product, make sure that it is entirely suitable for theenvironment in which it is used.Operation of this

41) Liquid Crystal Display (LCD).2) CFM/GLP key, to confirm different values or to display Good LaboratoryPractice information.3) CAL key, to enter an

40MAN25410/04SALES AND TECHNICAL SERVICE CONTACTSAustralia:Tel. (03) 9769.0666  Fax (03) 9769.0699China:Tel. (10) 88570068  Fax (10) 88570060Egypt:T

5HI 254SPECIFICATIONSEGNARHp0.61ot0.2Hp00.61ot00.2Hp000.61ot000.2Vm9.996±Vm0002±Cº0.021ot9.9NOITULOSERHp1.0Hp10.0Hp100.0)Vm9.996±(Vm1.0)Vm0002±(Vm

6OPERATIONAL GUIDEPOWER CONNECTIONPlug the 12 VDC adapter into the power supply socket.Note: This instrument uses non volatile memory to retain the pH

7If measurements are taken successively in different samples, it is recommendedto rinse the electrode thoroughly with deionized water or tap water and

8RELATIVE mV MEASUREMENTS Press RANGE until rEL message will be displayed on the secondary LCD linefor about one second and mV tag will blink. Af

9pH CALIBRATIONCalibrate the instrument frequently, especially if high accuracy is required.The instrument should be recalibrated : Whenever the pH e