Hanna Instruments pH 20 Instruction Manual Download | Manualshive

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pH20 • pH21

Basic pH meters

Instruction Manual

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Summary of Contents for pH 20

Page 1: ...pH20 pH21 Basic pH meters Instruction Manual w w w h a n n a i n s t c o m ...

Page 2: ...nstruction manual carefully before using the instru ment This manual will provide you with all the necessary information for the correct use of the instrument as well as a precise idea of its versatility in a wide range of applications If you need additional technical information do not hesitate to e mail us at tech hannainst com These instruments are in compliance with the directives TABLE OF CON...

Page 3: ...REAR PANEL 1 BNC connector for pH or ORP pH 21 only electrode 2 Temperature probe socket for use with the HI 7662 3 Power supply input Plug the 12 Vdc adapter into the DC socket then into the mains Notes Make sure the mains line is protected by a fuse If the instrument needs to be unplugged press the ON OFF key before disconnecting it from the mains Range pH 0 00 to 14 00 ORP 1999 mV pH 21 only C ...

Page 4: ...inking The LCD will show the ORP mV value TAKING pH MEASUREMENTS Make sure that the instrument has been calibrated for pH before taking measurements see pH Calibration section for details Connect the supplied HI 1110B pH electrode to the BNC connec tor on the rear panel see page 4 If automatic temperature compensation is required connect the HI 7662 temperature probe optional to the proper socket ...

Page 5: ...pH 10 01 buffer solution The meter automatically recognizes the buffer and displays the correct value After measurements turn the meter off by pressing the ON OFF key disconnect the power adapter from the mains and the electrode from the instrument Note To perform correct ORP measurements the surface of the ORP electrode must be clean and smooth Note When not in use the tip of the electrode should...

Page 6: ...broken insulation on the cable or cracks on the electrode stem or bulb If any scratches or cracks are present replace the electrode Rinse off any salt deposits with water Connectors must be perfectly clean and dry Refill the electrode with fresh electrolyte see the electrode s specifica tions to select the correct refilling solution Allow the electrode to stand upright for 1 hour Follow the Storag...

Page 7: ...lectrodes HI 8071 3 5M KCl AgCl electrolyte 4 x 30 mL for single junction electrodes FDA approved bottle HI 7072 1M KNO3 electrolyte 4 x 30 mL CLEANING PROCEDURE General Soak in HI7061 General Cleaning Solution for about 30 minutes Removal of films dirt or deposits on the membrane junction Protein Soak in HI7073 Protein Cleaning Solution for 15 minutes Inorganic Soak in HI 7074 Inorganic Cleaning ...

Page 8: ...es HI 8082 3 5M KCl electrolyte 4 x 30 mL for double junction electrodes FDA approved bottle ORP SOLUTIONS HI 7091M Reducing pretreatment solution 230 mL bottle HI 7091L Reducing pretreatment solution 500 mL bottle HI 7092M Oxidizing pretreatment solution 230 mL bottle HI 7092L Oxidizing pretreatment solution 500 mL bottle HI 7020M Test solution 200 275 mV 230 mL bottle HI 7020L Test solution 200 ...

Page 9: ...42 Japan Tel 03 3258 9565 Fax 03 3258 9567 Korea Tel 02 2278 5147 Fax 02 2264 1729 Malaysia Tel 603 5638 9940 Fax 603 5638 9829 Singapore Tel 6296 7118 Fax 6291 6906 SouthAfrica Tel 011 615 6076 Fax 011 615 8582 Taiwan Tel 886 2 2739 3014 Fax 886 2 2739 2983 Thailand Tel 66 2619 0708 Fax 66 2619 0061 UnitedKingdom Tel 01525 850 855 Fax 01525 853 668 USA Tel 401 765 7500 Fax 401 765 7575 For e mail...

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