Hanna Instruments HI 9912 - Manual

Page 4 - Figure 2 illustrates the controls and terminals.; M E C H A N I C A L L A Y O U T S

4 pH 0 1 2 0 100 200 mV ALARM pH 0 SECONDS mV 200 0 TIMER MINUTES 90 PROPORTIONAL SETTINGS 1 10 2.5 5 7.5 0 SECONDS pH 2.0 0 TIMER MINUTES 90 PROPORTIONAL SETTINGS 1 10 2.5 5 7.5 500 900 CAL ALARM ON OFF SET FEED mV OFFSET SLOPE ALARM ON OFF 0.5 1.5 pH HI 9912 mV ORP ALARM 8 SET FEED ALARM 6 7 ACID ...

Page 6 - FRONT PANEL; Left panel

6 FUNCTIONAL DIAGRAM HI 9912 FUNCTIONAL DIAGRAM HI 9912 FUNCTIONAL DIAGRAM HI 9912 FUNCTIONAL DIAGRAM HI 9912 FUNCTIONAL DIAGRAM HI 9912 pH 0 1 2 0 100 200 mV ALARM pH 0 SECONDS mV 200 0 TIMER MINUTES 90 PROPORTIONAL SETTINGS 1 10 2.5 5 7.5 0 SECONDS pH 2.0 0 TIMER MINUTES 90 PROPORTIONAL SETTINGS 1...

Page 7 - Triple contact alarm in a Normally Closed (NC) or a Normally; BOTTOM VIEW

7 Unplug the instrument from the power supply beforewiring or replacing the fuses. 23 24 25 26 17. Triple contact alarm in a Normally Closed (NC) or a Normally Open (NO) position 18. Powered dosage terminals for pH correction19. Powered dosage terminals for ORP correction20. 110/115V or 220/240V pow...

Page 9 - GENERAL POINTS; pH and ORP electrode

9 C O N N E C T I O N S & W I R I N G C O N N E C T I O N S & W I R I N G C O N N E C T I O N S & W I R I N G C O N N E C T I O N S & W I R I N G C O N N E C T I O N S & W I R I N G ELECTRODE WITHBNC CONNECTION WIRING ACCESS PORTS MATCHING PIN FOR GROUND PROBE GENERAL POINTS • Th...

Page 10 - ALARM CONNECTIONS; only after

10 pH 0 1 2 0 100 200 mV ALARM pH 0 SECONDS mV 200 0 TIMER MINUTES 90 PROPORTIONAL SETTINGS 1 10 2.5 5 7.5 0 SECONDS pH 2.0 0 TIMER MINUTES 90 PROPORTIONAL SETTINGS 1 10 2.5 5 7.5 500 900 CAL ALARM ON OFF SET FEED mV OFFSET SLOPE ALARM ON OFF 0.5 1.5 pH HI 9912 mV ORP ALARM 8 SET FEED ALARM 6 7 ACID...

Page 11 - MAIN POWER SUPPLY CONNECTION; Before

11 ALARM DOSING TIME MINUTES 1 10 2.5 5 7.5 ALARM ON OFF MAIN POWER SUPPLY CONNECTION • Before Before Before Before Before connecting the unit to the mains, make sure connecting the unit to the mains, make sure connecting the unit to the mains, make sure connecting the unit to the mains, make sure c...

Page 13 - • Rinse the tip of the electrode with pH 7.01 solution (

13 pH OFFSET SLOPE ALARM ON OFF 7.01 4cm (1½") HI 7007 4cm (1½") HI 7007 4cm (1½") HI 7007 Make sure that the pH electrode and any ground probe have beenproperly connected and wired to the controller (see preceding pages)and that the meter is plugged to the mains.Calibration should be pe...

Page 14 - O R P C A L I B R A T I O N

14 4cm (1½") HI 7010 pH OFFSET SLOPE ALARM ON OFF 10.01 SLOPE ADJUSTMENT: • Rinse the electrode (and ground probe) thoroughly with water and immersethe bottom 4 cm (1.5”) in a pH10.01 ( HI 7010 ) or a pH 4.01 ( HI 7004 ) buffer solution. • Stir the electrode and wait for the display to stabilize...

Page 16 - • Do not set the time cycle to 0

16 0 SECONDS pH 2.0 0 90 PROPORTIONAL SETTINGS 0.5 1.5 D pH Seconds 15 30 45 60 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 15 30 45 60 D pH Seconds 15 30 45 60 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 15 30 45 60 D pH Seconds 15 30 45 60 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 15 30 45 60 e.g. pH propor...

Page 17 - O V E R D O S A G E T I M E R S

17 ALARM DOSING TIME MINUTES 1 10 2.5 5 7.5 e.g. ORP proportional control Setpoint = 750 mVMeasured value = 725 mVDelta = 750 - 725 = 25 mVProportional settings = mV set to 100 and time cycle to 60 secondsThe controller will be dosingoxidants to increase redox tothe desired value. Since it is25/100 ...

Page 19 - solution. The measured value should be

19 R E D O X M E A S U R E M E N T R E D O X M E A S U R E M E N T R E D O X M E A S U R E M E N T R E D O X M E A S U R E M E N T R E D O X M E A S U R E M E N T Redox measurements allow the quantification of the oxidizing orreducing power of a solution, and are commonly expressed in mV.Oxidation m...

Page 20 - PREPARATION; Storage Solution; STORAGE

20 The protective cap should also be filled with a few drops of HI 70300 storage solution if the electrode is not being used at all. Note: With industrial applications, it is always good practice to keepat least one spare electrode handy. When anomalies are notresolved with a simple maintenance, cha...

Page 21 - TROUBLESHOOTING; Noise; SHORT DISTANCE, INDOOR INSTALLATION

21 For more specific cleaning procedures, refer to the electrode’s instruc-tion manual. IMPORTANT: After performing any of the cleaning procedures rinse the electrode thoroughly with distilled water and recalibrate thecontroller. TROUBLESHOOTING Evaluate your electrode performance based on the follo...

Page 22 - MEDIUM DISTANCE, INDOOR/OUTDOOR INSTALLATION; A C C E S S O R I E S; pH ELECTRODES

22 This type of connection is very delicate and requires constant attentionto maintain proper operating conditions.The conventional electrodes may be used for indoor applications butthe cable length should not exceed 10 m (33'). MEDIUM DISTANCE, INDOOR/OUTDOOR INSTALLATION When an outdoor installati...

Page 23 - Pretreatment oxidizing solution, 460 mL; ELECTRODE STORAGE SOLUTION; Storage solution, 460 mL; ELECTRODE CLEANING SOLUTIONS; General purpose cleaning solution, 460 mL; OTHER ACCESSORIES; BL PUMPS

23 pH CALIBRATION SOLUTIONS HI 7004L pH 4.01 buffer solution, 460 mL HI 7007L pH 7.01 buffer solution, 460 mL HI 7010L pH 10.01 buffer solution, 460 mL ORP SOLUTIONS HI 7020L 200-275mV ORP solution, 460 mL HI 7092L Pretreatment oxidizing solution, 460 mL ELECTRODE STORAGE SOLUTION HI 70300L Storage ...

Page 25 - W A R R A N T Y

25 All Hanna controllers are warranted for two years against defects in workmanship and materials when used for their intendedpurpose and maintained according to instructions.Damages due to accident, misuse, tampering or lack of prescribedmaintenance are not covered. This warranty is limited to free...

Page 26 - Most Hanna meters are available in the following formats:; O T H E R P R O D U C T S F R O M H A N N A

26 • CABLES AND CONNECTORS• CALIBRATION AND MAINTENANCE SOLUTIONS• CHEMICAL TEST KITS• CHLORINE METERS• CONDUCTIVITY/TDS METERS• DISSOLVED OXYGEN METERS• HYGROMETERS• ION SPECIFIC METERS (Colorimeters)• MAGNETIC STIRRERS• Na/NaCl METERS• pH/ORP/Na ELECTRODES• pH METERS• PROBES (DO, µS/cm, RH, T, TDS...

Page 27 - Recommendations for Users

27 C E D E C L A R A T I O N O F C O N F O R M I T Y C E D E C L A R A T I O N O F C O N F O R M I T Y C E D E C L A R A T I O N O F C O N F O R M I T Y C E D E C L A R A T I O N O F C O N F O R M I T Y C E D E C L A R A T I O N O F C O N F O R M I T Y HI 9912 DECLARATION OF CONFORMITY We Hanna Inst...

Hanna Instruments HI 9912 - Manual

Table of Contents:

Summary

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