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ABB 7651 Instruction Manual Download Page 1

pH/ORP Electrode System

7600 Series

Instruction Manual

IM/7650_8

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Summary of Contents for 7651

Page 1: ...pH ORP Electrode System 7600 Series Instruction Manual IM 7650_8 ...

Page 2: ...nts are not to be reproduced in full or part without prior approval of the Technical Publications Department Health and Safety To ensure that our products are safe and without risk to health the following points must be noted 1 The relevant sections of these instructions must be read carefully before proceeding 2 Warning labels on containers and packages must be observed 3 Installation operation m...

Page 3: ...e Reservoir Models 7651 7652 7660 and 7661 12 4 1 Connection to AX 4500 and 4600 Series Transmitters Fig 4 1 and Table 4 1 13 4 2 Connection to Hazardous Area Systems 13 4 ELECTRICAL INSTALLATION 13 4 3 Cable Termination 14 5 CALIBRATING THE SYSTEM 15 5 1 General Calibration of electrodes 15 5 2 Calibration of electrodes used in high purity water applications 15 5 2 1 Monthly Calibration 15 5 2 2 ...

Page 4: ...nch in line system with 2 inch BS10 Table E flange fittings Model 7654 polypropylene 1 metre nominal dip system Model 7664 PVDF 1 metre nominal dip system Model 7655 polypropylene 2 metre nominal dip system Model 7665 PVDF 2 metre nominal dip system Model 7656 polypropylene 3 metre nominal dip system Dip systems are for use in tanks channels etc All the above models are compatible with the AX 4500...

Page 5: ...3 2 PREPARATION A 7651 Polypropylene B 7660 Stainless Steel C 7652 Polypropylene E 7661 PVDF 7654 7664 D Polypropylene 7655 PVDF 7665 7656 2 1 Checking the Code Number Fig 2 1 Fig 2 1 System Types ...

Page 6: ... to 100 C 32 to 212 F and must be used when the mechanical wiper is fitted Low Resistance Electrode 1722 000 low resistance membrane electrode for low temperature For use in the water industry where the sample temperature drops below 10 C 50 F Operates from 0 to 10 pH 0 to 70 C 32 to 158 F Note For conductivities less than 30 µS cm 1 a stainless steel system is recommended Cone Shaped Electrode 17...

Page 7: ...r u t a r e p m e t 0 0 1 T P 0 0 0 0 5 7 1 s r e t a w e l b a t o p r o f d e d n e m m o c e R 2 e d o r t c e l e s s a l g d e p a h s e n o c 0 0 0 1 2 7 1 e d o r t c e l e e c n e r e f e r d r a d n a t s 0 0 0 0 3 7 1 r o t a s n e p m o c e r u t a r e p m e t 0 0 1 T P 0 0 0 0 5 7 1 s n o i t a c i l p p a l a i r t s u d n i r o f r e n a e l c c i n o s a r t l u h t i w d e s u e b ...

Page 8: ...rying out periodically check and top up the flowcell reservoir with clean water or buffer solution 3 1 Siting 3 1 1 Operating Limits Model 7651 Flow Type see Fig 3 1A for details pH range 0 to 14 Operating temperature range 0 to 100 C 32 to 212 F Maximum operating temperature 100 C at 2 1bar 212 F at 30psi Maximum operating pressure at 25 C 77 F 10 6bar 150psi Model 7652 In line Type see Fig 3 1B ...

Page 9: ...ture 110 C 230 F 3 1 2 Operating Pressure Temperature Fig 3 1 3 2 Installing the System 3 2 1 Models 7651 7652 7660 and 7661 Figs 3 2 3 5 These may be mounted in any convenient position for the pipe connections using flexible or rigid piping Allow sufficient space above the system to enable the top cap to be unscrewed and removed and for the entire electrode holder unit to be removed from the flow...

Page 10: ...13 16 in 222 mm 8 3 4 in Allow about 150 mm 6 in free space above the top cover for access and removal of the cover 3 2 2 Model 7652 Fig 3 3 This is installed and held in position by the 2 in BS10 Table E fixing flange only 3 2 3 Models 7654 7655 7656 7664 and 7665 Fig 3 4 These are dip systems installed in any convenient position over the open tank or channel 3 3 Fitting Electrodes Figs 3 6 3 7 3...

Page 11: ...Carefully withdraw sensor holder Unscrew and remove the top cover 1 2 3 Drop the plug end of the cable assembly down through the tube and thread the tagged end through one of the side ports 4 Fit the gland provided but do not tighten at this stage 5 See Fig 3 6 for models 7651 7652 7660 and 7661 or Fig 3 7 models 7654 7655 7656 7664 and 7665 to access the sensor holder Fig 3 6 Access to Sensor Hol...

Page 12: ...al Safety Data Sheet for more information b Shake the bottle of KCl solution well to ensure it is mixed thoroughly so that the solids are freely dispersed in the solution c Slowly fill the reference chamber with solution through the filling hole see Fig 3 8a Fill in small quantities and shake the bottle frequently to keep the KCL in suspension the contents of one bottle should fill the reference c...

Page 13: ...ector Lower Section Connectors Upper Section Reassemble in the reverse order to that shown in the steps in Fig 3 6 or Fig 3 7 Before fitting the Top Cover however connect the colour coded electrode cables to the appropriate electrodes see Fig 3 11 Finally tighten the gland nut to secure the connecting cable 3 4 Fitting the Reservoir Models 7651 7652 7660 Fig 3 10 Location of Blanking Plug and Rese...

Page 14: ...n from fully closed position to avoid creating a vacuum Filler Cap Sensor Holder 1 Push tubing onto the fitting on the sensor holder Tighten the connector firmly 2 3 4 6 a Partially Assembled Reservoir b Fully Assembled Reservoir c Filling the Reservoir Pull off the filler cap 6 7 Replace the filler cap ensuring the O ring is in place 8 9 Note Ensure that the reservoir tube is not kinked and does ...

Page 15: ... 3 1 3 1 3 h t r a E n o i t u l o S h t r a e 5 2 A N 3 2 A N 4 1 Connection to AX 4500 and 4600 Series Transmitters Fig 4 1 and Table 4 1 System cable connections to the pH meter are shown in Fig 4 1 For AX and 4600 series transmitters refer to the pH meter instruction manual For 4500 Series transmitters refer to the list of equivalent connections shown in Table 4 1 4 2 Connection to Hazardous A...

Page 16: ...en Co axial Cable Preparation Wire 16 0 2 PVC covered soldered to screen Trim back black conductive layer to here Fig 4 3 Cable Termination 4 3 Cable Termination Fig 4 3 If the provided standard length cable requires shortening the recommended preparation is as shown in Fig 4 3 Strip back the overall cable sheath to measurements as shown and fit suitable sleeves and solder tags to the leads for co...

Page 17: ...tions contain a high level of sodium that affects the output of the electrode due to sodium response interference at high pH values 5 2 Calibration of Electrodes used in High Purity Water Applications 5 2 1 Monthly Calibration a Rinse the electrodes thoroughly with high purity water b Carry out a single point calibration using a 5 fold diluted 9 or 10pH buffer solution to adjust for small changes ...

Page 18: ...n and then wash in water 3 For heavy non greasy deposits e g rust dip the electrode briefly in concentrated hydrochloric acid to remove the deposit and wash thoroughly Soak the electrode for a few hours in 0 1M hydrochloric acid or a buffer solution and then wash in water Very heavy deposits formed during effluent neutralisation are often best removed by using a 1 1 mixture of concentrated hydroch...

Page 19: ...changed and should be given attention see 3 following Note SLOPE value and CHECK readings can be affected by low insulation on the electrode terminations Always check for any evidence of moisture in the electrode terminations 3 The sealed double junction reference arrangement used on this pH system requires regular maintenance The frequency of this maintenance depends greatly on the application Fa...

Page 20: ... Assembly 7650056 for use with mechanical and ultrasonic cleaners Service Pack 7650040 Small Reference Junction 1360180 Large Reference Junction 1360190 Skirt 7603410 Filling Soln 3 Pack 7650039 saturated KCl 7 3 Model 7660 stainless steel Top Cover 7650064 Electrode Holder Assembly 7650051 reservoir Fed Large Reference junction 1360190 Service Pack 7660040 Clamp Ring 7600640 Stem Flange 7600590 F...

Page 21: ...19 NOTES ...

Page 22: ...20 NOTES ...

Page 23: ...cs Instrumentation pH conductivity and dissolved oxygen transmitters and sensors ammonia nitrate phosphate silica sodium chloride fluoride dissolved oxygen and hydrazine analyzers Zirconia oxygen analyzers katharometers hydrogen purity and purge gas monitors thermal conductivity Customer Support We provide a comprehensive after sales service via a Worldwide Service Organization Contact one of the ...

Page 24: ...ithout notice Printed in UK 07 05 ABB 2005 ABB Limited Oldends Lane Stonehouse Gloucestershire GL10 3TA UK Tel 44 0 1453 826661 Fax 44 0 1453 829671 ABB Inc Analytical Instruments 9716 S Virginia St Ste E Reno Nevada 89521 USA Tel 1 775 850 4800 Fax 1 775 850 4808 ABB has Sales Customer Support expertise in over 100 countries worldwide www abb com ...

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