Hanna Instruments BL 7916 Instruction Manual Download

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Instruction Manual

BL 7916 - BL 7917

pH and ORP

Controller &

Dosing Pump

h t t p : / / w w w . h a n n a c a n . c o m

These Instruments are in

Compliance with the CE Directives

Summary of Contents for BL 7916

Page 1: ...Instruction Manual BL 7916 BL 7917 pH and ORP Controller Dosing Pump h t t p w w w h a n n a c a n c o m These Instruments are in Compliance with the CE Directives ...

Page 2: ...ce with the directives EN 50081 1 and EN 50082 1 TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS TABLE OF CONTENTS PRELIMINARY EXAMINATION 3 GENERAL DESCRIPTION 4 FLOW RATE CHART 5 FUNCTIONAL DESCRIPTION BL 7916 6 FUNCTIONAL DESCRIPTION BL 7917 7 SPECIFICATIONS 8 VALVE HOSE ASSEMBLY DIAGRAM 9 MECHANICAL DIMENSIONS 10 INSTALLATION 11 OPERATIONAL GUIDE 18 pH CALIBRATION 22 TR...

Page 3: ...nstruction manual Follow all general safety guidelines during operation Remember electrical devices are potentially hazardous Check that the voltage of the installation matches the voltage indicated on the specification label on the back of the pump Note It is the responsibility of the user to install and ground the pump properly it is highly recommended to install an external switch Each pump is ...

Page 4: ... and BL 7917 Control Pump System offer respectively a pH and ORP monitoring system with proportional control of a diaphragm pump and an LCD readout Features include Two advanced instruments in one compact unit Proportional control for precisely maintained set points Rugged construction with a one piece casing and a transpar ent cover to protect controls and terminals Chemically resistant non clogg...

Page 5: ...een flow rate and pressure The table below shows typical reduction of the flow rate with an increase of pressure The pump supplied with the system has a capacity of 13 3 LPH 3 5 GPH at 0 5 BAR 7 4 PSI BL 7916 BL 7917 FLOW PRESSURE BAR PSI LPH GPH 0 5 7 4 1 0 14 7 2 0 29 4 3 0 44 1 4 0 58 8 13 3 3 46 11 7 3 04 10 1 2 63 9 0 2 33 7 8 2 03 ...

Page 6: ...quid Crystal Display 6 Offset Calibration Trimmer 7 Setpoint Adjustment Trimmers FINE and COARSE 8 Slope Calibration Trimmer 9 Acid Base Selection Switch 10 Display Mode Selection Switch SET or MEASURE 11 Terminal Connections 12 BNC Connector for pH electrode 13 Overheating LED 14 Power Socket and Fuse Holder 15 Cable Glands Unplug the instrument from the power supply before replacing the fuse or ...

Page 7: ...eplacing the fuse or making any electrical connections 1 Discharge Valve Assembly 2 Pump head 3 Suction Valve Assembly 4 Hose 5 Liquid Crystal Display 6 Setpoint Adjustment Trimmers FINE and COARSE 7 Reduction Oxidation Selection Switch 8 Operating Mode Selection Switch SET or MEASURE 9 Terminal Connections 10 BNC Connector for ORP electrode 11 Overheating LED 12 Power Socket and Fuse Holder 13 Ca...

Page 8: ...g 11 lb Range 0 00 to 14 00 pH Resolution 0 01 pH Accuracy 20 C 68 F 0 01 pH TypicalEMCDeviation 0 1 pH Input High Impedance 10 Ohm Dosage Proportional acid or basic User selectable DosingContact Isolated 2A Max 240V resistive load 1 000 000 strokes Alarm Contact Isolated 2A Max 240V resistive load 1 000 000 strokes Calibration Offset 1 pH by offset trimmer Slope 85 to 115 by slope trimmer Recorde...

Page 9: ...9 VALVE HOSE ASSEMBLY DIAGRAM VALVE HOSE ASSEMBLY DIAGRAM VALVE HOSE ASSEMBLY DIAGRAM VALVE HOSE ASSEMBLY DIAGRAM VALVE HOSE ASSEMBLY DIAGRAM NECK ...

Page 10: ...dimensioned illustrations show the layout of the Controller Pumps and how they utilize the one piece polypropylene injection molded housing Since there are no joints or screws holding different sections of the housing together the case is extremely rugged and sturdy BOTTOM VIEW FRONT VIEW 99mm 3 90 110mm 4 33 142mm 5 60 5mm 0 19 129mm 5 08 17mm 67 55mm 2 16 181mm 7 13 110mm 4 33 204mm 8 03 164mm 6...

Page 11: ...be conveniently close to the injection point allow easy access to the flow rate control and pipe or hose connections be no more than 1 5 meters 5 feet above the operating position of the suction valve assembly Dimensions for Installation BlackStone Pumps are designed for permanent installation The pump can be mounted directly on a wall or tank see page 10 for the specific mounting dimensions Power...

Page 12: ... from direct exposure to outdoor elements direct sun light rain extreme temperatures high humidity etc Generally speaking the shorter the suction distance the more efficient the pump operates The pump should be placed in a conventional location that will allow easy access to the control and connections It should be placed so that regular visual inspections of the connections and hoses are facilita...

Page 13: ...an pipe fittings for permanent pipe connections The foot valve assembly HI721005 should always hang vertically and not lay horizontal on the bottom of the tank or drum A vertical assembly will ensure that the valve is positioned properly and prevent loss of prime For the U S standard installations use PVC adapters to connect the suction and discharge valves to the PVC pipe UNIONCONNECTION ADAPTER ...

Page 14: ...ed Slip a hose connector onto the hose over the head valve and up to the bottom of the threads ensuring it is fully seated Slide the connector up to the threads and tighten to form a seal Slip the ceramic weight HI721008 and a connector over the other end of the hose Attach the foot valve assembly HI721005 to the hose and slide the connector up to the threads and tighten to form a seal ...

Page 15: ...e Hose to the Valve The end of the valve is specially tapered to form a leak free seal when the hose is properly installed Be sure to seat the hose completely so that there is no gap Push the hose until it covers the end of the valve completely Suction and Discharge Valves The suction and discharge valves located on the pump head should not be inter changed as they are different internally The dis...

Page 16: ...ems especially with high viscosity liquids Suction Lift Installation Suggested installation for most in line ap plications with nominal output and pressures The maximum self priming height is 1 5 m 5 ft It is advisable to install a level controller in order to stop the pump when feed tank reservoir liquid level is low Uphill Installation Suggested installation whenever the supply is located higher...

Page 17: ...els and with only nominal pressure START UP At start up purge all chemical gases and air from the suction tubing valves and pump head Start the pump When all the air or gas is vented the solution being metered will appear in the output line Note only when operating under pressure the pump must be started unloaded ...

Page 18: ...ONAL GUIDE OPERATIONAL GUIDE Unscrew and remove the transparent front panel cover and gasket seal for access to the terminals Remove the protective plastic plate covering the terminals by removing the 2 screws on both sides of the plate TERMINAL CONNECTIONS BL 7916 ...

Page 19: ...to 35 C 95 F range PROPORTIONAL SETTING The pump is supplied with a 10K resistor connected to these terminals With this value the pump works at 100 of the rating when the difference between measure and setpoint is more than 150 mV BL 7917 or 1 5 pH BL 7916 It goes into proportional dosing for values less than the above You can vary this hysteresis band by simply changing the resistor as follows BL...

Page 20: ... not dosing and closed when the pump is dosing or viceversa By shorting the Common middle terminal with the NO or NC terminal on the driving circuit inside the controller section a normally open or a normally closed state can be achieved as shown below ALARM CONTACT If the reading drifts from the setpoint by more than 2 00 pH in BL 7916 and 200 mV in BL7917 an external alarm can be activated The c...

Page 21: ...dosed move the ACID BASE switch to BASE This means that the pump will dose when pH measure ments are lower than the setpoint REDUCING OR OXIDIZING SELECTION BL 7917 only If a reducing chemical is to be dosed move the RED OXID switch to RED This means that the pump will dose when redox mea surements are higher than the setpoint If an oxidizing chemical is to be dosed move the RED OXID switch to OXI...

Page 22: ...e OFFSET trimmer to display 7 01 on the LCD Rinse the electrode with clean water and dip the electrode tip in pH 4 01 acidic or pH 10 01 alkaline buffer solution Adjust the slope trimmer to read 4 01 or 10 01 on the LCD The slope calibration with pH 4 01 buffer is suggested if the controller will be used for acid measurements or pH values below 7 pH 10 01 is in turn recommended for alkaline measur...

Page 23: ...he level controller is working or verify the connection on the terminals they must be short for the pump to dose LIQUID The pump operates but does not prime Check for a clogged or loose filter on the suction valve assembly Retighten if necessary Check to see if the pump is too high above the foot valve assembly HI721005 in the feed tank This vertical distance should not exceed 1 5 meters 5 feet Ei...

Page 24: ...each valve and clean it with a neutral liquid Inspect the Kynar springs After cleaning the glass balls inspect them for any excessive wear due to abrasion from the chemical Replace if necessary with parts from HI721102 HI721103 HI721004 and HI721005 see page 34 for listing When reinstalling the valves into the pump head tighten by hand first and then with a wrench to turn INSPECTING THE HOSE if us...

Page 25: ... 12 months It is recommended to replace HI721102 HI721103 suction and discharge valves assemblies as well as the O rings The LDPE hose can also deteriorate over time and for safety reasons should also be changed with HI720032 After 24 months It is recommended to replace HI721102 HI721103 HI720032 and HI721106 ...

Page 26: ...RODE CONDITIONING ELECTRODE CONDITIONING AND MAINTENANCE AND MAINTENANCE AND MAINTENANCE AND MAINTENANCE AND MAINTENANCE PREPARATION Remove the protective cap DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT This is normal with electrodes and they will disappear when rinsed with water During transport tiny bubbles of air may have formed inside the glass bulb The electrode cannot function properl...

Page 27: ...TORAGE To minimize clogging and assure a quick response time the glass bulb and the junction should be kept moist and not allowed to dry out This can be achieved by installing the electrode in such a way that it is constantly in a well filled with the sample stream or tank When not in use replace the solution in the protective cap with a few drops of HI70300 Storage Solution or in its absence HI70...

Page 28: ...TROUBLESHOOTING Evaluate your electrode performance based on the following Noise Readings fluctuate up and down could be due to Clogged Dirty Junction Refer to the Cleaning Procedure above Loss of shielding due to low electrolyte level in refillable electrodes only refill with HI7071 for single junction or HI7082 for double junction electrodes Dry Membrane Junction Soak in Storage Solution HI70300...

Page 29: ...ctrodes polish the metal tip with a lightly abrasive paper paying attention not to scratch the surface and wash thoroughly with water Note with industrial applications it is always recommended to keep at least one spare electrode handy When anomalies are not resolved with a simple maintenance change the electrode and recalibrate the controller to see if the problem is alleviated ...

Page 30: ...xidizing solution a monomolecular layer of oxygen is developed on its surface This layer does not prevent the electrode from functioning but it increases the response time The opposite effect is obtained when the platinum surface absorbs hydrogen in the presence of reducing mediums This phenomenon is rough on the electrode To make correct redox measurements the following conditions must prevail Th...

Page 31: ...rence electrode must be performed more often In order to have a correct functioning of the ORP electrode immerse it into HI 7020 and measure the response the obtained value should be within 200 and 275 mV After this functional test it is suggested to wash the electrode thoroughly with water and proceed to the oxidizing or reducing pretreatment before taking measurements When not in use the electro...

Page 32: ...per Chloride Copper Cyanide Copper Nitrate Copper Sulfate Corn Oil Cottonseed Oil Cresylic Acid Crude Oil Dextrose Detergents general Diesel Fuel Dictyl Phthalate Disodium Phosphate Ethanol 1 95 Ethylene Dichloride Ethylene Glycol Fatty Acids Ferric Chloride Ferric Nitrate Ferric Sulfate Ferrous Chloride Ferrous Sulfate Fluoboric Acid Fluosilicic Acid Formaldehyde Fruit Juice Pulp Fuel Oil Gallic ...

Page 33: ... Ferrocyanide Potassium Hydroxide Potassium Nitrate Potassium Permanganate 10 Potassium Phosphate Potassium Sulfate Propyl Alcohol Propylene Dichloride Sea Water Silver Nitrate Silver Plating Solutions Soaps Sodium Acetate Sodium Bicarbonate Sodium Bisulfate Sodium Bisulfite Sodium Borate Sodium Chlorate Sodium Chloride Sodium Cyanide Sodium Fluoride Sodium Hexametaphosphate Sodium Hydroxide 50 So...

Page 34: ... and 10 x Valve O Rings HI 721004 Injection Valve Assembly HI 721005 Foot Valve Assembly HI 721006 4 x Kynar Springs HI 720032 LPDE Hose 100 m 330 HI 721008 4 x Ceramic Weights CHECK BALL VALVE SEAT VITON O RING TUBE NUT HEAD NIPPLE SPACER Kynar is registered Trademark of Pennwalt Co CHECK BALL VALVE SEAT VITON O RING HEAD NIPPLE TUBE NUT CHECK BALL VALVE ASSEMBLY INJECTION NIPPLE KYNAR SPRING VAL...

Page 35: ...Solution 230 mL HI7009L pH 9 18 Buffer Solution 460 mL HI7010M pH 10 01 Buffer Solution 230 mL HI7010L pH 10 01 Buffer Solution 460 mL ORP SOLUTIONS HI7020M 200 275mV Buffer Solution 230 mL HI7020L 200 275mV Buffer Solution 460 mL HI7091M Pretreatment Reducing Solution 230 mL HI7091L Pretreatment Reducing Solution 460 mL HI7092M Pretreatment Oxidizing Solution 230 mL HI7092L Pretreatment Oxidizing...

Page 36: ...D pH ELECTRODES All electrodes are gel filled and with ceramic junction unless otherwise indicated HI 1090T Screw connector external PG13 5 thread double junc tion glass body HI 1110S Screw connector single junction glass body HI 1130B 3 BNC connector 3 m 9 9 cable single junction glass body with external thread HI 1110S HI 1130B 3 HI 1110T Screw connector external PG13 5 thread double junc tion g...

Page 37: ... 3 HI 1210T Screw connector external PG13 5 thread double junc tion Ultem body cloth junction HI 1910B BNC connector 1 m 3 3 cable double junction plastic body with built in amplifier and external thread HI 1912B BNC connector 1 m 3 3 cable double junction plastic body with built in amplifier and external thread HI 1912B 5 BNC connector 5 m 16 5 cable double junction plastic body with built in amp...

Page 38: ...tion Pt Ultem body with built in amplifier external thread and cloth junction HI 3110S Screw connector single junction Pt glass body HI 3130B 3 BNC connector 3 m 9 9 cable Pt glass body with external thread HI 3110S HI 3130B 3 HI 3110T Screw connector external PG13 5 thread double junction Pt glass body DIA 20 5mm 3 4 x 16 UNF DIA 12mm 110mm 38 5mm DIA 20 5mm 3 4 x 16 UNF DIA 12mm 110mm 38 5mm DIA...

Page 39: ...double junction Pt Ultem body with external thread HI 3410S HI 3430B 3 HI 3932B 5 BNC connector 5 m 16 5 cable double junction Pt Ultem body with built in amplifier and external thread GOLD ORP ELECTRODES HI 4110S Screw connector single junction Au glass body HI 4130B 3 BNC connector 3 m 9 9 cable single junction Au glass body with external thread HI 4110S HI 4130B 3 M13 x 1 5 DIA 16 mm 7 mm 25 mm...

Page 40: ...ansmitter HI 8614L pH Transmitter with LCD HI 8615 ORP Transmitter HI 8615L ORP Transmitter with LCD BL PUMPS Dosing Pumps with Flow Rate from 1 5 to 20 LPH HI 7871 Level Controllers HI 7873 HI 6050 Submersible Electrode Holders HI 6051 HI 6054 Electrode Holders for In Line Applications HI 6057 HI 778P Screened Coaxial Cable and Screw Connectors HI 8427 pH ORP Electrode Simulator HI 931001 pH ORP ...

Page 41: ...warranty you will be notified of the charges incurred If the instrument is to be returned to Hanna Instruments first obtain a Returned Goods Authorization Number from the Cus tomer Service department and then send it with shipment costs prepaid When shipping any instrument make sure it is properly packaged for complete protection To validate your warranty fill out and return the enclosed warranty ...

Page 42: ...SMITTERS TURBIDITY METERS Wide Range of Accessories Most Hanna meters are available in the following formats BENCH TOP METERS POCKET SIZED METERS PORTABLE METERS PRINTING LOGGING METERS PROCESS METERS Panel and Wall mounted WATERPROOF METERS METERS FOR FOOD INDUSTRY For additional information contact your dealer or the nearest Hanna Customer Service Center You can also e mail us at tech hannainst ...

Page 43: ...sure that they are entirely suitable for the environ ment in which they are used Operation of these instruments in residential areas could cause unacceptable interfer ence to radio and TV equipment Any variation introduced by the user to the supplied equipment may degrade the instruments EMC performance Unplug the instruments from power supply before replacing the fuse or making any electrical con...

Page 44: ...ITERATURE HANNA LITERATURE POOLS SPAS WATER ANALYSIS HANDBOOK ENVIROCARE GENERAL CATALOG These and many others catalogs handbooks and leaflets are avail able from Hanna To receive your free copy contact your dealer or the nearest Hanna Customer Service Center MAN7916R1 02 97 PRINTED IN PORTUGAL ...

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