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AMI Codes-II TC

Maintenance

A-96.250.631 / 280219

47

WARNING

Health hazard

Some reagents can cause severe burns or eye damage.

For safe handling of the reagents you must read and under-

stand the Material Safety Data Sheets (MSDS), see 

Material 

Safety Data sheets, p. 100

Oxycon On-line DPD

WARNING

Severe eye irritation and severe skin irritation.

Concentrated Oxycon On-line DPD contains more than 10% 

mineral acids.

Do not swallow.

Avoid any contact with eyes and skin.

Wear protective goggles,

Wear protective gloves.

IF IN EYES: Rinse cautiously with water for several minutes. 

Remove contact lenses, if present and easy to do. Continue 

rinsing.

Immediately call a POISON CENTER or doctor/ physician.

Oxycon On-line Buffer

Contains citric acid potassium salt, do not swallow.

Oxycon On-line KI

CAUTION

Severe eye irritation and skin irritation.

This product is corrosive and causes severe burns.

Harmful if swallowed.

Avoid any contact with eyes and skin

IF IN EYES: Rinse cautiously with water for several minutes. 

Remove contact lenses, if present and easy to do. Continue 

rinsing.

Содержание AMI Codes-II TC

Страница 1: ...AMI Codes II TC Version 6 20 and higher A 96 250 631 280219 Operator s Manual...

Страница 2: ...For any technical question contact your nearest SWAN representative or the manufacturer SWAN ANALYTISCHE INSTRUMENTE AG Studbachstrasse 13 8340 Hinwil Switzerland Internet www swan ch E mail support s...

Страница 3: ...9 3 3 1 FEP Tube at Sample Inlet 19 3 3 2 FEP Tube at Sample Outlet 20 3 4 Installation of Flow Cell 20 3 5 Install the Option pH 22 3 5 1 pH as Option ex works 22 3 5 2 pH Option as Retrofit Kit 23 3...

Страница 4: ...suring Total Chlorine 49 6 4 Verification 50 6 5 Calibration 51 6 6 Cleaning the protective Filter 54 6 7 Cleaning the Photometer 55 6 8 Cleaning the Flow Cell 56 6 8 1 Disassemble the Flow Cell 56 6...

Страница 5: ...2 75 8 3 Maintenance Main Menu 3 76 8 4 Operation Main Menu 4 77 8 5 Installation Main Menu 5 78 9 Program List and Explanations 80 1 Messages 80 2 Diagnostics 80 3 Maintenance 82 4 Operation 84 5 Ins...

Страница 6: ...y instructions are given throughout this manual at the respective locations where observation is most important Strictly follow all safety instructions in this publication Target audience Operator Qua...

Страница 7: ...w the prevention instructions carefully WARNING Severe injuries or damage to the equipment can occur if such warnings are ignored Follow the prevention instructions carefully CAUTION Damage to the equ...

Страница 8: ...0 631 280219 AMI Codes II TC Safety Instructions Warning Signs The importance of the warning signs in this manual Electrical shock hazard Corrosive Harmful to health Flammable Warning general Attentio...

Страница 9: ...ility for any claim resulting from unauthorized modification or alter ation WARNING Risk of Electrical Shock If proper operation is no longer possible the instrument must be disconnected from all powe...

Страница 10: ...ecommend to use the optional Cleaning module from Swan WARNING Health hazard Some reagents are etching and can cause severe burns or eye damage For safe handling of the reagents you must read and unde...

Страница 11: ...line Buffer Oxycon on line KI Disinfectant Measurement Operating Modes Two operating modes are available depending on the desired mea suring range Default mode Standard for concentrations up to 5 ppm...

Страница 12: ...on or remote off Special Feature Possibility to interrupt the measurement by activating the input See Program List and Explanation 5 3 4 p 97 Safety Features No data loss after power failure All data...

Страница 13: ...Term Comment tc1 Total chlorine 1 Immediate reaction of DPD KI mainly monochloramine tc2 Total chlorine 2 Reaction with DPD KI after 2 min reaction cdc Calculated dichloramine cdc tc2 tc1 pH T pH and...

Страница 14: ...Sample and reagent flow through the photometer J and total chlorine 1 is measured Total chlorine 2 To ensure the necessary reaction time of 2 min for the determina tion of total chlorine 2 the sample...

Страница 15: ...ometer inlet Peristaltic pump Mixing chamber Flow regulating valve Solenoid valve Inlet Filter I J K L M N O P Photometer air inlet Photometer Air bubble detector Reagent Oxycon on line DPD Reagent Ox...

Страница 16: ...formed Then the peristaltic pump starts and a small portion of the reagents L and M is pumped into the mixing chamber A short time after when the mixture is in the photometer the sole noid valve G is...

Страница 17: ...range of operation Storage and transport Humidity Display 10 to 50 C 25 to 65 C 30 to 85 C 10 90 rel non condensing backlit LCD 75 x 45 mm Sample requirements Flow rate Temperature Inlet pressure Outl...

Страница 18: ...hole distance Screws Weight 400x850x200 mm 374x824 5 mm or 6 mm diameter 12 0 kg 26 5 lbs without reagents and sample water 17 0 kg 37 5 lbs with reagents and sample water AMI Codes II TC 824 mm 32 7...

Страница 19: ...tter Peristaltic pump Reagent Oxycon on line DPD Reagent Oxycon on line Buffer Reagent Oxycon on line KI Temperature sensor pH sensor H I J K L M N O Constant head Flow regulating valve Sample inlet I...

Страница 20: ...Electrical Wiring Do not switch on the Instrument until all electrical connections are made Connect all external devices like limit switches current loops and pumps Connect power cord See Electrical C...

Страница 21: ...6 Washers 6 4 12 mm Mounting requirements The instrument is only intended for indoor installation For dimensions see Dimensions p 16 3 3 Connecting Sample and Waste 3 3 1 FEP Tube at Sample Inlet Use...

Страница 22: ...e 1 2 tubes F to the hose nozzles E and place it into a pressure free drain with sufficient capacity 3 4 Installation of Flow Cell CAUTION Fragile Part Handle the constant head tube with care To avoid...

Страница 23: ...the constant head tube C 2 Push the constant head tube into the flow cell block E 3 Put the constant head cover A onto the constant head tube 4 Check if the overflow tube B is aligned with the upper...

Страница 24: ...he pH sensor C by turning it clockwise 2 Store the protective cap in a safe place 3 Rinse the pH sensor tip with clean water 4 Insert the pH sensor into one of the holes in the constant head cover E 5...

Страница 25: ...I Codes II TC Installation A 96 250 631 280219 23 3 5 2 pH Option as Retrofit Kit A B C 2 Clamps with screws pH sensor Sensor cable D E F Frontend PCB Temperature sensor Short overflow tube A B C F E...

Страница 26: ...amps for calibration solution onto the panel Use the already drilled holes A 2 Stop sample flow Wait until flow cell is empty 3 Switch off the AMI transmitter disconnect power 4 Remove the constant he...

Страница 27: ...1 Feed the cable of the Temperature sensor through one of the cable glands into the AMI transmitter housing 12 Connect the temperature sensor cable to the plug as follows Terminal 19 line Terminal 20...

Страница 28: ...operate the instrument from an power outlet which has a ground connection Make sure the power specification of the instrument corre sponds to the power on site Cable thicknesses In order to comply wit...

Страница 29: ...ted to the following con tacts are disconnected from the power before resuming in stallation relay 1 relay 2 alarm relay WARNING To prevent from electrical shock do not connect the instrument to the p...

Страница 30: ...tallation 3 6 1 Connection Diagram CAUTION Use only the terminals shown in this diagram and only for the mentioned purpose Use of any other terminals will cause short circuits with possible correspond...

Страница 31: ...parts must be per formed by professionals NOTICE The protective earth wire Ground has to be connected to the grounding terminal Installation requirements The installation must meet the following requi...

Страница 32: ...load 1 A 250 VAC Alarm output for system errors Error codes see Troubleshooting p 65 NOTICE With certain alarms and certain settings of the AMI transmitter the alarm relay does not switch The error ho...

Страница 33: ...tatus of the relays described below For programming see Program Overview p 74 Menu Installation Relay config Terminals Jumper pos Description Relay configuration Normally Open 6 7 Relay 1 8 9 Relay 2...

Страница 34: ...in par allel to the load A snubber circuit is not necessary if an AMI relaybox is used Resistive load Resistive loads max 1 A and control signals for PLC impulse pumps and so on can be connected with...

Страница 35: ...ignal output 1 Terminals 14 and 13 Signal output 2 Terminals 15 and 13 For programming see Program Overview p 74 Menu Installation 3 10 Interface Options The slot for interfaces can be used to expand...

Страница 36: ...esponding installation instruction NOTICE Max burden 510 Third signal output 0 4 20 mA PCB 3 10 2 Profibus Modbus Interface Terminal 37 PB Terminal 38 PA To connect several instruments by means of a n...

Страница 37: ...consult the HART manual HART Interface PCB 3 10 4 USB Interface The USB Interface is used to store Logger data and for Firmware upload For detailed information see the corresponding installation instr...

Страница 38: ...4 1 Prepare Reagents 1 Prepare reagents See Refill or replace Reagents p 46 2 Insert the suction lances into the canisters 4 2 Peristaltic Pump The instrument is delivered with opened occlusion frame...

Страница 39: ...ater system 1 Open the flow regulating valve D and wait until the flow cell is completely filled 2 Switch on power 3 Adjust the sample flow so that always a small part of the sample drains off through...

Страница 40: ...parameters for external devices interface recorders etc Program all parameters for instrument operation disinfectant lim its alarms Program the DPD value of the Verikit in menu Installation Sensors R...

Страница 41: ...on Process DIS Let the instrument run for 1 h Use CHEMATEST or equivalent photometer to determine the sample disinfectant concentration Take the sample directly from the flow cell Determine the sample...

Страница 42: ...to move back to the previous menu level B to move DOWN in a menu list and to decrease digits C to move UP in a menu list and to increase digits D to open a selected sub menu to accept an entry Exit En...

Страница 43: ...40 ml D Keys locked transmitter control via Profibus E Time F Process values G Sample Temperature H Cleaning solution low indicates remaining cleaning solution in I Sample flow in B s K Relay status u...

Страница 44: ...that might need to be modified during daily routine Normally password protected and used by the process operator Subset of menu 5 Installation but process related Menu Installation 5 For initial inst...

Страница 45: ...w parameter is set 5 1 2 Sensors Sensor type FOME Temperature NT5K Standards Disinf Free chlorine 4 4 1 Logger Log interval 30 min Clear logger no 4 1 3 Logger Clear logger no Log interval 30min 1 Hou...

Страница 46: ...hooting p 65 Every 4 6 weeks Clean reagent canisters and prepare new reagents Let instrument run for 1 h Make 3 manual measure ments Compare average value to displayed value If nec essary perform proc...

Страница 47: ...ater 3 Remove the suction lances from the water 4 Start Fill system again The water will be pumped out of the reagent tubes 5 Stop sample flow 6 Wait until the flow cell is empty 7 Shut off power of t...

Страница 48: ...lected operating mode measuring range Stan dard Extended Below you will find some examples The provided reagent set is sufficient for 8 canister fillings canister almost empty Maintenance E065 Reagent...

Страница 49: ...any contact with eyes and skin Wear protective goggles Wear protective gloves IF IN EYES Rinse cautiously with water for several minutes Remove contact lenses if present and easy to do Continue rinsin...

Страница 50: ...without level detector canister 1 Suction lance with level detector canister 2 Level detector 2 L mark Canister 1 Oxycon on line DPD Canister 2 Oxycon on line Buffer Holder OXYCON ON LINE DPD Reagenz...

Страница 51: ...x the demineralized water and the reagents well 6 Put the canister E into the holder G 7 Remove the screw cover insert suction lance A and tighten the screw cover Prepare Oxycon On line Buffer KI 1 Ri...

Страница 52: ...nce Service Verification NOTICE Start any time if a measuring cycle is in progress wait for next prompt 1 Stop sample flow by closing regulating valve Wait for next prompt Constant head will be draine...

Страница 53: ...infec tant value by 3 manual DPD measurements Calculate the average value Compare this value to the value indicated by the AMI trans mitter Possible error message see Calibration Errors p 66 Zero A ze...

Страница 54: ...5 16 30 00 Calibration Simulation Cleaning Enter 3 1 2 Calibration Process pH Standard pH Total chlorine 2 Process pH Offset x mV Save Enter Process Value 7 78 pH 3 1 2 4 Current Value 7 78 pH Process...

Страница 55: ...dard 2 current value Progress is shown 5 Rinse and dry the pH sensor and put it into the flow cell Possible error message see Calibration Errors p 66 1 Navigate to menu Maintenance Calibration 2 Press...

Страница 56: ...e the main tap of the sample inlet 2 Close the flow regulating valve B 3 Unscrew the filter vessel E from the flow cell block A 4 Hold the filter D on the shaft C and unscrew it from the filter vessel...

Страница 57: ...op of Opera tion for Maintenance p 45 Material Small brush Procedure 1 Close the flow regulating valve A 2 Wait until the sample flow through the photometer has stopped 3 Unscrew the cover B from the...

Страница 58: ...rts Use soft detergent and rinse well Eliminate lime deposits with a common household deliming agent in standard concentra tion Do not drop the constant head tube 6 8 1 Disassemble the Flow Cell The f...

Страница 59: ...rts with a soft brush bottle cleaner and soapy water 6 Remove lime deposits with a common household deliming agent with standard concentrations 6 8 2 Assemble the Flow Cell 1 Replace the gasket D befo...

Страница 60: ...cell 2 Unscrew and remove the connector A from the pH sensor Prevent the connectors from getting wet 3 If necessary wipe the pH sensor shaft and the green tip cau tiously with a soft clean and damp p...

Страница 61: ...of reagents possible If the occlusion frames are opened during operation already mixed reagents will flow back into the reagent canisters and pol lute the reagents Never open the occlusion frames if t...

Страница 62: ...by pulling the complete occlusion frames B out of the holder Install new pump tubes 1 Disconnect the reagent tubes from the old pump tubes and con nect them to the new pump tubes 2 Install the new pum...

Страница 63: ...4 4 M N Nr from to 1 Pump outlet rear frame Flow cell block connection 1 see Flow cell block side view Q 2 Pump outlet front frame Flow cell block connection 2 see Flow cell block side view Q 3 Reagen...

Страница 64: ...of the flow cell block The solenoid valve should be disassembled if it does not switch anymore or if it is clogged 1 Switch off the instrument according to instructions in Stop of Operation for Maint...

Страница 65: ...r NOTICE The O rings inside the valve body may stick on the flow cell and fall down if the valve body is removed 5 Remove the valve body from the flow cell 6 Remove the base plate G with a screw drive...

Страница 66: ...7 Shut off power of the instrument 8 Empty the flow cell completely 9 Open the occlusion frames of the peristaltic pump see Replace the Pump Tubes p 59 If option pH is installed 10 Unscrew and remove...

Страница 67: ...tometry 10 000 16 000 Hz mostly near 16 000 Hz Slope photometry 0 8 1 2 pH offset New pH sensor near 0 old pH sensor 50 mV pH slope typically 55 62 mV pH unit Frequently asked questions Problem Possib...

Страница 68: ...sively Possible cause Corrective Action Manual measurement wrong Repeat the manual measurement Slope of last calibration wrong pH sensor dirty old or defect Clean or replace pH sensor see Maintenance...

Страница 69: ...rors which indicate a hardware failure of the instrument Such Errors are marked E0xx bold and red Error or fatal Error Error not yet acknowledged Check Pending Errors 1 1 5 and take corrective action...

Страница 70: ...value see 5 3 1 1 2 1 p 91 E004 Alarm low tc2 Total chlorine 2 check process check programmed value see 5 3 1 1 2 25 p 91 E005 Alarm high cdc check process check programmed value see 5 3 1 1 3 1 p 91...

Страница 71: ...emp high check case environment temperature check program value E014 Case Temp low check case environment temperature check program value E015 Valve 1 defective check Valve 1 see Cleaning the solenoid...

Страница 72: ...s p 46 E023 Cleaning Solution refill cleaning solution E024 Input active See If Fault Yes is programmed in Menu 5 3 4 p 97 E026 IC LM75 call service E028 Signal output open check wiring on signal outp...

Страница 73: ...ay upper status line The number next to the triangle indicates the remaining reagents in Refill reagents on time See Refill or replace Reagents p 46 E067 Cleaning Solution Operating display lower stat...

Страница 74: ...r according to Stop of Operation for Main tenance p 45 2 Remove the protection cap and all pump tubes as described in Dismount pump tubes p 60 3 Unscrew the 4 screws of the peristaltic pump housing an...

Страница 75: ...ed from the power before resuming in stallation relay 1 relay 2 alarm relay When a fuse has blown find out the cause and fix it before replacing it with a new one Use tweezers or needle nosed pliers t...

Страница 76: ...nu 3 Maintenance is for service Calibration simulation of outputs and set time date Please protect with password Menu 4 Operation is for the user allowing to set limits alarm values etc The presetting...

Страница 77: ...Sensors Photometer Absorbance 2 2 2 2 1 Raw value Hz Cal History Number 2 2 1 4 1 2 2 1 4 Date Time Factor fc Factor tc Ver History Number 2 2 1 5 1 2 2 1 5 Date Time Absorbance Reference value pH Ele...

Страница 78: ...ogress 3 1 3 5 3 1 3 Service Verification Progress 3 2 1 1 3 2 3 2 1 Fill System Progress 3 2 2 5 3 2 2 Simulation Alarm Relay 3 3 1 3 3 Relay 1 3 3 2 Relay 2 3 3 3 Signal Output 1 3 3 4 Signal Output...

Страница 79: ...2 45 Calc Dichl Alarm High 4 2 1 3 1 4 2 1 3 Alarm Low 4 2 1 3 25 Hysteresis 4 2 1 3 35 Delay 4 2 1 3 45 Alarm pH Alarm High 4 2 1 4 1 4 2 1 4 Alarm Low 4 2 1 4 25 Hysteresis 4 2 1 4 35 Delay 4 2 1 4...

Страница 80: ...Contacts Alarm Relay Disinfection Total chlorine 1 Alarm High 5 3 1 1 1 1 5 3 5 3 1 5 3 1 1 5 3 1 1 1 Alarm Low 5 3 1 1 1 25 Hysteresis 5 3 1 1 1 35 Delay 5 3 1 1 1 45 Total chlorine 2 Alarm High 5 3...

Страница 81: ...5 3 4 1 5 3 4 Signal Outputs 5 3 4 2 Output Control 5 3 4 3 Fault 5 3 4 4 Delay 5 3 4 5 Miscellaneous Language 5 4 1 Menu numbers 5 4 Set defaults 5 4 2 Load Firmware 5 4 3 Password Messages 5 4 4 1...

Страница 82: ...rror is cleared to save the newest error circular buffer 2 Diagnostics In diagnostics mode the values can only be viewed not modified 2 1 Identification Designation View the Designation of instrument...

Страница 83: ...hows the current temperature in C inside the transmitter 2 3 Sample 2 3 1 Sample ID Shows the identification assigned to a sample This identification is defined by the user to identify the location of...

Страница 84: ...rrection of pH electrode See Process Calibration of tc 2 p 51 for details 3 1 3 Standard pH Only available if option pH has been installed Calibration of pH electrode with the two standard solutions p...

Страница 85: ...daily weekly or off 3 5 1 xx Start time Calendar Time of day respectively weekday s for the automatic start of the cleaning process 3 5 1 3 Delay During cleaning plus the delay time the status of the...

Страница 86: ...l outputs are frozen held on last valid value alarm values limits are not active Range 0 6 000 sec 4 1 3 Meas Interval The measuring interval of Total chlorine 2 can be set according to the process re...

Страница 87: ...isplay Process values are displayed on two screens Toggle screens with the key Each screen displays max 3 process values 4 4 1 Screen 1 4 4 1 1 Row 1 4 4 1 2 Row 2 4 4 1 3 Row 3 Possible settings for...

Страница 88: ...in the menu Signal Output 1 and Signal Output 2 is equal For reason of simplicity only the menu numbers of Signal Output 1 are used in the following 5 2 1 1 Parameter Assign one of the process values...

Страница 89: ...In addition the midpoint for the bilinear scale Parameter Total chlorine 1 5 2 1 40 10 Range low 0 20 ppm or 0 20 mg l 5 2 1 40 20 Range high 0 20 ppm or 0 20 mg l Parameter Total chlorine 2 5 2 1 40...

Страница 90: ...y the P Band In the steady state the setpoint will never be reached The deviation is called steady state error Parameters setpoint P Band PI controller The combination of a P controller with an I cont...

Страница 91: ...to 0 to reach the set point without overshooting 5 2 1 43 Control Parameters if Parameters Total chlorine 1 5 2 1 43 10 Setpoint 0 20 ppm or 0 20 mg l 5 2 1 43 20 P Band 0 20 ppm 0 20 mg l 5 2 1 43 Co...

Страница 92: ...uddenly reached by a D controller Range 0 9 000 sec 5 2 1 43 5 Control timeout If a controller action dosing intensity is constantly over 90 during a defined period of time and the process value does...

Страница 93: ...2 1 Alarm High If the measured value rises above the alarm high value the alarm relay is activated and E003 is displayed in the message list Range 0 00 20 00 ppm 5 3 1 1 2 25 Alarm Low If the measured...

Страница 94: ...value E008 is issued Range 0 20 C 5 3 1 3 Sample Flow Define at which sample flow a flow alarm should be issued 5 3 1 3 1 Flow Alarm Program whether the alarm relay should be activated if there is a f...

Страница 95: ...ove the programmed value E013 is issued Range 30 75 C 5 3 1 6 Case Temp low Set the alarm low value for temperature of elec tronics housing If the value falls below the programmed value E014 is issued...

Страница 96: ...nge 0 600 sec The relays may be used to drive control units such as solenoid valves membrane dosing pumps or motor valves When driving a motor valve both relays are needed relay 1 to open and relay 2...

Страница 97: ...free triggering input Dosing is controlled by the repetition speed of dosing shots 5 3 2 32 21 Pulse frequency Max pulses per minute the device is able to re spond to Range 20 300 min 5 3 2 32 31 Con...

Страница 98: ...day 5 3 2 341 Start time to set the start time proceed as follows 1 Press Enter to set the hours 2 Set the hour with the or keys 3 Press Enter to set the minutes 4 Set the minutes with the or keys 5...

Страница 99: ...rval The relay will be switched via the Profibus input No further param eters are needed This function is only available on relay 2 It is used to communicate with canal switching instruments from thir...

Страница 100: ...values are kept in memory In parts Communication parameters are kept in memory All other values are set back to default values Completely Sets back all values including communication parameters Cont...

Страница 101: ...5 4 6 Line Break Detection Define if message E028 should be issued in case of a line break on signal output 1 or 2 Choose between Yes or No 5 5 Interface Select one of the following communication prot...

Страница 102: ...ailable for downloading at www swan ch Catalogue No Product name A 85 410 120 OXYCON ON LINE DPD Catalogue No Product name A 85 410 120 OXYCON ON LINE Buffer Catalogue No Product name A 85 419 200 OXY...

Страница 103: ...Clear Logger no Display Screen 1 and 2 Row 1 Total chlorine 1 Screen 1 and 2 Row 2 Total chlorine 2 Screen 1 and 2 Row 3 None Installation Sensor Dimension ppm Ref Verification 0 255 Meas Range Standa...

Страница 104: ...Alarm Low 5 C Sample Flow Flow Alarm yes Sample Flow Alarm High 500 B s Sample Flow Alarm Low 10 B s pH Alarm high 14 00 pH pH Alarm low 0 00 pH pH Hysteresis 0 10 pH pH Delay 5 Sec Case temp high 65...

Страница 105: ...rameters Setpoint 200 B s Settings Control Parameters P band 20 B s Parameter pH Settings Actuator Frequency Settings Pulse Frequency 120 min Settings Control Parameters Setpoint 7 pH Settings Control...

Страница 106: ...ut Control cont Input Active when closed Signal Outputs hold Output Control off Fault no Delay 10 Sec Miscellaneous Language English Set default no Load firmware no Password for all modes 0000 Sample...

Страница 107: ...iring 18 F Fill System 38 82 Flow Alarm 65 92 Fluidics 12 H HART 35 I Input 10 30 Instrument Setup 18 Interface HART 35 Modbus 34 Profibus 34 USB 35 Interrupt measurement 10 L Logger 84 101 M Measurem...

Страница 108: ...1 92 Sample requirements 15 Signal Outputs 9 33 86 Simulation 82 Slope photometry 65 Software 42 Solenoid valve 62 Standard pH 53 82 T Terminals 28 30 31 34 Tube numbering 61 U USB Interface 35 V Ver...

Страница 109: ...AMI Codes II TC Notes A 96 250 631 280219 107 13 Notes...

Страница 110: ...ry companies and distributors cooperates with independent representatives all over the world SWAN Products Analytical Instruments for High Purity Water Feedwater Steam and Condensate Potable Water Poo...

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