NEXUS.4000 Con/Temp Conductivity & Temperature Analyzer
Contents
1. om Figure 6 Encumbrance and Dima for perforation of the panel Mechanical Dimensions Dimensions L x H x P 96x96x115 5mm Fixing depth UV Resistano Policarbonate Fixing of the Gear case to the panel is carried out using two brackets 1 included in the standard supply which are inserted into the housings 2 and fixed into position using the relative screws 3 1 2 i 4 BY as Figure 7 Fixing bracket of the Gear case to the Panel Keep free from dripping and or sprays of water from adjacent areas 0000137715 Rev 2 0 16 3 1 3 CONNECTIONS TO THE POWER SUPPLY If possible avoid any cables destined for high power use to be positioned close to the device as they may cause faults of an inductive nature to the analogical section of the instrument Apply a tension alternating between 85Vac and 265Vac 50 60 Hz 24Vac dc optional according to details on the identification plate the most stabilised tension possible Avoid at all costs connections to power supplies that have been rebuilt for example with the help of transformers in which this rebuilt power supply will feed other systems beyond the device perhaps of an inductive kind because in this way high tension spikes will be created and once they are irradiated 1 becomes very difficult to block and or eliminate them CAUTION The electric line must be fitted with a suitable life saving device and magneto thermal in compliance2. contac 1 a b Figure 8 Examples of connection with users NOTE wil The layouts indicated above are typically indicative as details of all of the protection and Am safety devices necessary are missing 3 1 3 1 1 Connection terminal box for wall mounting shield conductivity cell PT100 PT1000 NTC fa aN N 1 42 ww 20 N y Y N N 4 20 1 F 4 N D 7 SET 1 SET 2 ALARM WASH TEMP 1 TEMP 2 HOST INPUT 100 240 Vac 2 Electr cond cell 4 Electr cond cell Figura 9 Terminal box for wall mounting model DESCRIPTION oT Power supply Earth 2 L Power supply Phase 3 N Power supply Neutral 5 12v Probe Supply 12V Digital input Ag INPUT Digital input T s thue ESA HOST RS485 B koe Relay for Wash and Temp N C contact Relay for Wash and Temp N O contact Relay for Alarm and Temp N C contact TEMP 1 Relay for Alarm and Temp N O contact Relay for Set Point 2 N C contact Relay for Set Point 2 N O contact n ALARM 0000137715 Rev 2 0 18 0000137715 4 4 Relay for Set Point 1 N C contact 2 OUT PTIOD PTIOO0 SgmiReumi 4Wig y O Signal Rewum 2 Wis Driving 2 4 Wires signal 1 2 Wires 2 Electr cond cell Signal 1 2 Wires signal 2 2 Wires signal 2 2 Wires RS485 mA WASH ALARM H
3. 0 0 mS 2 15 WASH SET TEMP 2 Interval CLOSED 00 00 00 0 0AmS Permanen Time 00 00 00 000 Sec 000 Sec Duration Stabilization F1 Set Point2 The programming parameters of Set Point 2 determine the functioning logic of Relay 2 This Relay may only be programmed as a Threshold Programming of threshold 2 15 identical to the one described for Threshold 1 F2 Logical Set The parameters of the Logical Set determine the functioning of the Alarm Relay This function 1s deactivated by default This function activates an alarm when the measuring values are located outside of a specific window It is in reality possible to programme a minimum value and a maximum value and once they are exceeded the instrument will generate an alarm This function will allow an alarm to be activated if the measure values are over a certain range In fact it is possible to program minimum and a maximum value when exceeded the equipment will generate an alarm This Logical Set 15 useful to control any possible faults to the system eg Defects in the dosage pumps etc F3 Alarm Set Temp 1 With this function the basic settings of the Alarm Relay are defined all of which are handled by the anomaly conditions inside and outside of the instrument Considering the importance of this Relay we recommend that it is connected to a visual and acoustic signal which should always be kept under control by personnel in charge of running the
4. PARAMETERS THE USE OF KEYS In order to introduce modify operative figures and to carry out calibration procedures use the menus visualised on the display through the 4 function keys located on the front panel of the device When turned on the apparatus will automatically position itself in a measuring method the RUN function By pressing the ESC key the programming method will be available through the first menu SETTINGS Using the UP and DOWN keys the various menus and submenus can be scrolled and information can be modified increase reduction Using the ENTER key access will be provided to the submenus for the input of information and the variations made will be confirmed By pressing the ESC key the screen will go back to the menu or to the previous function and any variations made will be cancelled 0000137715 Rev 2 0 22 4 3 1 SETUP MENU TEMPERATURE SYSTEM SETUP 1 0 IMPOSTAZIONI DOWN Temperature Setup System Digital Input Digital Input Range Range Constance cell Constance cell 1 10 TEMPERATURE emp Comp 1 23 SETUP SYSTEM 1 241 PASSWORD Language Password State 1 20 SETUP SYSTEM Communication UP DOWN ENTER Password 0 English 1 240 PASSWORD Password State Serial Number UP DOWN 1 20 SETUP SYSTEM Communication Language 1 240 PASSWORD ENTER New Password UP DOWN Display Serial Number ENTER UP DOWN 1 250 DISPLAY 1 242 P
5. Sr ee TERON wore bedia O24 LI iv v L tenda m Conducibilit C e Figure 12 Maximum Configuration 0000137715 Rev 2 0 24 4 2 4 2 1 4 2 1 1 4 3 START UP OF THE SYSTEM Once the electronic device and the measuring probe Conductivity have been connected programming of the software must be carried out in order to determine personalisation of parameters for correct use of the equipment Turn on the equipment by connecting it to the mains the device does not have a power supply switch MENU FUNCTIONS AT START When the equipment 15 turned on it 15 possible to use some keys to intervene on programming functions not present in the SETUP See paragraphs 4 3 1 4 3 2 4 3 3 Contrast adjustment Using the same procedure but keeping the DOWN button pressed the display contrast adjustment window will appear NOTE During this operation release the DOWN button immediately after the first acoustic beep otherwise the contrast will go quickly to 0 and the display will be completely white In Em order to reset the correct level simply press the UP key to the desired value ud Using the UP and DOWN keys it 15 possible to adjust the contrast percentage Contrast Control 1 ISETzI LEM LE Figure 13 Contrast Function Flow Chart Subsequently pressing ENTER the RUN visualisation will be activated INTRODUCTION OF OPERATIVE
6. activated each time that the programming stage 1s accessed the access password will be requested The password is made up of a 4 figure number The default 15 2002 which will always remain active even if a new password is programmed In order to access the step Password Status or New Password the existing password must be inserted and then the new input can be carried out DISPLAY Contrast It allows for the definition of a greater or lower contrast of the display according to the temperature in which the instrument 15 operating Background illumination At this stage you can decide whether or not to maintain background illumination or to switch it off one minute after having released the key By programming YES the background illumination stays on by programming ON it switches off automatically NO 15 programmed as a default SERIAL NUMBER In this part of the programme the serial number of the instrument 15 shown SETUP MENU DIGITAL INPUT RANGE ENTER DOWN 1 0 SETUP Temperature Setup System Range Constance cell B2 B1 ENTER C1 ENTER 1 50 DIGITAL INPUT 1 30 DIGITAL INPUT 1 4 SETUP ON 0 20 00 mS B1 Digital input ID In this function it 1s possibile to assign the digital input Setting OPEN RLY the digital input is assigned to the SET POINT disabilitation 0000137715 Rev 2 0 24 setting WASH the digital input 1s assigned to the WASH B2 Digital input Active In this fu
7. altogether and it includes 15 seconds for control of the solenoid valve closing of the washing relay and 45 seconds for stabilisation of the probe RELAY ABILITATION Within this function it is possibile to assign the relay Setting YES means that the relay works as wash Setting NO the relay is automatically assigned as temperature 0000137715 Rev 2 0 29 4 3 6 4 3 7 INTERVAL With this function it 1s possible to set the interval of time between one washing stage and the next Immediately before it starts the instrument memorizes the values of the measurements the state of Relay 1 and 2 and the values of the analogical outlets and it keeps them frozen for the entire duration of the washing cycle This situation 15 highlighted on the display using an hourglass and furthermore instead of the measuring value a counter appears indicating how many seconds are left until the washing stage 1s completed By default this function 1s deactivated as a time of 00 hours and 00 minutes 1s programmed The maximum interval that can be programmed 15 24 hours at steps of 15 minutes DURATION Within this function it 1s possibile to set the duration 1n seconds of the washing period STABILIZATION Within this function it is possibile to set the time in seconds needed to the stabilize the wash OUTPUTS MENU SET POINT TEMP 2 0 OUTPUT 2 1 RELAY OUTPUT WE mA Set Point 1 Set Point 2 Set Current Output Logic Set Wa
8. different languages made by distributors or users themselves Compliance with the operative procedures and the precautions described in this manual is an essential requirement for the correct operation of the instrument and to guarantee total operator safety The manual must be ready in all parts in front of the instrument before use so that all methods of operation are clear as well as the controls connections to the peripheral equipment and precautions for a correct and safe use The user manual must be stored integral and legible in all parts in a safe place and at the same time it must be immediately accessible to the operator during installation use and or installation revision operations 1 1 1 CONVENTIONS The present user manual uses the following conventions NOTE The notes contain important information to be highlighted compared with the rest of the text They generally contain information that is useful to the operator to carry out and optimise operative procedures of the equipment in a correct manner CAUTION Caution messages appear in the manual before procedures or operations that must be observed in order to avoid any possible losses of data or damages to the equipment CAUTION Caution messages appear in the manual in correspondence to the description of procedures or operations that if carried out incorrectly may cause damages to the operator or users 0000137715 Rev 2 0 1 1 2 DECLARATION OF RES
9. plant in order to intervene immediately in the case of a signal Programming of the Alarm Relay 15 articulated into 6 functions therefore allowing for external anomalies measuring electrode and dosage systems as well as internal anomalies to be kept under control Description of the functions RELAY ABILITATION Within this function it is possibile to assign the relay setting YES means that the relay works as an alarm Setting the relay is automatically assigned as temperature 0000137715 Rev 2 0 28 SET RELEASE With this function it is possible to deactivate or activate dosages in the case of an alarm By programming Y ES when any kind of alarm is activated the Relay and 2 contacts will open up immediately and the analogical outlets 1 and 2 will be cancelled By programming NO even in the case of activation of the alarm the Relay contacts and the analogical outlets will not change their position YES 15 set as a default RELAY LOGICS The Alarm relay 15 ON OFF alarm and with this function it 1s possible to programme 1 opening closing logic CLOSED 15 set as a default By setting CLOSED the Alarm relay will be opened in normal working conditions and will close in the event of an alarm By setting OPEN it will work in exactly the opposite way The Alarm relay will close in normal working conditions and will open in the event of an alarm Furthermore by setting OPEN it 1s also possible to control
10. with correct installation norms In any case it 1s always best to check the quality of the Ground connection It is very common to find Ground connections mainly in industrial environments that are generators themselves of disturbances in the case of any doubts on quality a connection to a rod dedicated to the device plant is recommended 3 1 3 1 Electrical Connections to the dosage systems Users CAUTION electrical panel is switched off and the cables from the Users are not under tension Before starting connections between the Device the external Users make sure that the Users mean the outlets and relays used in the device SET1 for the Dosage Pump or control command SET2 for the Dosage Pump or control command ALARM the alarm command transmitted by the instrument to the siren and or flashing light WASH electrode washing command CAUTION Each relay contact can support on a resistive load a maximum current of 1 Ampere with a max of 230V therefore a total power of 230VA In the case of higher levels of power it 1s best to carry out connections as indicated in the layout of fig 7 b If the load to be handed is of low power or of a resistive nature the layout indicated in Fig 7 a can be used 0000137715 Rev 2 0 17 Loads lower then 230VA Loads higher then 230VA Remote control switch Relay Power supply J 7 Power supply SET1 contac O SET1
11. 1 5 CAUTION SYMBOL The symbol illustrated below represents the CAUTION symbol and reminds the operator that he should read the user manual for important information advice and suggestions for the correct and safe use of the equipment In particular when it is positioned close to connection points to cables and peripheries the symbol in question refers to careful reading of the user manual for instructions related to the nature of such cables and peripheries and the methods for correct and safe connections For the position of the CAUTION symbols on the equipment refer to Chapter 2 Commands and Indicators Connections and Chapter 3 Installation of this user manual The reproductions of equipment panels with relative commands connections symbols and labels are provided in this chapter Each caution symbol 15 accompanied by a detailed explanation of its meaning 0000137715 Rev 2 0 4 1 6 1 7 1 7 1 PLATE DETAILS SN XXXXXXX Volt 100 240 Vac dc Hz 50 60 INFORMATION ON RECYCLING AND USE OF MATERIALS The supplier in accordance with specific European regulations aims at constant improvement of development and of production procedures of its equipment with the objective of drastically reducing the negative impact on the environment caused by parts components consumption materials packaging and the equipment itself at the end of its life cycle Packaging 15 conceived and produced to allow for its re use or recove
12. 3 1 CALIBRATIONS COND 3 1 CALIBRATIONS COND First Calibration 3 1 CALIBRATIONS COND First Calibration First Calibration ait Stabilization 00 00 uS ENTER 00 10 uS Press ENTER ENTER 3 1 CALIBRATIONS COND 3 1 CALIBRATIONS COND Second Calibration Second Calibration Second Calibration ait Stabilization ENTER Insert Probe ENTERITemperature Press ENTER 08 98 uS 026 C ENTER 3 1 CALIBRATIONS COND 3 1 CALIBRATIONS COND 3 1 CALIBRATIONS COND Second Calibration Calibration OK alue ENTER Press ENTER 10 00 uS IF THE PROBE IS FAULTY lt 3 4 CALIBRATIONS COND 3 4 CALIBRATIONS COND 3 4 CALIBRATIONS COND Second Calibration Second Calibration Second Calibration ENTER Reset Default ENTER Default Values Press ENTER Are you sure I1 Automatic system The conductivity calibration foresees two calibration points 1 1 1 The first calibration must be done at OuS After inputting the temperature compensation value if the conductivity probe 15 temperature compensated the temperature value will be read automatically press ENTER key and dip the probe into a solution at OuS or expose it to air after proper drying Press ENTER 1 1 2 Wait for the displayed value read by the probe to stabilize then press ENTER 0000137715 Rev 2 0 32 1 1 3 The instrument will display the 0000 5 value automatically Press ENTER I 1 4 and 1 1 5 Calibrate the second point as per the fir
13. A according to the NAMUR standard The default of this function 15 deactivated 4 38 CALIBRATIONS MENU This programme phase allows for the instrument calibration with the electrode used Calibration must be carried out When starting the measure instrument electrode chain the first time Every time the electrode is replaced When starting the instrument after a long inactivity period Inthe case of any discrepancies compared with the known value For granting a proper working further to the above mentioned conditions it will be required to check the calibration of or to recalibrate the instrument periodically User will determine the frequency of this operation keeping into account the application and the electrode use NOTE We remind you that before carrying out any checks or recalibrations the electrode must be cleaned thoroughly with clean water making it stabilizing for at least 30 minutes on the atmosphere or into the known title solution Descriptions of the calibration functions 3 0 CALIBRATIONS 3 0 CALIBRATIONS Conductivity From this menu it is possible to choose the type of calibration Conductivity or Temperature 0000137715 Rev 2 0 31 4 3 8 1 Conductivity calibration 3 0 CALIBRATIONS 3 1 CALIBRATIONS COND UP 3 1 CALIBRATIONS COND Automatic JIDefault Reset ENTE Default Values Are you sure DOWN ENTER 3 1 CALIBRATIONS COND First Calibration 11 2 11 3
14. ASSWORD 88 New Password 1 20 SETUP SYSTEM Communication ENTER Password 0 UP DOWN 1 20 SETUP SYSTEM Communication 1 26 SETUP SYSTEM ENTER Serial NO 12345 1 Temperature The Unit of Measurement function allows for the value of the temperature to be visualised in Centigrade or Fahrenheit Centigrades are set as a default A2 Setup System In this part of the programme which is divided up into 5 functions the basic functioning parameters of the instrument are set 0000137715 Rev 2 0 23 4 3 2 ID Dis SET Description of the functions COMMUNICATION The instrument has a serial port in RS485 which 1s separated galvanically and can be used for dialogue with a HOST system using the standard protocol MOD BUS RTU Through the serial port it 15 possible to visualise the real time status programme all of the Set Up and downloading all of the archives of the instrument The Communication Set up function 15 used to programme the serial port and 15 divided up into two settings ID Instrument A numerical address from 1 to 99 to which the instrument will reply The default 15 01 Baud Rate Speed of the RS485 serial which can be programmed at between 1200 and 38400 The default 15 9600 LANGUAGE It 1s possible to select the language used by the Software between Italian English French Spanish and German PASSWORD At this stage 1 1s possible to activate and programme for access to the instrument Once
15. CONDUCTIVITY AND TEMPERATURE ANALYZER TECHNICAL MANUAL 0000137715 Rev 2 0 INDICE L GENERAL SG cadet esce eeu freie cop eie eu ces 1 1 1 INFORMA TON ON THE MANUA D the Eur ctt red oae t eet eme ta ere de Pee res 1 1 1 1 CONTENTION eT ee men ene me 1 1 2 DECLARATION OF RESPONSIBILITY BY THE MANUFACTURER 2 1 3 LIMITS OF USE AND PRECAUTIONS FOR SAFETY 9 1 3 1 CT RIC AL SAP ETY 2 15902 SAFETY OF THE OPERATIVE ENVIRONMENT inta ics etd eed pee dpa oae lt de RD Ere aeos p o vut 3 1 4 adu Bis S 4 1 5 CAUHON SYMBOL 4 1 6 PELATEDE CIE CE LER A LE MIA LIT E PERS UA 5 1 7 INFORMATION ON RECYCLING AND USE OF 8 5 AN SPEGCIAE ATTENTION TO CRITICAL COMPONENJS b 5 1 8 COMPLIANCY DEGCILARB AX EIOBN i rnc t REPE dnd ERRORE IL SEGNALIBRO NON DEFINITO 2 GENERAL DESCRIPTION 5 eieececeoeexeh EEEE E E 6 21 MEASURING PRINCIPLE S te tb dex eade DEAE A a ac er 6 2 2 EEIBRIS EIOS 3 idit oto 7 D d TECHNICAL CHARACTERISTICS FOR COND
16. ION SAN 35 5 USER MAINTENANCE e EN 36 5 1 SPECIAbCAUTIONS POR CRITICAL COMPONENT Ss iiri Rd NURSE E E EE uu 36 WARRANTY ueneno ie ema ERRORE IL SEGNALIBRO NON E DEFINITO 7 REQUEST FOR ASSISTANCE e eere eee eene eee eate ERRORE IL SEGNALIBRO NON E DEFINITO 7 PROCEDURE OF REQUEST FOR TECHNICAL ASSISTANCE TECNICAERRORE IL SEGNALIBRO NON D Ju MAINCHEMITEC OFFICE ee es bari gue ERRORE IL SEGNALIBRO NON DEFINITO 0000137715 Rev 2 0 1 GENERAL 1 1 INFORMATION ON THE MANUAL This document contains reserved information It may be subject to modifications and updates without any prior notice This manual is an integral part of the instrument Upon initial installation of the equipment operator must carry out a careful control of the contents of the manual in order to check its integrity and completeness If for any reason it 1s ruined incomplete or inadequate please contact the supplier in order to reintegrate or replace the non compliant manual immediately The official versions of the machine for which supplier 15 directly responsible are the ones in Italian and in English For countries of different languages from the ones indicated above the official manual will remain the one in Italian The supplier will not be held responsible for any possible translations in
17. N Before installing the device carefully read the instructions provided below 3 1 COMPOSITION OF THE SUPPLY The supply consists of just one package which contains the following parts e electrical control and command panel PN 2 Technical Manual PN 2 3 1 1 INSTALLATION OF WALL MOUNTED DEVICE The wall must be completely smooth in order to allow for perfect adhesion of the device 144 Figure 5 Dimensions encumbrance of the wall mounted device Dimensions L x H x P 144x144x122 5mm Fixing depth 122 5mm Mounting Policarbonate UV Resistant Open the instrument open the pre shaped holes and fix the instrument itself to the wall Use the provided plastic caps to close the holes The terminal box for connections is located on the bottom of the gear case and it 15 necessary to keep it separated from other equipment by at least 15 cm in order to make it easier to use Keep away from water drips and or sprays of water from adjacent areas in order to safeguard the instrument during programming or calibration stages 0000137715 Rev 2 0 15 3 1 2 INSTALLATION OF THE GEAR CASE INTO THE ELECTRICAL PANEL The wall must be perfectly smooth in order to allow for perfect adhesion of the electrical panel close to the gear case The net depth of the panel must be at least 130 mm The thickness of the panel must not exceed 5 mm The perforation DIMA must comply with the following layout
18. OST OUTI TEMP 2 TEMP 1 SET 2 SET 1 T T Y 3 7 L 7 8 A ki 7 13 4 15 6 17 8 19 00 21 22 23 Q4 a UE 4 M 7 cell PT100 PT1000 NTC v 2 Electr cond celi Figura 10 Panel mounting terminal box Rev 2 0 19 T 1 2 __ MEN NEU RS485 B HOST RS485 2 TEMP 1 rey 123 PTIO PTICOO r TLHr 4 100 1000 Signal Cable PT100 PT1000 Common Cable Signal 2 2 Wires 2 Electr cond cell signal 2 2 Wires Signal e 1 2 Wires Signal 1 2 Wires 3 1 3 2 Connections to the Power Supply Once you have made sure that the tension complies with the one indicated in the previous paragraphs connect the electrical power line to the clamps marked by connecting the clamp with the relative symbol to earth 3 1 4 CONDUCTIVITY PROBE CONNECTION Switch the instrument off Connect the electrode cables to the meter terminal box Observe the number codes on the adhesive label placed under the electronics container cover or refer to the manual see 3 1 3 1 1 e 3 1 3 1 2 0000137715 Rev 2 0 20 4 METHODS OF USE 41 COMPOSITION OF THE MEASURING SYSTEM 4 1 1 MINIMUM CONFIGURATION Senda Conduc ibilita Figure 11 Minimum configuration 4 1 2 MAXIMUM CONFIGURATION a Mew 2 b J roert Mort M3 T _ L0
19. PONSIBILITY BY THE MANUFACTURER The supplier will be held responsible for the safety reliability and performance of the equipment only if used in compliance with the following conditions 1 3 Calibration modifications or repairs must be carried out by qualified personnel specifically authorised by supplier Opening of the equipment and access to its internal parts may only be carried out by personnel qualified for maintenance and specifically authorised by supplier The environment in which the equipment is used must comply with safety regulations The electrical connections of the environment must be carried out according to regulations and must be perfectly efficient Replacements that can be carried out on parts of the equipment and accessories must be done so with others of the same kind and of the same characteristics The use and maintenance of the equipment and of relative accessories must be carried out in compliance with the instructions indicated in this manual This manual must always be kept integral and legible in all parts LIMITS OF USE AND PRECAUTIONS FOR SAFETY In order to guarantee safety of the operator together with the correct functioning of the equipment it is important to work within the limits permitted and to adopt all of the precautions listed below CAUTION Check before use to make sure that all safety requirements are fully satisfied The equipment must not be powered or connected to other equipmen
20. PROBE CONNECTION a 20 4 21 4 1 COMPOSITION OF THEMEASURING SYSTEM enrera 24 4 1 1 MINIMUM CONFIGURATION s eae A edat 21 4 1 2 MANIMOUM CON FIG GRA TL ON secs Ro REN E REPRE ae Cete dE 21 4 2 STAR DUPOLPTHBESXSTENLussmsm T D CEN Md 22 4 2 1 MENU FUNCTIONS START ud nda etaed en been on uud tutos tuo odd Ue 22 221 Contas 22 4 3 INTRODUCTION OF OPERATIVE PARAMETERS THE USE OF KEYS ern 22 4 3 1 SELUP MENU TEMPERATURE SYSTEM SETUP EAT EAE 23 4 3 2 SELUP MENG DIGITALINPUOUT SIAN GE aANT E E E 24 4 3 3 SEXUPMBNUNCONSTIANCE A O O ed E AE 26 4 3 4 OUTPUTS MENU RELA Y OUTPUTS SET PODNT T ESS 26 4 3 5 OUTPUTS MENU RELAY OUTPUTS SET POINT 2 ETC Jenere n EE EEE E 28 4 3 6 OUTPUTS MEN CUSED POINT TEMP A A 30 4 3 7 OUTPUTS MENUTQURRENI OUIP UT sciet T N 30 4 3 8 CALIBRATIONS MEN 0 cuti ment UE 31 4 5 COMGUCHVITY Cal Dralion P tuc adeat eet 32 0000137715 Rev 2 0 Hi 4 3 02 CaO O eaa 4 3 9 VIANA TG CON OTN 34 TOME ONC T
21. Times the TIME function will be activated Eg Time ON 5sec Time OFF 10sec fig 15 b When the threshold 15 activated the relay will alternate between an open closed position according to the times programmed In the case of the example the relay will close for 5 seconds ON time after which time it will remain open for 10sec OFF time This cycle will continue until Threshold 1 15 not deactivated Measure SET BN 3 SETI DFF du d noe RELE ON a Threshold RELE OFF gt T SIS HN 7 Z Threshold by programming negative times b RELE DFF gt gt IEEE T RELE DN Threshold by programming positive times RELE OFF gt p T Figure 15 Operation of Relay 1 0000137715 Rev 2 0 27 4 3 5 OUTPUTS MENU RELAY OUTPUTS SET POINT 2 ETC WE mA ENTER _ Set 2 0 OUTPUT QUTPUTS F1 UP DOWN F2 UPDOWN F3 UP DOWN 2 1 RELAY OUTPUTS 2 1 RELAY OUTPUTS Set Point 1 Set Point 1 Set Point 2 2 1 RELAY OUTPUTS Set Point 1 Set Point 2 Set Logico Alarm Set Temp 1 Alarm Set Temp 1 Wash Set Temp 2 Wash Set Temp 2 Set Point Temp Set Point Temp ENTER ENTER ENTER 2 12 SET POINT 2 2 13 LOGIC SET 0 0 mS
22. UCTIVITY PRIMARY 8 22252 TECHNICAL CHARACTERISTICS FOR MEASURING OF SECONDARY 8 2 2 3 OPERATING FEATURE So teet e aU 8 2 3 CONTROLS INDICATORS AND 10 2 4 CRAPHICDISPEA Y iubet t iIIa mer HM IM NS ee ae 11 2 4 1 HST OF PRIMARY MEIN et als hs tia acte Ramsau idus duda e ceat calet tee saudades Sette 11 2 4 2 DIVISION OF THE GRAPHICAL DISPLAY INTO AREAS IN THE RUN 12 9 INSEFEALLATION a eset eue ie edu nda ed edu Ese uut 15 3 1 CONIPOSIEION OE TEE SUPP EY deter reve tete i eoe ote t ote ete odo etes tae nere aes 15 3 1 1 INSTALLATION OF WALL MOUNTED DEVICE eascann a re ee obe ete e RUE RN 15 3 1 2 INSTALLATION OF THE GEAR CASE INTO THE ELECTRICAL PANEL eee 16 3 1 3 CONNECTIONS TO THE POWER SU PPE eremo asunto 17 3 1 3 1 Electrical Connections to the dosage systems USGES 17 3 1 3 1 1 Connection terminal box for wall mounting 3522 4 us ers ti o a 18 3 1 3 1 2 Connection terminal box for panel mounting 3522 19 the uf 20 3 1 4 CONDUCTIVITY
23. ed by the cell factor The conductivity value is given by 2 where C solution specific conductivity C conductivity reading on the instrument K cell constant in cm F cell factor in cm For measuring the low conductivity values it is recommended to use high factor cells and vice versa Another important distinction standard relates to the materials of the electrodes 1 e platinum plated Pt spongy surface stainless steel properly satin and oil free surface graphite The concentric or self shielded cells are then distinguished from the symmetrical electrodes The measure accuracy and stability might be highly reduced by the electrode polarization and contamination The polarization effect 15 due to the electrostatic charges that generates on the electrode surfaces even if the ion movement is due to an alternate electric field and is particularly detected under concentrate solutions on the contrary the contaminations are due to deposits encrustations oil grease etc The two phenomena can be partially reduced by using electrodes made of a material suitable to the solution and by using a proper frequency of the oscillator powering the cell 2 2 CHARACTHERISTICS Measuring of Conductivity Measuring of Temperature using the PT100 PT1000 probe Automatic Compensation of Temperature Programming key pad with 4 keys LCD Graphic display 128x64 with background il
24. eeder This equipment has been designed to analyse ON LINE and pilot the dosage pumps for the treatment of water in different applications e Waste water treatment plant e Treatment and Discharge of Industrial Water e Fish farm Primary Water Drinking Water Figure 1 Wall mounting and panel mounting Conductivity analyzer 2 1 MEASURING PRINCIPLES The electrical conductivity measure shows ion concentration into a solution More 15 the solution acid or even basic salt quantity higher 15 the conductivity The conductivity measuring unit is Siemens cm The measuring scale for water solutions starts with the ultra pure water whose conductivity is 0 05 uS cm 25 C Conductivity of the natural water e g of the drinking water or of the surface waters is of about 100 1000 uS cm Some bases as the potassium hydroxide with values being slightly higher than 1000 ms cm reach the scale upper value In particular the conductivity measuring 15 used in water analysis drinking water mineral water underground water distilled water demineralised water boiler feed water waste water for galvanic baths controls purity controls organics nutrients in the thermoelectric units steam condensate cycle control in the food industries in sugar factories cellars textile industry automatic irrigation plants etc The electrical conductivity of a solution 15 defined as the reciprocal of the opposite resistance by a cubic centi
25. equipment to the risk of dripping water sprays of water or immersion in water and the use in environments in which such risks may be present Equipment in which liquids may have accidentally penetrated must be immediately switched off cleaned and controlled by authorised and qualified personnel Once programming has been carried out we recommend that the transparent panel 1s closed Protection Wall mounting P66 EN60529 EMI RFI CEI EN55011 05 99 Use the equipment within the environmental limits of temperature humidity and pressure specified The instrument has been developed to operate in the following environmental conditions Temperature of the working environment 0 C 50 Temperature of storage and transportation 25 C 65 Relative humidity 10 95 RH not condensing CAUTION accordance with the functional requirements imposed by current legislation The apparatus must be inserted perfectly into the plant The plant must be kept operative in full compliance with the safety regulations provided The parameters indicated on the analyser must comply with current regulations Any signals of faults to the device must be positioned in an environment that is constantly controlled by operative personnel or plant assistants Non compliance with even just one of these conditions may lead the logics of the device to operate in a potentially dangerous manner for users of the service Therefore
26. hould indicate ON K3 Analogical Outputs It allows for manual simulation of both the Analogical Outputs under current The variations of the outputs have a pass of 0 1mA K4 Relay Outputs It allows for manual activation of the Relay Outputs CAUTION When exiting from the MANUAL CONTROL function all the possible manual settings will be reset 0000137715 Rev 2 0 34 4 3 10 FUNCTIONS IN RUN ESC UP relay Set Point L3 ENTER ENTER 1 0 mS om M SETA 99 d 1 2 Lm In the RUN screen the following things can be seen Dissolved Conductivity measure Percent value compared to full scale bargraph e the status and type of programming of Relays 1 and 2 Status of Digital Input Status of the Alarm Relay Status of the Washing Relay e Status of the Password Status of measuring and outlet freezing Value of the Temperature or of the Analogical Outlet System errors L1 Pressing the ESC key By pressing this key you will enter the Instrument Programming stage and all measuring and dosage functions will be deactivated Caution the instrument will not leave this stage automatically and therefore if 1t is left in the Instrument Set up it will never carry out any operation In the Instrument Set up stage serial communication 15 also deactivated L2 The UP key It visualises the status and the value of the Set Point 1 and 2 w
27. ibed GRAPHIC VISUAL REPRESENTATION DESCRIPTION ZONE IGE T4 Set1 Open Relay LLL En Seti Timed Active Threshold Relay Open Set1 Timed Deactivated Threshold Relay Open Seti Timed Active Threshold Relay Closet Set2 Open Relay Relay Set2 Timed Deactivated Threshold Relay Open Set2 Timed Active Threshold Relay Closed Set2 Closed Relay Set2 Timed Active Threshold Relay Open 4 DIS SETI SET Disabling Set Indicates digital entrance ON 0000137715 Rev 2 0 12 VISUAL REPRESENTATION DESCRIPTION GRAPHIC ZONE m Stay time ER 01 UU TR QUE XT UUT SET Probe frozen on a value Maximum Logical Set Exceeded Minimum Logical Set Exceeded Maximum dosage time exceeded j Washing stage active ALARM WASH a a E a Kaa mH 2 Value outlet n 2 of temperature in mA T Value outlet n 1 in mA Real temperature value in Fahrenheit Manual value of temperature in Fahrenheit Real temperature value in Centigrades Manual temperature value in Centigrades 0123456789 Numerical 0000137715 7 2 0 43 GRAPHIC VISUAL REPRESENTATION DESCRIPTION ZONE 0000137715 100 of the scale Conductivity measurement unit I Conductivity measurement unit Conductivity measurement unit Rev 2 0 14 INSTALLATIO
28. ithout blocking the operation of the instrument or stopping the pump L3 The ENTER key It visualises the value of Temperature of the value of the Analogical outlet 1 or the value of the Analogical outlet 2 at the bottom of the display L4 The DOWN key It is possible to ZOOM on the primary measure 0000137715 Rev 2 0 35 5 USERMAINTENANCE 5 1 SPECIAL CAUTIONS FOR CRITICAL COMPONENTS An LCD Liquid Crystal Display 1s incorporated into the equipment and it contains small amounts of toxic materials In order to avoid damages to people and to limit the negative effects on the environment comply with the following instructions Display LCD e The LCD display of the electronic device is fragile it 15 made of glass and therefore should be handled with extreme care For this reason we recommend that the device is protected in its original packaging during transport or when not in use e Ifthe glass of the LCD breaks and liquid spills out make sure that you do not touch it Wash every part of the body that may have come into contact with the liquid for at least 15 minutes If once this operation has been carried out you notice any symptoms consult a doctor immediately 0000137715 Rev 2 0 36
29. lue given the instrument to the correct measure J2 Reset Default As shown I2 step this step of the programme allows for the calibration factors to be reset to the original factory ones 0000137715 Rev 2 0 33 4 3 9 MANUAL CONTROL MENU MANUAL CONTROL UP DOWN UP DOWN K1 P DOWN K2 K3 K4 6 0 MANUAL CONTROL 6 0 MANUAL CONTROL 6 0 MANUAL CONTROL Analog Inputs Analog Inputs Analog Inputs Digital Inputs Digital Inputs Analog Outputs Analog Outputs Relay Outputs 6 1 MANUAL CONTROL 6 2 MANUAL CONTROL 6 30 ANALOG OUTPUTS 6 40 RELAY OUTPUTS Digital Inputs 2077 Digital Input OFF 0399 This step of the programme is useful for all functional controls eg Upon installation to check functioning of the entire system K1 Analogical InputS This function allows for the values read by the digital analogical converter related to the Conductivity and temperature measuring to be seen directly This allows you to understand if the level of analogical acquisition of the instrument works correctly K2 Digital Inputs The instrument is fitted with a passive digital input separated galvanically which allows for the doses to be deactivated on the Relay and also on the Analogical Outlets This step allows you to check whether or not the digital input of dosage deactivation works correctly If it is Open it must indicate OFF and 1 however tension 15 applied to the clamps according to specifications the instrument s
30. lumination nternal Data Logger flash 4 Mbit with the possibility of graphic and table visualisation of measurement trends PID adjustment 0000137715 Rev 2 0 7 e Serial outlet RS485 MOD BUS Data download on USB key optional Programmable Analogical Outlet 2 Relay Outlets for intervention thresholds Relay Outlet for Instrument Anomaly Alarm or Temperature Set Point Relay Outlet for Probe Washing or Temperature Set Point 1 Digital Entrance for disabling of doses gt Main hardware characteristics of the electronic device The hardware structure of this periphery 15 based on the adoption of extremely new CPU CMOS with 8 bits developed specifically for the execution of the so called embedded applications The card uses an EEPROM to store the Set up data and flash memories for storage of the archives of historical data and LOG files of events The Card has 1 RS485 gate opto 1solated for local networks used for connections with local communication devices configuration computer terminals and remote controls etc The card integrates a Real Time Clock clock with date that allows the software to storage figures in a chronological order The device has been designed to be fitted onto a panel and is built with an IP66 protection panel 2 2 1 TECHNICAL CHARACTERISTICS FOR CONDUCTIVITY PRIMARY MEASURE Measurement range 00 00 20 00 000 0 200 0 0 2000 u 00 00 20 00mS cell Resol
31. mable output 0 4 20mA 500 Ohm 2 4 mA with range 4 20mA P PI PID 0 500 0 00 5 00 min 0 00 5 00 min Rev 2 0 9 2 3 CONTROLS INDICATORS AND CONNECTIONS Figure 2 Wall instrument front panel Visualizer with LCD Display UP key ESC key ENTER key DOWN key dz Figure 3 Access to the terminal box 0000137715 Rev 2 0 10 2 4 GRAPHIC DISPLAY The graphic display allows for visualization of the various programming menus and in the measuring method RUN visualization of the measurements and of the state of operation 2 4 1 LIST OF PRIMARY MENUS The following table illustrates the symbols visualized on the display which represent the various programming menus VISUALIZATION DESCRIPTION ON THE GRAPHIC DISPLAY 1 ti SETTINGS MENU All basic parameters for operation logics are set SETUP OUTPUT MENU Setting of analogical and digital outputs CALIBRATIONS MENU Calibration Procedure of the electrode CHL IBRHT IONS MANUAL CONTROL MENU Manual control and activation of Inputs and Outputs MANUAL CONTROL 0000137715 Rev 2 0 11 2 4 2 DIVISION OF THE GRAPHICAL DISPLAY INTO AREAS IN THE RUN METHOD Figure 4 Graphic display divided up into areas In the following table for every area of the display indicated in figure 4 the symbols that may appear during functioning of the device in a measurement method RUN are represented and briefly descr
32. metre of such a solution at a certain temperature 1 e of the resistance being measured between two 1 cm surface electrodes 1 cm away immersed in the above solution Taking the 20 temperature as a reference the conductivity changes as per the following formula C C59 1 100 20 0000137715 Rev 2 0 6 where C conductivity to the temperature T C20 conductivity at 20 C T solution temperature 91 T coefficient at 20 in C The value is between 1 3 and 3 1 for almost all of the electrodes and 15 usually 2 1n the diluted solutions Aiming at comparing the various solutions conductivity values it is necessary to bring all the measure back to the 20 C reference temperature using the above said formula take note that 1f the conductivity meter does not include the temperature equalizer the measure refers to the solution conductivity at the effective temperature if the conductivity meter includes the equalizer the conductivity shown refers to that of the solution when brought to the selected reference temperature nevertheless the solution temperature at the measuring time The conductivity measure can be taken using both the electronic instrument and a measuring cell The cell includes two ore more electrodes The base electrical feature of the conducimetric cells 15 the cell factor K depending exclusively on the geometric dimensions of the cell and expressed in cm cm of section divid
33. nction it is possibile to set the direction of the input if active when the input goes HIGH Or LOW setting HIGH the digital input 1s active when the input itself 1s powered Setting LOW the digital input is active when the input itself 15 not powered C1 Range Allows to set the range in wich the probe works acording to the assigned constance cell If the constance cell 15 1 range 15 selectable between e 0 200 mS 0 20 mS e 0 2000 uS 0 200 uS 0 20 uS If the constance cell 1s 0 1 range 15 selectable between 0 28 e 0 200 mS 0 20 mS e 0 2000 uS e 0 200 uS If the constance cell is 10 range is selectable between 0 20 mS e 0 2000 uS 0 200 uS 0 20 uS 0 2 nS 0000137715 Rev 2 0 25 4 3 3 SETUP MENU CONSTANCE CELL ENTER DOWN 1 0 SETUP UP 1 5 SETUP Processing Pressure D1 Constance cell Allows to set the value of the della Constance cell choosing between 0 1 1 and 10 4 3 8 OUTPUTS MENU RELAY OUTPUTS SET POINT 1 2 0 OUTPUTS 2 1 RELAY OUTPUTS OUTPUTS 2 11 SET POINT 1 0 0 mS 0 0 mS 000 Sec 000 Sec The programming parameters of Set Point 1 establish the working logic of Relay 1 Itis possible to programme using the logics of Relay 1 in the following ways E1 Threshold By programming the Set Point for this function we can activate the relay as a Threshold by programming an ON value relay activation and an OFF value relay deactivation The free pr
34. ogramming of these two values will allow for the creation of a hysteresis suitable for any kind of application By programming the ON value higher than the OFF one fig 14 a an UPWARD threshold will be achieved When the value exceeds the ON value the relay is activated and remains active until the value falls below the OFF value By programming the OFF value higher than the ON one fig 14 b a DOWNWARD threshold will be achieved When the value falls below the ON value the relay is activated and remains active until the value exceeds the OFF value See fig 16 0000137715 Rev 2 0 26 Measure HC E 4 p 1 LL b Tiu ep esr OO Figure 14 Threshold operation Furthermore by acting on the Time ON and Time OFF parameters it 15 possible to define a DELAY time or a operation of the Relay during its activation Negative of positive ON and OFF Times can be defined fig 15 By programming Negative Times the DELAY function 15 activated Eg Time ON 5sec Time OFF 10sec fig 15 a When the threshold 15 activated the relay will close after 5 seconds ON time and it will remain closet for the entire period in which the threshold is active When the threshold is deactivated relay will remain closed for another 10 seconds OFF time after which time it will open By programming Positive
35. ry including recycling of the majority of the materials and to reduce the amount of waste or residues to be disposed of to a very minimum In order to assure a correct environmental impact the equipment has been designed with the smallest circuit possible with the lowest differentiation possible of materials and components with a selection of substances that guarantee utmost recycling and maximum reuse of the parts and waste disposal free from ecological risks The equipment is made in such a way as to guarantee the easy separation or dismantling of the materials containing contaminants compared with others in particular during maintenance operations and the replacement of parts CAUTION at the end of its life cycle must be carried out in accordance with the norms and regulations that are currently valid in the country in which the equipment is used The disposal recycling of packaging of consumption materials and of the equipment itself SPECIAL ATTENTION TO CRITICAL COMPONENTS The instrument 15 fitted with an LCD liquid crystal display which contains small amounts of toxic materials 0000137715 Rev 2 0 5 2 GENERAL DESCRIPTION The analyser of this manual is made up of an electronic device plus a technical manual The device may be installed on an electrical board or to the wall at a maximum distance of 15 metres from the measuring Probe It is powered by the network 85 265 Vac dc 50 60Hz 24Vac dc optional by a Switching f
36. sh Set Temp 2 OUTPUTS 2 16 SET POINT TEMP G1 Set Point Temp If at least one of the two relays in points F3 F4 is set as temperature relay within this step it is possibile to set up the Set Point OUTPUTS MENU CURRENT OUTPUT 2 0 USCITA 2 2 CURRENT OUTPUT Relay Outputs OUTPUTS 2 21 MEASURE Low Limit High Limit Namur Output The instrument is fitted with two analogical outlets in a current that is separated galvanically and are independent of each other The first outlet refers to the primary measuring therefore proportional to the Conductivity measured The second however can be programmed between Temperature or CONDUCTIVITY 0000137715 Rev 2 0 30 H1 Measuring In this step of the programme 4 functions can be set OUTPUT RANGE A selection can be made between 0 20mA or 4 20mA The default is programmed at 0 20mA LOWER LIMIT A Conductivity value at 0 to 4mA of output current can be set The default is set at OmS UPPER LIMIT A Conductivity value of 20mA can be set for output current The default is set at 20 0mS The regulation of Lower and Upper Limit functions allow for the scale of analogical outputs to be amplified Furthermore the output can be inverted to 20 0mA o 20 4mA NAMUR OUTPUT This function is only activated if chosen as an Outlet Range of 4 20mA If this function is activated in the case of an alarm the outward value of the current will be 2 4m
37. st one On this step solutions with known title and different concentrations can be used and inserted by pressing the UP and DOWN keys The calibration solution can be selected referring to the working range where the probe will work in Example If the working range is between 500 and 1000uS use a solution at approx 750 800uS as second point Once finished the second point calibration the instrument will check the calibration data compliance If correct the instrument will display Calibration OK if not Faulty probe If Faulty Probe 15 displayed we recommend check the physical probe integrity To check the cable integrity the correct connection to the instrument and on the probe 12 Default Reset This step of the programme allows for the calibration factors to be reset to the original factory ones To be used when incorrect calibrations are confirmed 4 3 8 2 Temperature calibration 3 0 CALIBRATIONS Conductivity 3 3 TEMP CALIBRATION 3 3 TEMP CALIBRATION Automatic Default Reset TEMP CALIBRATION 3 3 TEMP CALIBRATION Default Reset The calibration of Temperature allows to align the values given by the temperature sensor to the real analisys values this step must be done only if the operator finds a few differences between the values given by the instrument and the real temperature J1 Automatic Calibration The calibration consists in adding or subtracting an offset in order to bring back the va
38. t until safety conditions are satisfied 1 3 1 ELECTRICAL SAFETY of the connections are isolated from environment ground mass is isolated DO NOT connect any of these connections to earth In order to guarantee conditions of utmost safety for the operator we recommend that all of the indications listed in this manual are respected 0000137715 Power the equipment exclusively using network tension according to specifications 85 265 Vac dc 50 60 Hz 24Vac dc optional Replace damaged parts immediately Cables connectors accessories or other parts of the equipment that may be damaged or not working correctly must be replaced immediately In this case contact your nearest authorised technical assistance centre Only use accessories and peripheries specified by supplier In order to guarantee all of the safety requirements it is important to make exclusive use of the accessories specified in this manual which have been tested in combination with the equipment The use of accessories and consumption materials of other manufacturers or not specifically recommended by supplier will not guarantee the safety and correct operation of the equipment Only use peripherals that comply with the regulations of their specific categories Rev 2 0 2 1 3 2 SAFETY OF THE OPERATIVE ENVIRONMENT 0000137715 The panel of the device is protected against the introduction of liquids Avoid subject the
39. the anomaly of the absence of power tension which will lead to the immediate opening of the relay TIME OUT With this function it 1s possible to set a maximum activation time of Set Point 1 and 2 after which time the alarm will be activated This allows for the state of the dosage pumps to be kept under control By default this function 1s deactivated time 00 00 00 The maximum time that can be programmed is 60 minutes at steps of 15 seconds PERMANENCE FIELD PERMANENCE TIME This function allows for the state of functioning of the measuring probe to be kept under control If the measurement is stabilised within a certain interval for a period of time that exceeds the time set the instrument will generate an alarm In order to activate this function the following must be set in the PERMANENCE FIELD step the minimum oscillation interval of measuring delta CONDUCTIVITY in the PERMANENCE TIME the maximum time in which excursion must come about If during the period of time programmed measuring is always within the interval programmed the instrument will set off an alarm By default this function 1s deactivated as a delta 0 and a time of 00 00 00 has been programmed The maximum time that can be programmed is 99 hours at steps of 15 minutes F4 Wash Set Temp 2 The instrument 1s fitted with a Washing Relay that can control a solenoid valve for washing of the measuring electrode The washing stage lasts 1 minute
40. ution 0 01 0 1 4 uS 0 01 mS Precision t 1 F S Max load 500 Ohm NAMUR alarm output 2 4 mA with range 4 20mA 2 2 2 TECHNICAL CHARACTERISTICS FOR MEASURING OF SECONDARY TEMPERATURE Sensor PT100 100 Measurement range 0 50 Resolution 0 1 Precision EIFS 2 2 3 OPERATING FEATURES Power supply 85 265 Vac de 50 60 Hz 24 Vac dc optional Power consumption TW 0000137715 Rev 2 0 8 0000137715 Relay outputs Set Point ON OFF ON OFF Time Alarm Function Delay time Threshold disabling Relay function Holding range Holding time Digital input Input voltage Absorption Analogic output Output Max load NAMUR alarm output PID dosing function Proportional band Integration Derivative 00 00 20 00 000 0 200 0 0 2000 uS 00 00 20 00 15 000 999 Seconds For every digital output a relay with contacts opened normally is used The maximum current commutable 15 Ampere the maximum tension commutable 15 230Vac maximum power 230VA on resistive load Delay Faults and Min Max 00 00 99 99 min Enable Disable Closed Open 00 00 20 00 000 0 200 0 0 2000A uS 00 00 20 00AmS 00 00 99 99 min For alarm end wash digital output relay with contacts opened normally is used The maximum current commutable 15 Ampere the maximum tension commutable 15 230Vac maximum power 230VA on a resistive load 24 Vcc ac 10mA max program
41. we recommend that service personnel and or maintenance personnel operate with the utmost care pointing out any changes to the safety parameters immediately in order to avoid the creation of any potentially dangerous situations As the considerations indicated above cannot be controlled by the product in question the manufacturer will not be held responsible for any damages that these malfunctions may cause to people or things Rev 2 0 3 1 4 GRAPHIC SYMBOLS The following table illustrates the drawings the relative description and the position of all graphic symbols present on the equipment panels and on any other equipment or external devices to which they may be connected SYMBOL DESCRIPTION POSITION Z Symbols located close to the connections of the equipment to the electricity network Danger symbol A symbol located close to the clamps for connection to power Earth protection Caution Refer to the A symbol located close to the points in which the documentation attached user manual should be consulted for important information see paragraph CAUTION POSITIVE pole of the connector RS485 A NEGATIVE pole of the connector RS485 B CONDUCTIVITY Conductivity sensor connection ale PTIOG T1 COD PT1 000 Temperature sensor connection dnm NN output n 1 0 4 20mA separated galvanically Symbol of separate collection Symbol placed on the top of the electronic box of electrical and electronic equipment
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