PH 7635 MICROPROCESSOR BASED pH METER
Contents
1. MICROPROCESSOR BASED pH METER ORP METER pH scale 0 14 00 pH ORP scale 1000 1000 mV Temperature scales 0 0 100 0 C 32 0 212 0 F Option S N REP N Power Supply 85 264 Vac Installed Firmware R 1 0x Cod 28001765 Revision A 1957 NIEUWKOOP BV WWW METEN NL INSTRUCTION MANUAL PH 7635 BC3531 D Rev Ole B amp C Nieuwkoop BV PH 7635 Index PRODUCE PRESEN VATION ii dea enen 3 1 1 Functional p urpose or eMule a allan eda edant 3 1 2 Functional princtples c uec eed ie tr e RO Pee AMI la 3 1 3 a A a n ea teu 3 2 GENERAL WARNINGS AND INFORMATION FOR ALL USERS eneen 6 2 1 Warranty een r E a A NS T A EAT NEO ERES aO a ENSS 6 2 2 Aftersales Servic Erene p 6 2 3 A bua saks Sa 6 2 4 Safety Warnings IR STET r k 6 3 INSTRUCTION MANUAL CONTENTS tina pin its 7 3 1 Ei TS IO smk Si Na tare tee he Se r AR a Fi 32 eV TOG O 7 3 3 How to read the instruction malla ir n 8 3 3 1 Using the instrument on the plant ii de 8 3 3 2 Plantimaintenance A A A ia m dot Ge t 9 3 3 3 Installing the instrument in the plant sust ede 9 4 SPBCIEICATIONS s sss A a aar 10 4 1 butciondl special iia a a 10 4 2 TECNICAS PEA AOS en o tm eed 12 3 OPERATING PROCEDURES siii 16 5 1 Keyboard HE EET HEREIN 16 5 2 Operating BITS ETUC CLOTS A ON 17 5 2 1 Main MASA A E ER 17 522 TettipeFat tre THOGSUEPEB rn 17 5 2 3 Setup parameters sron iaa 18 5 2 4 Configuration parameters acto loss oia 18 5 2 5 Pipinw dre Tele2. Increase the values Starts sensitivity calibration a Changes the options Sens Up 7 Decrease the values SET1 P Starts set point 1 calibration Changes the options Set1 Down Enter the new values Starts the visualized function Ed z Starts set point 2 calibration Set2 Enter Instruction manual Rev A 05 07 16 B amp C Nieuwkoop BV PH 7635 5 2 OPERATING INSTRUCTIONS 5 2 1 Main measuring The display shows the main measure values as selected in the configuration menu DH measuring The front panel LED is lit according to the selected measure pH LINO pH ALM O O mV The front panel LED is lit according to the selected measure mV Display 1 0 LINO O pH If the measuring value is under range over range the following messages will appear Display 1 0 ORP measuring DE uoc MS From this display 1 0 it is possible to start the sensors calibration procedure the set points setting if those functions have been enabled in the set up menu by pressing the key the LED 4 or 5 on the front panel are switched off and the analog output range and the expected current on the load are displayed ouk 0 20 MA 000 or ouk 4 20 NA 000 5 2 2 Temperature measuring By pressing the key from the 1 0 display the unit will show the message PL o FF if the RTD is not connected the message MAn and the temperature value actual value or t
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4. 4 1 FUNCTIONAL SPECIFICATION Display The instrument has a 7 segments and 4 digits LED display The display shows the measures vales and the messages to the operator In particular the messages scroll on the display and they are preceded by the corresponding number of the Technical Specifications tables Chapter 4 2 After a 3 stand by the display goes back to showing the main measure Keyboard The instrument has 8 keys which allow to access all of available functions The upper keys are for zero and sensitivity calibration of pH and ORP electrodes and to confirm the set points value All of this functions can be then protected by means of password The other keys will be described in the following chapters Input The controller can measure the main parameter and the temperature The measured parameter is indicated by the Led positioned to the right of the display The pH can be measure by means of glass or antinomy electrodes while the ORP can me measure in three ranges positive negative full range negative positive The temperature value in C or F can be measured with a Pt100 or Pt1000 temperature sensor which according to the distance between sensor and controller can have 2 or 3 wires Temperature compensation The instrument shows the temperature value When measuring the pH the controller is capable of manually or automatically compensate the temperature In case the temperature sensor is absent or it i
5. Type of measure pH O r P pH C1 1 pH sensor pH buLb Ant buLb C1 2 ORP range ORP FULL nEG POS FULL C1 2 Temperature sensor Pt100 Pt1000 Pt100 C2 1 Set point 1 function Lo Hi Lo C3 1 Set point 2 function Lo Hi e Hi C3 2 Alarm relay status Act dEA E Act C4 1 Analog output range 0 20 4 20 mA 0 20 mA Pod Logic Input function HoLd ALAr HoLd i C61 Modify password to CONFIGURATION access 0 LCI GENERAL SPECIFICATIONS Display Led indicators Operating temperature Humidity Power supply Isolation Power consumption Terminal blocks Weight Dimensions Dimensions internal to switch board LED 7 segments and 4 digits setl and set2 relay status alarm status logic input contact status measuring unit pH measuring unit mV 0 50 C 95 without condensation 85 264 Vac 50 60 Hz 4000 Vde 2350 Vac between primary and secondary IEC 348 6 VA max extractable 450 g 96 x 96 x 104 mm including frame 90 x 90 x 95 mm Instruction manual Rev A 05 07 15 B amp C Nieuwkoop BV PH 7635 5 OPERATING PROCEDURES 1 Values and messages display 4 Selected measure pH 3 Selected measure ORP 2 Logic input contact visualization 6 Set point relay activated 3 Active alarm visualization 7 Keyboard Fig 1 5 1 KEYBOARD Visualizes instrument functions Exit without changing the values zel Starts zero calibration Zero SENS Ke
6. 20 mA and it is displayed by the main measure The galvanic isolated output allows the controller to communicate with a PLC or with a recorder and it does not need an external power supply Logic input The instrument is equipped with a logic input to connect to external dry contacts The logic input function can be activated or deactivated from the set up menu The input function can be selected Hold Alarm which features are described in table 6 0 of Chapter 4 2 Technical specifications and it is selected in the configuration menu Universal power supply The instrument can operate with an 85 264 Vac power supply Power supply option 9 36 Vdc or 24 Vac By installing this option the instrument can be used with a 9 36 Vdc or 24 Vac power supply Instrument set up The instrument has the set up menu protected by a specific password In the menu it is possible to deactivate the functions of sensors calibration set points values and parameters changing alarm and logic input parameters changing Instrument configuration The instrument has a configuration menu protected by a specific password In the menu it is possible to select the pH ORP and temperature sensors to select the min max Lo Hi set point functions the alarm relay activation type Act Dea the analog output range and the logic input function Instruction manual Rev A 05 07 11 B amp C Nieuwkoop BV PH 7635 4 2 TECHNICAL SPECIFICATIONS The
7. ALARIN followed by the actual value pH or mV is shown by the corresponding LED 4 or 5 on the front panel Display 4 2 Maximum alarm value The following message will appear H i H RLHETI followed by the actual value pH or mV is shown by the corresponding LED 4 or 5 on the front panel Display 4 3 Delay in seconds of the alarm relay The following message will appear 4 3 ALARIN dELAS followed by the actual value Display S6 1 Logic input The following message will appear B l Louie InPUE followed by the actual setting Un UFF Instruction manual Rev A 05 07 24 B amp C Nieuwkoop BV PH 7635 Display S10 1 Password for the set up menu The following message will appear 10 1 5EE UP PASS followed by 5 3 9 Maintenance of the unit Quality components are used to give the controller a high reliability The frequency of such maintenance depends on the nature of each particular application As in any electronic equipment the mechanical components such as switches relays and connectors are the most subject to damage 5 3 10 Maintenance of the sensor The state of the electrode s surface is critical for the normal operation of the system and should be inspected more frequently when using alkaline liquids oil and grease containing water and bio applications Suggested methods for cleaning the electrode include chemical cleaning except hydrofluoric acid and washing detergents remove the se
8. display number is next to the factory values in the following tables SETUP parameters are indicated by S x y CONFIGURATION parameters are indicated by C x y x table section yzsequence 1 2 3 4 etc Underlined words in the tables correspond to scrolling display messages TU MAIN MEASURE r rFaxoy value YPE OF MEASURE PH O r P PH Chl YPE OF SENSOR pH measure Glass pH bulb Antimony pH buLb Ant buLb 13 Electrode Glass pH bulb Slope 59 16 mV pH 25 C mV a 7 00 pH 0 0 Zero 2 pH 0 00 pH Sens 80 110 100 nu Ne Electrode Antimony pH Slope 50 mV pH 25 C mV a7 00 pH 325 Zero 2 pH 0 00 pH Sens 70 140 100 nu Ne ORP measure Electrode ORP Zero 100 mV 0 mV Sens 80 110 100 EN NR NPUT SCALE pH scale 0 00 14 00 pH Resolution 0 01 pH Under range 1 00 pH Over range 15 00 pH ORP scale FULL nEG POS FULL C12 ORP scale 1000 1000 mV 0 1000 mV 0 1000 mV Resolution 1 mV 1 mV 1 mV Under range 1100 mV 1100 mV 100mV Over range 1100 mV 100mV 1100mV Instruction manual Rev A 05 07 12 B amp C Nieuwkoop BV PH 7635 YPE OF MEASURE Temperature Input Connection Measure unit Measure and compensation range Resolution Under range Over range Zero RTD Pt100 P
9. 36 LECCE Sos Edad Gu dt ee 37 Instruction manual Rev A 05 07 2 B amp C Nieuwkoop BV PH 7635 1 PRODUCT PRESENTATION 1 1 FUNCTIONAL PURPOSE OF THE UNIT The basic system for monitoring pH and ORP is made of two important parts the controller described in this instruction manual aprobe or sensor The instrument has the necessary electric circuits and firmware to perform the following functions 1 as the proper sensor is connected it displays the aqueous solutions pH and ORP values 2 if a Pt100 or Pt1000 temperature sensor is connected it will display the temperature values 3 it performs an automatic or manual temperature compensation for pH measures 4 if dosing pumps or solenoids are connected to the specific relays it will automatically adjust the pH and ORP values 5 if the measure goes outside the low high limit values it will give an alarm 6 it provides an analog output for recording and acquiring the pH and ORP values 7 to receive an external free voltage contact that activates the alarm or the hold condition 1 2 FUNCTIONAL PRINCIPLES When measuring pH the instrument receives a mV signal from the sensor and it displays the value in pH units this is done according to Nernst s law and the sensor used When measuring ORP the instrument receives a mV signal from the sensor and it displays the value in mV In both cases it is possible to make the necessary adjustments Zero and Sens
10. A4 1 4 Fig 3 Instruction manual Rev A 05 07 34 B amp C Nieuwkoop BV PH 7635 WARRANTY CERTIFICATE 1 Your product is covered by B amp C Nieuwkoop Warranty for 5 years from the date of shipment In order for this Warranty to be valid the Manufacturer must determine that the instrument failed due to defective materials or workmanship 2 The Warranty is void if the product has been subject to misuse and abuse or if the damage is caused by a faulty installation or maintenance 3 The Warranty includes the repair of the instrument at no charge All repairs will be completed at the Manufacturer s facilities in Aalsmeer Netherlands 4 B amp C Nieuwkoop assumes no liability for consequential damages of any kind and the buyer by accepting this equipment will assume all liability for the consequences of its use by the Customer his employees or others REPAIRS 1 x In order to efficiently solve your problem we suggest You to ship the instrument along with the Technical Support s Data Sheet following page and a Repair Order 2 The estimate 1f requested by the Customer is free of charge when it is followed by the Customer confirmation for repair As opposite 1f the Customer shall not decide to have the instrument repaired he will be charged to cover labor and other expenses needed 3 x All instruments that need to be repaired must be shipped pre paid to B amp C Nieuwkoop All
11. ASC ooi udi aid bua eo ste aaa a ki 18 5 3 Instruction Tor the maintenance stall nt isa 19 5 3 1 Pee naars operdiols Ask S b l lar ra a 19 52 2 IVICASUTITIS operations ri cotas 19 5 3 3 PECADO A 19 5 3 4 ORP calibration dle dii 21 5 3 5 Del pomtcaliBEILOI ida 22 5 3 6 Temperature cal ia is 22 5 3 7 Manual temperature compensatlOon aaaaaaaaaaaaaasssaasvaaasaaassaasaaaaaaaaananaanansannsanannsnananaaaaaa 23 5 3 8 EAS Ad 23 5 3 9 M intenance OF he MM iio edades 25 5 3 10 Maintenance ol THE sensor os dv sa ven adaa oh ow a Ve lar r a 25 5 4 Instruction for the plant encina idas 25 5 4 1 Safets INSTROMEN 25 5 4 2 Configuration Sese rye eee eds vidue oet mapu Rua dab enh 26 Instruction manual Rev A 05 07 l B amp C Nieuwkoop BV PH 7635 6 INSTALLATION O one ee eer es 28 6 1 Packing So uoces cess an dutem a n A rae 28 6 2 MSFT AG A 28 6 3 Storage and tr nsportati0 nusu rar 28 6 4 Installation OF the unit uo ees esate Rn as eee ene 28 6 5 Installation Of the Oe o oss hc aac ce EN ta 28 6 6 Electrical installation to cdi 29 6 6 1 Connecting Te POWER a a A asie ie 29 6 6 2 Connecting the electrodes or PODES ida 29 6 6 3 Connecting the ep UFO zu materneel 30 6 6 4 Connecting the analog OPIO interests 30 6 6 5 Connecting the pumps solenoids and alarms 31 6 6 6 Connecting the loci e ad 32 rae rip E Gees 32 NM ATEA YSCO ICAL A 36 REPASA erde dean EON ERU NU boer ge Saget k aoa rer ang ii
12. agnetic compatibility The C marking is placed on the packaging and on the S N label of the instrument 24 SAFETY WARNINGS It is important to underline the fact that electronic instruments are subject to accidents For this it is important to take all necessary precautions to avoid damages caused by malfunctions All types of operations must be performed by authorized and trained staff The use of this controller must respect the parameters described in Chapter 4 2 Technical specification so to avoid potential damages and a reduction of its operating life Instruction manual Rev A 05 07 6 B amp C Nieuwkoop BV PH 7635 3 INSTRUCTION MANUAL CONTENTS This chapter describes the manual and gives suggestions to all users on how to read it and use it The manual is written according to the following norms UNI 10893 Instructions for use UNI 10653 Quality of product technical documentation 3 1 MANUAL REVISION This chapter shortly describes the differences between previously released versions of the same manual so to help users that are already familiar with the product Rev A First release 3 2 SYMBOLS Throughout the manual You may find the following symbols which are both dictated by a Norm or that are simply conventional Symbol Meaning A Attention pay great attention to what written next to this symbol This symbol is used to warn users that if the ins
13. ation to compensate the wires resistance effect Three wires connection of Pt100 for long distance Use a suitable three wires cable Connect the RTD lead to 27 terminal Connect the RTD common lead to 28 and 29 terminal by using two separate wires Do not interrupt the cable Use high isolation terminals in case of cable extension Keep the cable away from the power cables In case of interference use a shielded cable and connect the shield to the 3 terminal 6 6 4 Connecting the analog output The instrument provides an isolated output current proportional to the main measuring pH ORP to send to an external recorder PLC or similar devices Connect terminal of the recorder to the 15 terminal of the unit Connect terminal of the recorder to the 16 terminal of the unit If the output current will drive more loads connect the devices in series The total resistance must be lower than 600 Q Instruction manual Rev A 05 07 30 B amp C Nieuwkoop BV PH 7635 Do not supply any voltage to the analog output terminals to avoid damages on the output circuits Connect only to passive input devices 6 6 5 Connecting the pumps solenoids and alarms The contacts of the control and alarm relays are available on the rear terminal strip of the instrument The contacts are SPST type corresponding to set point 1 and set point 2 and SPDT type corresponding to the alarm function SET POINT 1 terminal 5 marke
14. d C common contact terminal 4 marked NO normal open contact SET POINT 2 terminal 7 marked C common contact terminal 6 marked NO normal open contact Power the load through an independent power supply in order to avoid interferences from inductive load Install snubbers if necessary Install fuses as protection of the relays contacts in case of short circuit of the load Do not exceed the nominal current rate of the contacts 5 A resistive load At this step of the connection remember that each relay can be configured as min max function The set point values can be adjusted only if the calibration has not been disabled the delay can be adjusted in the set up menu see chapters 5 3 5 5 3 8 To modify the function min max Lo Hi of the set points see the charter 5 4 2 ALARM terminal 9 marked C common contact terminal 8 marked NO normal open contact terminal 10 marked NC normal closed contact The alarm relay can be configured as activated deactivated Act Dea during the alarm conditions of the measuring The alarm condition occurs when the measuring is lower higher than min max selected values see chapter 5 3 8 the delay of the relay action can be selected see chapter 5 4 2 If the configuration Deactivated GEA is selected the relay will provide the alarm contact even when the unit is switched off or the it is not in operation Instruction manual Rev A 05 07 31 B amp C Nieuwkoo
15. er S followed by a number The operations that need to be done during the start up and the periodical tests are the following to allow only the visualization of the measures during the normal use to calibrate the sensors by means of ZERO and SENS keys to set the following parameters set point 1 and 2 by means of SET 1 and SET 2 keys temperature value in C or F manual temperature compensation value Set point 1 and 2 delay min and max alarm value alarm delay activate deactivate logic input to modify password to access set up 3 3 3 Installing the instrument in the plant The plant engineer by inserting the access password and by setting and modifying the configuration parameters will be able to select the necessary functions required by the plant The location of this set parameters can be seen in the right column of the Technical Specifications table Chapter 4 2 and they are identified by a letter C followed by a number The operations that need to be done during the instrument installation are the following pH ORP electrode type ORP scale Pt100 or Pt1000 sensor min and max function of set point 1 and 2 activated deactivated condition of alarm relay 0 20 mA or 4 20 mA output range hold alarm function for logic input password to access configuration Instruction manual Rev A 05 07 9 B amp C Nieuwkoop BV PH 7635 4 SPECIFICATIONS
16. he manual value selected in the display S2 2 L IN O O pH ALMO O mV From this display it is possible the access to the calibration procedure of the temperature probe if this function is enabled by the operator Display 2 0 Instruction manual Rev A 05 07 17 B amp C Nieuwkoop BV PH 7635 5 2 3 Set up parameters The set up parameter changing can be enabled disabled by the operator MODE ESC By pressing two times the key from the 1 0 display the unit will show the message 5EE UP Pre55 Enk and it is possible to access to the menu reserved to maintenance staff set up LIN O O pH ALMO O mV 5 2 4 Configuration parameters Display 10 0 MODE ESC By pressing three times the key from the 1 0 display the unit will show the message LanF ij PrE55 Ent and it is possible to access to the menu reserved to the plant engineer configuration Display 11 0 LINO O pH 5 2 5 Firmware release MODE ESC By pressing four times the key from the 1 0 display the unit will show the message PHiB35 r 100 it shows the unit p n and the release of the firmware installed in the unit Display 12 0 LINO O pH ALM O o MODE ESC By pressing the key the unit turn back to the main display Instruction manual Rev A 05 07 18 B amp C Nieuwkoop BV PH 7635 5 3 INSTRUCTION FOR THE MAINTENANCE STAFF 5 3 1 Preliminary operations All the functioning operations must be done with sensor or s
17. he chapters regarding users instructions calibration maintenance warranty repair terms and conditions The plant engineer will have to read the chapters and look at the application drawings in order to verify that the technical and functional characteristics are conformed with the plants requirements verify that the environmental and climatic conditions required by the instruments are respected make the correct electronic connections become familiar with the instrument s firmware configure the instrument according to the application run all of the necessary tests before starting the instrument calibrate the instrument once the sensor is connected 3 3 Using the instrument on the plant For the generic use the end user can operate with a locked keyboard suggested mode and to be set by maintenance staff By this he can control the data provided without the possibility of changing the configured set points Instruction manual Rev A 05 07 8 B amp C Nieuwkoop BV PH 7635 3 3 2 Plant maintenance staff Maintenance staff can select the operating values by setting the desired parameters of the set up menu and after inserting the password The user s access to calibration set point and alarm settings can also be enable The location of this set parameters can be seen in the right column of the Technical Specifications table Chapter 4 2 and they are identified by a lett
18. imulator connected to the unit If the simulator is not available it is possible to install a jumper on the input terminals of the pH ORP electrodes in order to simulate pH 7 or mV 0 values Verify if the configuration the set point and the alarm parameter are suitable for the current application Follow the procedures described in the chapter 5 3 8 to verify the parameters without modifying the values The display LED and keys in the front panel allow the operator to perform the preliminary check A lit display indicates that the unit s powered and the power circuits work correctly 5 3 2 Measuring operations In order to correctly operate the system remember to verify the following sensors are installed and in contact with the liquid analog output if necessary eventual actuation of the relays and 2 alarm relay if necessary logic input if necessary power supply and ground Power the unit and read the pH ORP value of the liquid and the status of the set points If sensors and probes are connected correctly as described in chapter 6 Installation the system will operate properly and it will only need the calibration and the set point alarm values setting 5 3 3 pH calibration Before performing the calibration through the buffer solutions verify that the glass membrane of the sensor has been kept wet while in storage If the protective reservoir is empty and the electrode is dry dip the electrode i
19. in flow measures Pt100 probe for submersible measures Pt100 probe for flow cells watertight enclosure for 1 controller IP65 watertight enclosure for 2 controllers IP65 Junction box IP65 stopper coax cable D 2 5 mm L 100 m coax cable for SZ 1140 and SZ 2060 coax cable for SZ 1150 buffer solution pH 4 250 cc buffer solution pH 7 250 cc buffer solution pH 9 250 cc ORP standard solution 220 mV 250 cc ORP standard solution 468 mV 6x30 cc Instruction manual Rev A 05 07 5 B amp C Nieuwkoop BV PH 7635 2 GENERAL WARNINGS AND INFORMATION FOR ALL USERS 2 1 WARRANTY This product is guaranteed for all manufacturing defects Please take a look at the terms and conditions described on the Warranty Certificate at the end of the manual 2 2 AFTER SALES SERVICE B amp C Nieuwkoop offers to all of its Customers the following services a free of charge Technical Assistance over the phone for problems regarding installation calibration and regular maintenance a Repairing Service in our Aalsmeer NL headquarter for all types of damages calibration or for a scheduled maintenance Please take a look at the Technical Support data sheet at the end of the manual for more details 2 3 CE MARKING This instrument is manufactured according to the following European Community directives 72 23 EEC Electrical safety low tension amended in 93 68 EEC 2004 108 CEE previously 89 336 EEC Electrom
20. itivity to compensate the sensor response variations due to working conditions Temperature influences the solution s ionic activity and the signal provided by the sensor For this in applications where the liquid temperature is different from a reference value of 20 C it is important to use the temperature compensation function In applications where there is a great variation of the temperature value it is recommended to consider using a RTD and to use the automatic temperature function 1 3 SENSORS AND ACCESSORIES The listed articles are the most commonly used ones They must be ordered separately Sensors and accessories for heavier and particular applications are also available Our staff is always available to help Customers selecting the most appropriate and suitable solution for their specific needs Instruction manual Rev A 05 07 3 B amp C Nieuwkoop BV PH 7635 Immersion probes with electrode SI 161 SI 181 SI 262 SI 263 Electrodes SZ 145 SZ 165 SZ 173 SZ 195 1 SZ 1075 SZ 245 SZ 255 SZ 265 SZ 275 SZ 2055 SZ 1140 SZ 1150 SZ 2060 probe with pH sensor L 720 mm probe with pH sensor L 1170 mm probe with ORP electrode Au reference L 720 mm probe with ORP electrode Pt reference L 720 mm pH sensor epoxy body for normally clean liquids pH sensor glass body for dirty and contaminated liquids pH sensor glass body for polluted liquids pH sensor glass body for high tem
21. max Logic input function HOLD conditions Alarm state deactivated ALARM conditions Analog output activated Set points deactivated Alarm state activated Under Over range 0 20 Under Over range 4 20 Logic input activated deactivated Analog output keeps the value Set points keep the status 0 00 14 00 pH 0 00 14 00 pH 0 02 pH 1000 1000 mV FULL 1000 1000 mV FULL 1000 0 mV nEG 1000 0 mV nEG 0 1000 mV POS 0 1000 mV POS mV 0 0 100 0 seconds Act dEA 0 00 pH 14 00 pH 1000 mV 1000 mV 1000 mV 0 mV 0 mV 1000 mV 1 0s Act S4 1 S4 2 S4 1 S4 2 S4 1 S4 2 S4 1 S4 2 84 3 C4 1 0 20 4 20 mA 0 00 20 50mA 3 50 20 50mA 2 5 seconds for 98 250 Vac 600 ohm On OFF HoLd ALAr HOLD HOLD OFF RUN OFF ON __External contacts must be free voltage O yO Instruction manual Rev A 05 07 14 B amp C Nieuwkoop BV PH 7635 Password to access SETUP menu 0 999 0 10 1 Calibration and set point adjustment On OFF On S1 1 Temperature measuring unit C E C 2 1 Manual temperature 20 0 C 2 2 Delay setl 0 2 s 3 1 Delay set2 0 2 s 83 2 Alarm LO low value 0 00 pH 84 1 Alarm HI high value 14 00 pH 84 2 Alarm delay 1 0s S4 3 Logic input On OFF OFF i S61 Medify password to SETUP access 1 0 1 SIO 1 Password to access CONFIGURATION 0 999 0 11 1
22. n a buffer solution or tap water do not use deionized water for three hours before proceeding Instruction manual Rev A 05 07 19 B amp C Nieuwkoop BV PH 7635 You may also follow the instruction of the sensor s manufacturer In order to perform the pH electrode calibration you may also use B amp C Nieuwkoop buffer solutions Dip the sensor into the buffer solution pH 7 SZ 954 to perform the first point calibration zero calibration By pressing the key the unit will show the message amp Era LAL followed by the actual pH value or CAL GFF if the calibration function has been disabled into the set up menu display S1 1 4 or v press the keys to change the value according to the buffer solution value ENT 1 press to confirm and to end the calibration UPdHEE or dEro Error messages will appear The message of error must be confirmed if the calibration has not been performed Dip the sensor into the buffer solution pH 4 SZ 952 or pH 9 SZ 956 to perform the second point calibration sensitivity calibration By pressing the key the unit will show the message 5En5 LAL followed by the actual pH value or CAL UFF if the calibration function has been disabled into the set up menu display S1 1 4 Or v press the keys to change the value according to the buffer solution value ENT e press to confirm and to end the calibration UPdHEE or 5En5 Error messages will appear The me
23. nsor from the holder dip the sensor for 30 seconds in a 5 HCI solution or detergent in case of grease contamination rinse thoroughly the sensor into deionised water reinstall the sensor into the holder 5 4 INSTRUCTION FOR THE PLANT ENGINEER 5 4 1 Safety instruction Read the installation instruction Chapter 6 and check the following before switching on the unit and performing the configuration Check if the terminal 3 is connected to the ground check if the connections are correct check if connections are well fastened to the terminals check if eventual protective fuses have the correct value Eventual damages coming from wrong connections are not covered by warranty Instruction manual Rev A 05 07 25 B amp C Nieuwkoop BV PH 7635 5 4 2 Configuration MODE by pressing three times the key from display 1 0 the unit will show the message LanF amp Pre55 Ene display 11 0 By pressing the key the unit twill require the password insertion display 11 1 Bares 4 Or v press the key to insert the password ENT press to confirm the password and to enter the configuration menu 1f the password is not used press again the key Into the configuration menu the keys have the following functions 4 or v to change values or options shown on the displayed to confirm the value option if value option have been modified it will appear the message uPgREE MODE to exit f
24. or v press the key to insert the password ENT press to confirm the password and to enter the set up menu if the password is not used press again the key Into the set up menu the keys have the following functions 4 or v to change values or options shown on the display ENT to confirm the value option if value option have been modified it will appear the message UFdHEE to exit from the procedure and to turn to display 10 0 without any changing Display S1 1 Inhibition of zero sensitivity calibration and set point changing The following message will appear I CAL Funck an followed by the actual setting Un BFF Display 2 1 Selection of the temperature measuring unit The following message will appear 2 1 EETIP Un E followed by the actual setting PC PF Instruction manual Rev A 05 07 23 B amp C Nieuwkoop BV PH 7635 Display S2 2 Manual temperature compensation value in case the RTD is not connected to the unit The following message will appear de An EETIP followed by the actual setting 7L 7F and the actual value Display S3 1 Delay in seconds of the set point I relay The following message will appear 3 1 SEE dELAY followed by the actual value Display S3 2 Delay in seconds of the set point 2 relay The following message will appear Je SEE dELAY followed by the actual value Display 4 1 Minimum alarm value The following message will appear H i La
25. other expenses that have not been previously discussed will be charged to Customer 4 Our Sales Dept will contact You to inform You about the estimate or to offer you an alternative in particular when the repairing cost is too high compared to the cost of a new instrument the repairing results being technically impossible or unreliable 5 x In order to quickly return the repaired instrument unless differently required by the Customer the shipment will be freight collect and through the Customer s usual forwarder Instruction manual Rev A 05 07 35 B amp C Nieuwkoop BV PH 7635 TECHNICAL SUPPORT Data sheet In case of damage we suggest You to contact our Technical Support by email or phone If it is necessary for the instrument to be repaired we recommend to photocopy and fill out this data sheet to be sent along with the instrument so to help us identifying the problem and therefore accelerate the repairing process O ESTIMATE O REPAIR COMPANY NAME ADDRESS ZIP CITY REFER TO MR MISS PHONE MODEL S N DATE Please check the operator s manual to better identify the area where the problem seems to be and please provide a brief description of the damage SENSOR ANALOG OUTPUT POWER SUPPLY SET POINT CALIBRATION RELAY CONTACTS DISPLAY PERIODICAL MALFUNCTIONING gt DESCRIPTION Instruction manual Rev A 05 07
26. p BV PH 7635 6 6 6 Connecting the logic input The dry contacts voltage free coming from an external device must be connected to the logic input terminals 17 18 The activation and the configuration of the input logic is described in the Display S6 1 chapter 5 3 8 and C6 1 chapter 5 4 2 The hold or alarm functions are described in the item 6 0 of the chapter 4 2 Technical specifications Do not supply any voltage to the logic input terminals to avoid damages on the circuits 7 DISPOSAL If it shall became necessary to throw away this electronic equipment please follow the disposal laws of your Country Instruction manual Rev A 05 07 32 B amp C Nieuwkoop BV PH 7635 REAR PANEL CONNECTIONS PH 7635 eee te OO K C va AN OUT LOG IN ACE 5 VA MAX 50 60 Hz 85 264VAC _SET1_SET2_ ALARM T T 1 L N Quo c NO C NO C NC ifefsf fsjoj7fefofro PH7635 rev A A4 1 1 17 18 27 28 29 30 31 Power supply 85 264 Vac Ground Set point 1 N O contacts Set point 2 N O contacts Alarm N O contacts Alarm N C contacts Analog output Analog output Logic input RTD Pt100 Pt1000 input Reference electrode input Glass or metal electrode input Fig 2 Instruction manual Rev A 05 07 33 B amp C Nieuwkoop BV PH 7635 DIMENSIONS pH ORP controller 98 NiEuwkoor Bv AAH SWE DRILL PLAN INGOMBROPH7635 A4 1 2
27. perature and heavy alkaline liquids antinomy pH sensor epoxy body for liquids with HF contents ORP sensor in Au epoxy body for cyanide treatment ORP sensor in Pt epoxy body for generic use clean liquids ORP sensor in Au glass body for cyanide treatment ORP sensor in Pt glass body for generic use ORP sensor in Pt epoxy body for high temp and liquids with HF contents pH sensor body in PVDF autoclean 3 4 NPT thread pH sensor body in PVDF autoclean 3 4 NPT thread built in Pt100 ORP sensor body in PVDF autoclean 3 4 NPT thread Immersion probes holders and flow cells SZ 810 SZ 820 SZ 821 SZ 860 SZ 880 SZ 7101 SZ 7105 SZ 7108 SZ 7231 SZ 7233 immersion probe in PVC L 210 mm immersion probe in PVC L 400 mm immersion probe in PVDF L 400 mm immersion probe in PVC L 720 mm immersion probe in PVC L 1170 mm sensor holder in PVC for in line measures up to 40 C sensor holder in PVDF for in line measures up to 100 C sensor holder in AISI 316 for in line measures up to 110 C flow cell for one electrode and one temperature sensor flow cell for three electrodes and one temperature sensor Instruction manual Rev A 05 07 4 B amp C Nieuwkoop BV PH 7635 Temperature probes SI 520 SI 540 SP 514 Accessories BC 931 2 BC 931 3 SZ 740 SZ 911 SZ 9215 SZ 947 SZ 9441 Standard solutions SZ 952 SZ 954 SZ 956 SZ 961 SZ 964 Pt100 probe for
28. rom the procedure and to turn to display 11 0 without any changing Display C1 1 pH ORP selection The following message will appear ii MEAS followed by the actual setting PH B c P Display C1 2 Type of pH sensor if PH 7635 is used as pHmeter The following message will appear ig PH 5En5or followed by the actual setting but b HnE Display C1 2 Measuring ORP range if PH7635 is used as ORPmeter The following message will appear le UP cHnbE followed by the actual setting FULL nEG PLUS Instruction manual Rev A 05 07 26 B amp C Nieuwkoop BV PH 7635 Display C2 1 Type of RTD Pt100 or Pt1000 The following message will appear 2 1 EENP 5Em5or PE followed by the actual setting 00 1000 Display C3 1 Set point 1 function min max The following message will appear 3 1 SEE Funck van followed by the actual setting La H 1 Display C3 2 Set point 2 function min max The following message will appear Je SEE Funck van followed by the actual setting La H 1 Display C4 1 Alarm relay function activated deactivated The following message will appear 4 1 ALARIN FuncE ion followed by the actual setting HeE dER Display C5 1 Range of the analog output 0 20 or 4 20 mA The following message will appear 5 1 aut followed by the actual setting U 20 4 EU Display C6 1 Logic contact function hold alarm The following message will appear Bl Louie InPUE followed by the ac
29. s malfunctioning the controller goes automatically in manual compensation and it will show the value of compensation temperature Set points The instrument has two independent set points which can be programmed across the whole scale to activate the correspondent relay contacts SPST When a relay is activated the corresponding Led placed to the left side of the display will light up During the phase of activated delay the LED will flash Thanks to the specific front panel keys SET 1 and SET 2 setting the set point value is very simple A password can be set in order to avoid that other users may change the settings For each relay it is possible to select min max function delay Instruction manual Rev A 05 07 10 B amp C Nieuwkoop BV PH 7635 Alarm The instrument has an alarm relay which contact are SPDT type The alarm condition can be configured for higher or lower values of pH and ORP compared to the set ones logic input signal coming from an external device if this function is activated The alarm status can be seen on the LED marked ALM placed to the left of the display During the phase of activated delay the LED will flash The operator can set the activated deactivated Act Dea status of relay corresponding to the alarm condition and the delay function Analog output The instrument has an isolated analog output to send the measure value The output can be programmed 0 20 mA or 4
30. s to confirm and to end the calibration MODE press the key to exit from the procedure without changing the data this key allows to exit from all the procedure without changing the previous data setting 5 3 6 Temperature calibration MODE ESC By pressing the key from the main display the unit will access the temperature readout By pressing the key the unit will show the message dEra LRL followed by the actual value or CAL OFF if the calibration function has been disabled into the set up menu display S1 1 4 or v press the key to change the value ENT 8 press to confirm and to end the calibration UPOREE message or dEro Error will appear The message of error must be confirmed if the calibration has not been performed If the operator needs to turn to the factory calibration of the zero 4 v press the three keys together instead of using the 4 v keys Instruction manual Rev A 05 07 22 B amp C Nieuwkoop BV PH 7635 5 3 7 Manual temperature compensation If the RTD is not installed the unit will display the manual temperature compensation value Refer to the chapter 5 3 8 display S2 2 in order to change the manual temperature value 5 3 8 Set up MODE Se By pressing two times the key from display 1 0 the unit will show the message 5EE UP PrE55 Ent display 10 0 By pressing the key the unit will require the user to insert the password display 10 1 PRATS 4
31. ssage of error must be confirmed if the calibration has not been performed If the operator needs to turn to the factory calibration of the zero or the sensitivity a v press the three keys together instead of using the 4 v keys We suggest to calibrate the second point with buffer pH 4 if the meter will operate in acidic range and with the buffer pH 9 if the meter will operate in the alkaline range It is possible to perform the calibration by using the buffer solutions pH 4 and pH 9 We suggest to rinse the electrode in tap water after each dipping in the buffer solution in order to avoid their mixing and pollution In many applications it is enough to frequently perform only the zero calibration by using the buffer close to the measuring value in the process and the zero sensitivity calibration periodically After the calibration the operator will have to check the pH value of the solution If the value is not considered correct check the following Instruction manual Rev A 05 07 20 B amp C Nieuwkoop BV PH 7635 the buffer solution has a value not corresponding to the nominal one because of pollution the electrode is not working properly or the installation is not suitable the instrument has performed only the zero calibration and not the sensitivity calibration The error messages during the calibration inform the operator about the bad condition of the pH electrode The zero gt 2 pH will sho
32. t interrupt the cable in order to avoid interference in the measuring In case of extension cable use a junction box example SZ740 water tight and with high isolation terminals Keep the cable far away from power cables Instruction manual Rev A 05 07 28 B amp C Nieuwkoop BV PH 7635 6 6 ELECTRICAL INSTALLATION Refer to figure 2 or to the connections drawing on the back panel of the instrument The electrical installation consists of 1 connecting the power supply 2 connecting the electrodes or probes 3 connecting the temperature sensor 4 connecting the set points and alarm relays 5 connecting the analog output 6 connecting the logic input All connections to the instrument are made on detachable terminal strips located on the rear side The power connections are on a 10 terminals strip The signals connections are on a 5 terminals strip The analog output and logic input connections are on a 4 terminals strip 6 6 1 Connecting the power A Connect the ground to 3_terminal Connect the 86 264 Vac power to 1 2 terminals power the device by means of an isolation transformer avoid mains voltage from an auto transformer avoid mains voltage from a branch point with heavy inductive loads separate power supply wires from signal ones control the mains voltage value before powering the unit The electronic equipment can occasionally be damaged The plant engineer must consider this even
33. t to prevent eventual damages caused by the instrument malfunctioning 6 6 2 Connecting the electrodes or probes The connection of the electrodes is the most critical of the system The pH and ORP electrodes are connected to the central of the coax cable The reference electrodes are connected to the shield of the coax cable Connect the central of the coax cable to 31 high impedance terminal marked HI Connect the shield of the coax cable to 30 low impedance terminal marked LO We suggest to use just the original cable from the manufacturer to connect the electrode to the unit Instruction manual Rev A 05 07 29 B amp C Nieuwkoop BV PH 7635 The coax cable normally has a conductive black sheath between central and shield Remove this covering in order to avoid its contact with the terminal marked HI 6 6 3 Connecting the temperature sensor In order to display the temperature value and to effect the automatic temperature compensation on the pH measuring it is necessary to connect the RTD sensor Pt100 or Pt1000 If the temperature sensor is not connected interrupted or in a short circuit the unit will turn to the manual temperature compensation automatically Two wires connection of Pt1000 or Pt100 for short distance Use a suitable two wires cable Connect the RTD to 27 28 terminals and install a jumper between 28 29 terminals The two wires connection of the Pt100 may require the temperature zero calibr
34. t1000 3 wires C PF 0 0 100 0 C 32 0 212 0 F 0 1 C 0 1 F 10 0 C 14 0 F 110 0 C 230 0 F 2 0 C 4 3 6 F 0 100 C 32 212 F OC 0F 21 20 C 68 F 22 __Manual temperature value 0 100 C 32 212 F 20 C 68 F SET POINT 1 Action ON OFF Set point pH Hysteresis pH Set point Rx Set point Rx Set point Rx Hysteresis Rx Delay Function Relay contacts SET POINT 2 Action ON OFF Set point pH Hysteresis pH Set point Rx Set point Rx Set point Rx Hysteresis Rx Delay Function 0 00 14 00 pH 0 02 pH 1000 1000 mV FULL 1000 0 mV 0 1000 mV mV 0 0 100 0 seconds Hi Lo Max Min nEG POS SPST 220V 5A resistive 0 00 14 00 pH 0 02 pH 1000 1000 mV FULL 1000 0 mV 0 1000 mV mV 0 0 100 0 seconds Hi Lo Max Min nEG POS SPST 220V 5A resistive 0 00 pH 0 mV 0 mV 0 mV 0 2 s S Lo C 0 00 pH 0 mV 0 mV 0 mV 0 2 s Hi __ Relay contacts SPST220V SAresistive Instruction manual Rev A 05 07 jf ee B amp C Nieuwkoop BV PH 7635 Low value pH High value pH Hysteresis pH Low value Rx High value Rx Low value Rx High value Rx Low value Rx High value Rx Hysteresis Rx Delay Contact function Relay contacts Output range Response time Isolation R
35. tructions are WARNINGS ignored or not correctly followed damage to the instrument can be caused Note This symbol is to invite the user to pay particular attention to a specific section of the manual dd This symbol can be found in those chapters where there have been changes from the previous releases Instruction manual Rev A 05 07 7 B amp C Nieuwkoop BV PH 7635 3 3 HOW TO READ THE INSTRUCTION MANUAL The manual includes all necessary information to fully comprehend the product to install it correctly to use it and preserving it and finally to achieve the performances for which You have selected it and purchased it The manual is intended for experienced and prepared personnel who has knowledge of electronic instrumentations and industrial plants typical operations The index guides the reader through the chapters and through the contents that he wishes to know or exploit In particular the first chapters narrate the general characteristics and they allow the reader to become more familiar with the product by describing its accessories and its use The user can then verify if he she has the necessary know how to use the controller As described in the following chapters the instrument was designed by keeping in mind three different kinds of users generic use end user control maintenance staff installation plant engineer Note Maintenance staff could be more interesting in t
36. tual setting Hat d AL Ar Display C11 1 Password for the configuration menu The following message will appear Lt Conf PASS followed by the actual password Instruction manual Rev A 05 07 27 B amp C Nieuwkoop BV PH 7635 6 INSTALLATION 6 1 PACKING LIST The carton box contains N 1 the instrument with s n label N 2 fixing clamp N 1 instruction manual 6 2 UNPACKING 1 Remove the instruction manual 2 Remove the controller from the carton box 3 Remove the plastic protective envelope and keep the two fixing clamp 6 3 STORAGE AND TRANSPORTATION In case of long storage period keep the instrument in a dry area In case of tranportation use the original carton box 6 4 INSTALLATION OF THE UNIT The instrument can be installed in a watertight enclosure or in a switch board The panel mounting must be done on a flat surface in a position protected from hits moisture and corrosive fumes 6 5 INSTALLATION OF THE PROBE Follow the specific instruction of the submersible or in line probes The submersible probes of B amp C Nieuwkoop contain the sensor electrode and feature a plastic ring to adjust the immersion into the liquid The installation of the sensors by means of the B amp C Nieuwkoop in line holders SZ 7101 SZ 7105 SZ 7108 must be done with the sensor in vertical position The cable must be protected from rain corrosive agents through a plastic tubing Do no
37. ust be confirmed if the calibration has not been performed If it is necessary to calibrate the sensitivity dip the sensor in the second buffer solution By pressing the key the unit will show the message 5En5 LAL followed by the actual ORP value or CAL OFF if the calibration function has been disabled into the set up menu display S1 1 4 or v press the keys to change the value according to the buffer solution value Instruction manual Rev A 05 07 21 B amp C Nieuwkoop BV PH 7635 ENT press to confirm and to end the calibration UPdHEE message or 5En5 Error will appear The message of error must be confirmed if the calibration has not been performed If the operator needs to turn to the factory calibration of the zero or the sensitivity 4 v press the three keys together instead of using the 4 v keys We suggest to rinse the electrode in tap water after each dipping in the buffer solution in order to avoid their mixing and pollution Same as for the pH calibration the error messages will inform about the need for replacing the sensor 5 3 5 Set point calibration E Jo By pressing the key the unit will show the message SEE BEEE Hi or La depending on the configuration done in display C3 1 o C3 2 followed by the actual value 4 Or v press the keys to change the value CAL OFF will appear if the calibration has been disabled in the set up display S1 1 ENT pres
38. w the message dEro Error to indicate the pollution of the reference electrode and the needing of replacement The sensitivity lt 80 70 for the antimony electrode or gt 110 140 for the antimony will show the message 5En5 Errar to indicate the isolation loss in the connection or the need for replacing the electrode Temperature compensated operations need the following procedures when calibrating the meter the pH value has to be considered at the working temperature of the buffer solution before calibrating immerse the electrode and the RTD in the buffer solution and adjust the value after the temperature sensor has reached the thermal equilibrium Check periodically the calibration 5 3 4 ORP calibration The meter is delivered with a laboratory calibration by means of a Vdc generator If calibration is necessary we suggest to perform only the zero calibration In order to calibrate the ORP electrode follow the two points calibration instruction by using the buffer solutions mod SZ 961 mV 220 and SZ 964 mV 468 By pressing the key the unit will show the message amp Era LRL followed by the actual ORP value or CAL GFF if the calibration function has been disabled into the set up menu display S1 1 4 or v press the keys to change the value according to the buffer solution value ENT A M press to confirm and to end the calibration UPdHEE message or dEra Error will appear The message of error m
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