pH / redox transmitter User Manual
Contents
1. pHix Compact mounted directly on a immersion bracket item no 155205 which is fastened with universal bracket item no 200205 and wall bracket item no 200215 Mounting in closed systems The electrode is filled with a liquid which should cover the membrane internally at all times Therefore pHix Compact should not be mounted in angles exceeding 75 from vertical Because of the liquid inside the electrode pHix Compact should always be mounted in angles less than 75 from vertical pHix Compact can be screwed into a pipe stub with 2 outer thread by means of an union item no 521409 that is placed over the housing flange after removal of the Switch ring Pull off the Put on the Put on the switch ring union switch ring if needed The switch ring is only used for buffer ad justment calibration but it is also possible to perform a buffer adjustment without using the switch ring See also pg 16 Buffer adjustment SW 836502 p FI zx compact Mounting Mounting on a pipe stub In order to ensure a tight seal and correct function of pHix Compact the following should be complied with 1 The pipe stub must be flush and free of Scales burrs etc 2 The pipe stub must have a length so that the tip of the electrode is exposed approximately 10 mm into the liquid 3 Take care to have adequate room for mounting and removal o f2. GB pHix Compact Manual 0709 4 p FI zx compact pH transmitter mk Introduction Thank you for choosing a pHix Compact pH Redox transmitter We have done everything possible to make a pH Redox transmitter that can fulfill all your demands pHix Compact is very simple to install and connect as electrode fitting and transmitter is built together in the same NEMA 6X class enclosure By doing so all error sources like e g bad cable connections and leaking fittings are eliminated As pHix Compact is equipped with an uni on flange in one end and male thread in the other the transmitter is very easily mounted in open tanks as well as pipes without the usual use of fittings You can always contact your representative or the MJK Service Hotline for advice and guidance Also take a look at http www phix dk PHix is registered trademark of MJK Safety instructions 1 Read this manual carefully 2 Be aware of the environment on the in stallation site Wear necessary protective equipment and follow all current safety regulations 3 pHix Compact can provide a start signal for dangerous machinery Always ensure that connected machinery and other equipment are effectively being put out of service i e removal of main fuses lock main and or security switches in off position before commencing setting fault finding service and maintenance work etc Repair 1 Repair must only made by MJK or b
3. flashes every 5 sec When the buffer adjustment has finished sucessfully the LED will start to give 2 short flashes every 5 sec The zero point is now set 3 urn the switch ring from position 7 to position 4 and dip the electrode tip into the pH 4 buffer solution In service measure Buffer adjustment in The LED will now begin to give 3 short ment pH 4 buffer flashes every 5 sec 1 flash every 5 When the buffer adjustment has finished Second sucessfully the LED will start to give 2 short flashes every 5 sec The span angle is now set Buffer adjustment in Buffer adjustment in pH 7 buffer pH 10 buffer GB pHix Compact Manual 0709 18 p FI zx compact Buffer adjustment mjk Buffer adjustment using the tilt switch Remember to clean the electrode as descri bed in the previous section Only the built in tilt switch is active when the switch ring has been removed for more than 10 minutes The tilt switch inside pHix Compact detects when the electrode tip is turned upwards When the electrode tip has been turned upwards in more than 30 seconds pHix Compact will go into buffer adjustment mode Proceed as described Remove pHix Compact from the process rinse the electrode and turn the electrode upside down The buffer adjustment mode is initiated after approx 30 seconds this is indicated by the LED with 3 short flashes every 5 seconds If pHix Compact is dipped
4. rung bezieht mit der den folgenden Nor me en oder normativen Dokument en bereinstimmt EN 50081 1 1995 EN 50082 1 1995 EN 60730 Gem ss den Bestimmungen der Richtlinie 89 336 EWG 73 23 EWG 93 68 EWG Declaraci n de Conformidad Nosotros MJK Automation A S DK 2850 Naerum declaramos bajo nuestra nica responsabilidad que el producto MJK pHix pH redox temperature transmitter auquel se r f re cette d claration est conforme la aux norme s ou autre s document s normatif s EN 50081 1 1995 EN 50082 1 1995 EN 60730 conform ment aux dispositions de Directive 89 336 EWG 73 23 EWG 93 68 EWG I al quale questa dichiarazione si riferisce amp conforme alla seguente normativa e standard o ad altri documenti di normativa e EN 50081 1 1995 EN 50082 1 1995 EN 60730 conformemente alla disposizioni della Direzione 89 336 EWG 73 23 EWG 93 68 EWG 28 09 2004 Mb n UC nd i v Jens Kruse al cual se refiere esta declaraci n est en conformidad con la s siguente e norma s u otros documentos normativos EN 50081 1 1995 EN 50082 1 1995 EN 60730 segun las disposiciones de la s directiva s 89 336 EWG 73 23 EWG 93 68 EWG p FI zx compact pH transmitter Contents Introduction 5 Maintenance 21 Safety instructions 5 General annen 21 ssec 5 IHteEWVals itor etes Ferunt 21 Exp
5. 2006 gt 07 2007 gt Nr Designation Color Color Color Signal 1 Shield 2 12 30 VDC Red Red 1 Black pH or redox signal 3 4 20 mA Black Black 2 Black Output 1 Q 9 pHix Compact with 2 x 4 20 mA outputs 1 for ph or redox measurement and 1 for temperature measurement PVC Cable PVC Cable PUR Cable 2005 2006 gt 07 2007 gt Nr Designation Color Color Color Signal 1 Shield 2 12 30 V DC Red Red 1 Black pH or redox signal 3 4 20 mA Black Black 2 Black Output 1 4 12 30 V DC Yellow Orange Grey Temperature signal 5 4 20 mA Orange Brown Brown Output 2 18 SW 836502 p FI zx compact Mounting mjk Cutting the signal cable The cable comes with stripped wire ends ready for mounting 2 Black Grey Brown a 1 Black i Shield 2 Black u Shield j Uncutted cable end for pHix Compact with 1 respectively 2 signal outputs Besides the signal wires the cable also con tains wires solely used for service purposes and software upgrades These cables are exposed when the cable is cut The cable for a pHix Compact with dual outputs is cut and the service wires are exposed Grey 1 Black Brown 2 Black Shield Service wires The service wires must not be used Only the signal wires 1 black 2 black grey brown and shield may be used Extending the signal cable There are no specific demands to the cable that may be used for extending the e
6. buffer adjustments and cleaning is depending widely on the working conditions Therefore the easiest way to find the most appropriate cleaning interval is by feeling one s way For instance start out with cleaning and buffer adjustment every week If the measurement is unchanged or just slightly changed after the buffer adjustment the electrode were not dirty or just slightly dirty and the cleaning interval can be chan ged to 2 weeks and after that 1 month The intervals are equally reduced if the elec trodes are very dirty and the measurement is significally changed after buffer adjusting There are no general guidelines to clea ning and adjustment men in most cases a monthly adjustment is sufficient Before beginning a buffer adjustment the electrode must be thoroughly washed first in running water if necessary a degreasing fluid like for example 1096 hydrochloric acid solution and there after in de ionised water before the electrode is put into the buffer solution and in between every step of the buffer adjustment Redox electrodes Redox electrodes require cleaning like pH electrodes but not buffer adjusting However MJK do deliver redox buffers for control of electrode and transmitter If the transmitter does not show the correct value when put into the buffer solution the electrode must be exchanged Cleaning of elektrodes Use clean potable water for cleaning the electrode A 1096 hydrochloric acid
7. practice by dipping pHix Compact in solutions buffers with known pH values The calibration is made by using these known pH values as a reference point pHix Compact can be buffer adjusted on 1 2 or 3 reference points but it is normally Sufficient to buffer adjust using 2 reference points and typically with buffer solutions with pH value 4 and 7 The first reference point sets the correct zero point for the measurement curve and the second reference point sets the correct angle for the measurement curve pH 14 pH 10 pH7 pH 4 pH 0 d First buffer adjustment with pH 7 as reference pH 14 pH 10 pH7 pH 4 Second buffer adjustment with pH 4 as reference pHix Compact is as standard delivered to use buffer values at the values 4 7 and 10 but other values can be chosen via HART communication mjk Buffer liquid is delivered as ready to use solutions with the pH values 4 7 and 10 During the buffer adjustment pHix Compact is calibrated in accordance with the pH values of the buffer solutions It is therefore important to use as accurate buf fer solutions as possible i e a pH 7 buffer solution really has a pH value of exactly 7 MJK delivers buffer solutions for both pH og redox calibration The pH value of the buffer liquid is depen dant of the temperature and the stated pH value is valid at 25 C Buffer liquid has limited lifetime Bufferliquid for pH 4 and 7 has a life
8. solution can be used for cleaning if the electrodes are gre asy Protein coatings is removed with Pepsin cleaning fluid item number 163020 Electrode lifetime The expected lifetime of the electrodes is dependant of the measurement The lifetime is given with reservation as the physical conditions as well as the tempera ture pressure and pollution of the fluid has great influence on the stated lifetime The lifetime is based on 25 C but if the temperature is doubled the lifetime will be halved PH electrodes in purifying plants for ordinary household wastewater lasts approximately 1 year whereas the lifetime of pH electrodes in industrial plants is dependent on measu ring application and the process Redox electrodes have a lifetime of approxi mately 2 years depending on cleaning 21 SW 836502 PH compact Spares and specifications mjk Spares Specifications Item no Description pHix Compact 160310 pHix pH electrode O point 4 6 pH Supply voltage 12 30 V DC 160311 pHix pH electrode 0 point 7 0 pH Consumption App 50mW 160312 pHix redox electrode Temperature range 20 60 C 570054 O ring for electrode Housing material Ryton PPS and 571030 Black rubber gasket for electrode stainless steel 571031 White rubber gasket for electrode EN 1 4404 ASTM 316L 521409 Union ring w Viton gasket Enclosure IP 68 withstands for mounting of pHix on pipe end submers
9. 3 90 mA Calibration not possible Exchange the electrode 3 95 mA pH lower than Readjust the measuring range to a lower range measuring range 4 00 mA Error on startup Disconnect the transmitter from PSU for min 5 seconds and try again 22 00 mA pH higher than Readjust the measuring range to a higher range measuring range Standard transmitter configuration The transmitter is standard configured as described below on delivery pH transmitter item no 203111 Measuring range 0 14 pH 4 20 mA O point 4 6 pH pH and temperature transmitter item no 203112 Measuring range 0 14 pH 4 20 mA O punkt 4 6 pH Temperature 0 50 C 4 20 mA Redox transmitter item no 203121 Measuring range 1000 to 1000 mV 4 20 mA HART commands All commands and settings can be read and set by means of HART commandos Ask for separate documentation regarding HART commands 23 SW 836502 e p Hxc compact Appendices mjk Accessories for mechanical mounting Union for mounting on pipe end item no 521409 Fitting for submersion item no 155205 Forlaenger for universalbeslag bestillingsnr 200215 Universal bracket 1 thread item no 200205 ISO 228 1 GB pHix Compact Manual 0709 24 p FEL compact Appendices mk Accessories for electrical mounting Loop supplied digital indicator type 531 item no 200125 See also
10. MJK Automation A S 2 Byageren 7 y li By DK 2850 Naerum Denmark Tel 45 45 56 06 56 Fax 45 45 56 06 56 mjk mjk com www mjk com pri compact pH redox transmitter User Manual GB pHix Compact Manual 0709 SW 836502 PH compact pH transmitter mk Konformitetserkleering Vi MJK Automation A S DK 2850 Naerum p tager os det fulde ansvar for at produktet Declaration of Conformity We MJK Automation A S DK 2850 Naerum declare under our sole responsibility that the product Konformit tserkl rung Wir MJK Automation A S DK 2850 Neerum erkl ren in alleiniger Verantwortung dass das Produkt MJK pHix pH redox temperature transmitter som denne erkleering ang r er i overensstemmelse med folgende standard er eller andre normdokument er EN 50081 1 1995 EN 50082 1 1995 EN 60730 efter bestemmelserne i direktiv 89 336 E F 73 23 E F 93 68 E F Declaration de conformite Nous MJK Automation A S DK 2850 N rum d clarons sous notre seule responsabilit que le produit to which this declaration relates is in conformity with the following standard s or other normative document s EN 50081 1 1995 EN 50082 1 1995 EN 60730 following the provisions of Directive 89 336 EWG 73 23 EWG 93 68 EWG Dichiarazione di conformit Noi MJK Automation A S DK 2850 Naerum dichiariamo sotto la nostra esclusiva responsabilit che l apparecchio auf das sich diese Erkl
11. and without cracks and scratches to avoid penetration of liquid in the center plug connection Check that gasket and O ring are complete and clean ant that they are placed correctly Likewise the connectors in both transmitter and electrode should be absolutely clean and dry Eventually use a dry cloth Check that the connectors are absolutely clean and dry GB pHix Compact Manual 0709 e p FI zx compact Mounting mjk 1 Smear the O ring in acid free grease or Vaseline 2 Check that the O ring is placed correctly in the recess of the new electrode 3 Check that the hole for the electrode in the pHix Compact is completely dry if necessary use a dry cloth 4 Serew in the new electrode and tighten by hand Do not use tools 5 Finally pHix Compact must be buffer adjusted prior to commissioning See pg 16 9 SW 836502 p FI zx compact Mounting mjk Mechanical mounting General pHix Compact is made from Ryton PPS and stainless steel EN 1 4404 ASTM 316L and has because of this a tremende ous resistance against chemicals pHix Compact can be used without any further preparation for measuring in solvents and strong basic or acid liquids Open and closed systems pHix Compact is designed for measuring in both open and closed systems Open systems is e g gutters wells and reservoirs Closed systems is e g pipe Systems or tanks vessels pHix Compact ha
12. data sheet 6 3 533p mj pH 230 V AC digital indicator type 533 with built in 24 V DC power supply and 2 relay outputs for alarm control etc item no 200130 See also data sheet 6 3 Power supply type 515 item no 200100 See also data sheet no 6 3 25 SW HW 837999 837999 e p FI zx compact pH transmitter mjk GB pHix Compact Manual 0709 26 e p FI zx compact pH transmitter mk Liability MJK Automation A S are liable to the common rules of Danish law on product liability however the liability is reduced to coverage of our public liability insurance of products To the extent where nothing else follows in lines of invariable rules of law we are not liable for loss of profits and working deficits or other indirect losses Changes As our products are developed continuously we reserve the right to make any alterations without prior notice 27 SW 836502 e p FI zx compact pH transmitter mjk GB pHix Compact Manual 0709 28
13. ffer with pH value pH 4 7 Buffer adjustment in buffer with pH value pH 7 10 Buffer adjustment in buffer with pH value pH 10 If the switch ring is set to one of the positi ons 4 7 or 10 the LED will give out 3 short flashes every 5 seconds If pHix Compact is being put into a buffer liquid with the same value as the switch ring is set to pHix Compact will automa tically begin to scan for a buffer with the same value When the value is found pHix Compact will automatically set the O point or span to the correct value and the LED will indicate this with 2 short flashes every 5 seconds pHix Compact is now ready either for mea surement or for another buffer adjustment at another pH value pHix Compact determines automatically if zero point or span need to be adjusted depending of the electrode s zero point and the preceeding buffer values If pHix Compact cannot find the pH value for the selected buffer solution it will go into alarm condition which is indicated with continuous LED flashes every second SW 836502 p FI zx compact Buffer adjustment Example of buffer adjustment in pH 4 and 7 1 With the switch ring in position M flush the electrode tip in demineralised water The LED gives 1 short flash every 5 Sec 2 Turn the switch ring from position M to position 7 and dip the electrode tip into the pH 7 buffer solution The LED will now begin to give 3 short
14. into a buffer solution with a value of 4 7 or 10 pH pHix Compact automatically search for a buffer with one of those values When the correct value is found the zero point or span will automatically be set to the right value The LED will give 1 short flash every 5 seconds for indication of a succesful calibration pHix Compact is now ready to be put into Service or for another buffer adjustment with another pH value If a new buffer adjustment to another or same pH value pHix Compact is simply turned upside down again with the elec trode tip pointing upwards in approximately 30 seconds until the LED gives 3 short flashes every 5 seconds whereafter above procedure is repeated If oHix Compact cannot find the correct value for the selected buffer liquid the trans mittter will go into fault condition indicated by a flash every second The pHix Compact software determines automatically whether it is the zero point or the span that need adjustment depending on the zero point value of the electrode and the preceeding buffer values SW 836502 e p FI zx compact Buffer adjustment m ku GB pHix Compact Manual 0709 20 p HIP compact Maintenance mjk General A pH or redox measuring system require maintenance with regular intervals Cleaning and buffer adjustment calibration is a normal and necessary maintenance that should be carried out regularly Intervals The interval between
15. ion to 10 mWG 521441 Viton gasket for union ring 2 O 14 pH 1000 1000 The followin is recommended for cleaning and buffer adjustment Input impedance Measuring input 10 ohm Reference input 109 ohm Temperature comp 20 80 C Temp electrode Built in behind steel section Buffer adjustment Automatic with tilt switch Switch ring or HART command CE approvals EN50081 1 EN50082 1 Item no Description 163020 Pepsin solution 0 251 163030 pH buffer 6 x 25ml ampoules 2 pcs pH 4 pH 7 and pH 10 163032 pH buffer 1 liter pH 4 163034 pH buffer 1 liter pH 7 163036 pH buffer 1 liter pH 10 163040 Redox buffer 6x25ml 230 mV Pt Ag AgCl Dimensions 267 66 a 49 66 red separately 14 RG ISO 228 1 NB Union ring must be orde GB pHix Compact Manual 0709 22 p FEL compact Appendices mjk Error codes Symptom mA signal Fault Remedy Constant current signal Electrical connection Check connection and make the necessary or 0 mA is not made correctly corrections Unsteady current signal Undervoltage Check the voltage at transmitter Min voltage max load gt 12 V DC 3 80 mA Undervoltage Check the voltage at transmitter Min voltage max load gt 12 V DC 3 85 mA Electrode error Exchange the electrode
16. losion hazardous areas 5 Redox electrodes 21 Construction vans eser 6 Cleaning of elektrodes 21 Product identification 6 Electrode lifetime SPAIES nassen Mounting ecrire 7 P mE Electrode types eee 7 Specifications Mounting the electrode 8 Dimensions Gasket O ring and plug 8 Mechanical mounting 40 Appendices rer 23 General 10 Error CODES tts 23 Open and closed systems 10 Mounting in open channels and Standard transmitter reservoirs s 10 configuration nnen 23 Mounting in closed systems 11 HART commands 23 Mounting on a pipe stub 12 i i Accessories for mechanical Electrical mounting eee Houni 24 SR uus e i eut ud QUIMMIN O MORAN Signal cable Accessories for electrical Cutting the signal cable MOUNINO secet tet 25 Extending the signal cable 14 Connection examples 15 Local display ssi nien 15 Panel display eere 15 Connection to PLC PLS 15 Buffer adjustment 16 ET 01 einen a 16 Buffer NQUIG usce acentos 16 Cleaning isan 17 Buffer adjustment using the switch ring nnee 17 Example of buffer adjustment IN PH 4 and A 18 Buffer adjustment using the tilt Switch heads ne 19 SW 836502 e p FI zx compact pH transmitter mjk
17. pHix Com pHix Compact is mounted correctly when the pact electrode tip is exposed approximately 10 mm out from the inner lining of the pipe 4 The working pressure of the system must not exceed 5 bar g 5 The working temperature of the s ystem must not exceed 80 C See also the following illustrations for correct adaptation to the pipe system Min 320 mm free space for mounting re moval of pHix Compact 2 outer pipe thread ISO Viton gasket 228 1 Min 25 mm 80 mm to thread inner lining Max working pressure 5 bar g Maks working temperature 80 C GB pHix Compact Manual 0709 12 p FI zx compact Mounting mjk Electrical mounting General pHix Compact must not be installed in explosion hazardous locations pHix Compact should be connected to an active 4 20 mA input or be supplied from a separate 12 30 VDC voltage source Max power consumption is 50 mW pHix Compact s 4 20 mA output s is gal vanically separated from the liquid Signal cable pHix Compact comes with either 1 or 2 galvanically separated signal outputs Note PHix Compact is delivered with cables made of PVC or PUR Check the type of cable according to the specifications before con necting pHix Compact 9 pHix Compact with 1 x 4 20 mA output for ph or redox measurement PVC Cable PVC Cable PUR Cable 2005
18. s class IP 68 enclosure and therefore withstands submersion into open system to a max pressure of 1 bar 10 mWG 5 bar pHix Compact con forms to pressure Vy class PN 5 and can therefore be mounted in closed systems with a working pres sure of max 5 bar barg Mounting in open channels and reservoirs Due to the lifetime of the electrode and measurement accuracy the following should possibly be complied with when mounting pHix Compact 1 pHix Compact should be mounted on a location with a good liquid circulation 2 The electrode tip should be minimum 30 cm below the liquid surface 3 The electrode tip must not touch the bottom Suspended in the cable If the liquid is flowing relatively slow and therefore giving no risk of pHix Compact hitting the side of the channel reservoir pHix Compact may be suspended in the cable by means of a cable bracket pHix Compact is submerged directly into the liquid and is suspended in the cable by means of a cable bracket item no 560916 GB pHix Compact Manual 0709 p FI zx compact Mounting mjk Mounted on a pipe end When measuring in e g open tanks inlet wells or gutters where strong currents can occur pHix Compact should be firmly fixed Fixed mounting can be made by means of a pipe with 5 4 inner thread ISO 228 1 and screw pHix Compact directly into the pipe
19. tem number Serial no Item description amp Electrode specifi cation An identical marking is found on the pH transmitter cable GB pHix Compact Manual 0709 e p FI zx compact Mounting mjk Electrode types The electrode housing is marked with information about electrode type and measuring range for the actual electrode pH electrode mjk 0 4 6 pH 160310 pH electrode item no 160310 1 14 pH 10 80 C 0 4 6 pH pH electrode mjkay 55 160311 PH electrode item no 160311 1 14 pH 10 80 C 0 7 0 pH Redox ORP mk electrode 160312 Redox electrode item no 160312 0 80 C 7 SW 836502 p FI zx compact Mounting mjk Mounting the electrode Upon delivery of pHix Compact the elec trode is not mounted pHix Compact is configured for the electrode type included in the delivery and therefore it must only be used together with the electrode with which is was delivered pHix Compact shoud be used only with the electrode type included the delivery Contact MJK if other electrode types should be used Replacement of the electrode to another of same type does not require reconfiguration The electrode must not become dry Therefore do not remove the protective cap before before commissioning of pHix Compact Gasket O ring and plug It is very important that both gasket and O ring and packing surfaces is clean and smooth
20. time of approx 1 year and buffer liquid for pH 10 is so mewhat shorter Note that buffer liquid with pH 10 is very unstable and should therefore be disposed of no more than 1 hour after it has been poured from the bottle GB pHix Compact Manual 0709 p FI zx compact Buffer adjustment mjk Cleaning Before initiation of a buffer adjustment the electrode should be rinsed in running water and additionally in demineralized water be fore the electrode is lowered into the buffer liquid and again between every step in the buffer adjustment process Use only fresh buffer solutions Dispose of any used buffer liquid Take care that transmitter electrode and buffer solution has the same temperature preferably approx 25 C Put eventually pHix Compact in a bucket of lukewarm water before commencing a buffer adjustment Buffer adjustment using the switch ring Remember to clean the electrode as descri bed in the previous section When the switch ring has been put on for at least 10 minutes it will only be possible to buffer adjust pHix Compact with the switch ring The switch ring has 4 positions and must only be set to one of these positions in order to obtain correct function Pos Function M Measurement The switch ring should always be in this positioni during normal service measuring This is indicated by the LED that is flashing for approx every 5 seconds 4 Buffer adjustment in bu
21. xisting cable except that it should be shielded and that the voltage drop should not be too big pHix Compact is a passive transmittter Considerations should be taken regar ding the voltage drop over the signal cable The supply voltage on the site must not drop below 12 V DC at maximum current 20 mA In order not to compromise operational re liability the cables should be interconnected by means of a watertight connection box item no 200590 tr pesee esoes 7 MJK connection box item no 200590 GB pHix Compact Manual 0709 e p FI zx compact Mounting mjk Connection examples Local display MJK Power MJK Digital Supply 515 Indicator 531 Cable from pHix Compact Panel display MJK Digital Indicator 533 Cable from 4 20 mA signal with PHIx Compact L gt mi N 24 V DC supply from 533 R1 R2 2 x voltage free relay outputs Connection to PLC PLS MJK Power Supply 515 00000000 Aare A20 PLC PLS with Aue passive input coe Cable from TO pHix Compact nn Q Alt A20 PLC PLS with n active input dre Cable from s 12 30 VDC pHK Compact O 15 SW 836502 p FI zx compact Buffer adjustment General In order to ensure a precise and stable pH measurement pHix Compact must be buf fer adjusted with regular intervals Buffer adjustment is a calibration which is carried out in
22. y a Service representative approved by MJK Explosion hazardous areas pHix Compact must not be installed in explosion hazardous areas SW 836502 I FI zx compact Introduction mjk Construction pHix Compact is a 4 20 mA 2 wire trans mitter with power supply and measuring signal transmitted over the same two wires pHix Compact also has HART communi cation capabilities via the mA wires where both the primary measuring signal pH or re dox and the secondary measurement signal can be read HART communication gives the possibility to configure nearly all para meters like measuring ranges alarm limits electrode parameters and also commands for buffer adjustment HART communication requires that pHix Compact is connected to a HART commu nicator or a PLC with HART interface pHix Compact is delivered as standard for pH or redox masurement but can also be delivered for other types of measurement and non standard settings Product identification Check that the item s delivered corre sponds to the ordered item s The item number is printed on a label that is sticked onto the packing Shown below is the label for a delivery including a pHix Compact transmitter with pH electrode with zero point at pH 4 6 r i 203110 mk pHix Compact pH temp transmitter Complete with electrode 160310 HALM S no 100 160310 pH elektrode 0 4 6pH 0 14 pH 0 80 c M J51503 D I
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