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pHix® Compact

EN 4.10  Version 2007

Mounting / Eletrical mounting

21

pHix® Compact uncut cable-end with one, respectively two, signal outputs.

 

Extending the signal cable

There are no specific demands to the cable that may be used for extending the 
existing cable, except that it should be shielded and that the voltage drop 
should not be too big.

Note!

 pHix® Compact is a passive transmitter. Considerations should be taken 

regarding 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 reliability, the cables should be 
interconnected by means of a watertight connection box (item no. 200590).

Summary of Contents for MJK pHix Compact

Page 1: ...Manual EN 4 10 Version 2007 pHix Compact PH REDOX TRANSMITTER...

Page 2: ...pHix Compact EN 4 10 Version 2007 2 Your notes...

Page 3: ...systems 16 Mounting on pipe socket 17 Eletrical mounting 19 Electrical mounting in general 19 Signal cable 19 Cutting the signal cable 20 Extending the signal cable 21 Connection examples 22 Local di...

Page 4: ...pHix Compact EN 4 10 Version 2007 4 Appendencies 36 Error codes 36 Standard transmitter configuration 36 HART commands 37...

Page 5: ...pHix Compact EN 4 10 Version 2007 Declaration of conformity 5 Declaration of conformity...

Page 6: ...ittings You can always contact your representative or the MJK Service Hotline for advice and guidance Also take a look at www mjk com1 pHix Compact is registered trademark of MJK Measurements and stan...

Page 7: ...gnal can be read HART communication gives the possibility to configure nearly all parameters like measuring ranges alarm limits electrode parameters and also commands for buffer adjustment HART commun...

Page 8: ...ix Compact EN 4 10 Version 2007 Introduction Product identification 8 1 2 3 4 Item number Item description Serial number Electrode specification An identical marking is found on the pH transmitter cab...

Page 9: ...ring range for the actual electrode pH electrode item no 160310 1 14 pH 50 176 F 10 80 C 0 4 6 pH pH electrode item no 160311 1 14 pH 50 176 F 10 80 C 0 7 0 pH Redox electrode item no 160312 176 F 0 8...

Page 10: ...st not become dry Therefore do not remove the protective cap before before commissioning of pHix Compact Gasket and O ring It is very important that both gasket and O ring and packing surfaces are cle...

Page 11: ...clean and dry Lubricate the O ring in acid free grease or Vaseline Check that the O ring is placed correctly in the recess of the new electrode Check that the hole for the electrode in the pHix Compac...

Page 12: ...or stainless steel EN 1 4404 ASTM 316L and because of this it has a tremendous resistance against chemicals pHix Compact can without any further preparation be used for measuring in solvents and stron...

Page 13: ...Version 2007 Mounting Mechanical mounting 13 THE US ALL OTHERS pHix Compact has class IP 68 NEMA 6X enclosure and therefore withstands submersion into open system to a max pressure of 14 psi or 30 ft...

Page 14: ...psi 5 bar Mounting in open channels and reservoirs Due to the lifetime of the electrode and measurement accuracy the following should be complied with when mounting pHix Compact pHix Compact should b...

Page 15: ...Mounting Mechanical mounting 15 Mounted on a pipe end When measuring 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 screwing pHi...

Page 16: ...mersion 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 cov...

Page 17: ...al of the switch ring Pull off the switch ring Put on the union Put on the switch ring if needed The switch ring is only used for buffer adjustment calibration but it is also possible to perform a buf...

Page 18: ...emoval of pHix Compact The working pressure of the system must not exceed 72 psi 5 bar g The working temperature of the system must not exceed 176 F 80 C See also the following illustrations for corre...

Page 19: ...Hix Compact must not be installed in explosion hazardous locations pHix Compact should be connected to an active 4 20 mA input or supplied from a separate 12 30 VDC voltage source Max power consumptio...

Page 20: ...able according to the specifications in the following before connecting pHix Compact pHix Compact with 2 x 4 20 mA outputs one for pH or redox measurement and one for temperature measurement Nr Design...

Page 21: ...sting cable except that it should be shielded and that the voltage drop should not be too big Note pHix Compact is a passive transmitter Considerations should be taken regarding the voltage drop over...

Page 22: ...pHix Compact EN 4 10 Version 2007 Mounting Connection examples 22 MJK connection box item no 200590 Connection examples Local display...

Page 23: ...pHix Compact EN 4 10 Version 2007 Mounting Connection examples 23 Connection to PLC_PLS...

Page 24: ...of 4 and 7 acidic range or pH values of 7 and 10 alcalic range For measurements around pH 7 neutral both buffers can be used The sequence of different pH buffer solutions is not important pHix Compact...

Page 25: ...th pH and redox calibration The pH value of the buffer liquid is dependent of the temperature and the stated pH value is valid at 77 F 25 C Buffer liquid has a limited lifetime Buffer liquid for pH 4...

Page 26: ...The switch ring has four positions and must only be set to one of these positions in order to obtain correct function Positio n Function M Measurement The switch ring should always be in this positio...

Page 27: ...pH 7 10 pH Example of buffer adjustment in pH 4 and 7 With the switch ring in position M flush the electrode tip in water Carefully wipe of the electrode tip with a cloth Never use materials that can...

Page 28: ...he tilt switch Remember to clean the electrode as described earlier 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 C...

Page 29: ...will automatically be set to the right value The LED will give one short flash every 5 seconds for indication of a successful calibration pHix Compact is now ready to be put into service or for anoth...

Page 30: ...r liquid or electrode should be replaced and pHix Compact turned upside down for at least 30 seconds before a new buffer adjustment is made Depending on the zero point value of the electrode and the p...

Page 31: ...e changed to two weeks and after that one month The intervals are equally reduced if the electrodes are very dirty and the measurements are significantly changed after buffer adjustment There are no g...

Page 32: ...ated lifetime The lifetime is based on 77 F 25 C but if the temperature is doubled the lifetime is halved pH electrodes in purifying plants for ordinary household waste water lasts approximately one y...

Page 33: ...NOT AVAILABLE IN THE US 163040 Redox buffer 6x20ml 180 mV Pt Kalomel 220mV PT Ag AgCL NOT AVAILABLE IN THE US Note For further accessories see pHix Compact Datasheet which can be downloaded from our...

Page 34: ...1000 1000 mV Input impedance Measuring input 1012 ohm Reference input 106 ohm Output 0 14 pH 4 20 mA Furthermore for variants with temperature output 32 122 F 0 50 C 4 20mA Temperature comp 4 176 F 2...

Page 35: ...pHix Compact EN 4 10 Version 2007 Dimensions 35 Dimensions Measurements are in mm inches US ONLY ALL OTHERS...

Page 36: ...oltage max load 12 V DC I 3 85 mA Electrode error Exchange the electrode I 3 90 mA Calibration not possible Exchange the electrode I 3 95 mA pH lower than measuring range Readjust the measuring range...

Page 37: ...to 1000 mV 4 20 mA ALL OTHERS pH and temperature transmitter item no 203110 Measuring range 0 14 pH 4 20 mA 0 point 4 6 pH pH transmitter item no 203112 Measuring range 0 14 pH 4 20 mA 0 point 4 6 pH...

Page 38: ...e environment and we help people use water efficiently in their homes buildings factories and farms In more than 150 countries we have strong long standing relationships with customers who know us for...

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