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Xylem mjk pHix Compact Manual

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EN 4.10  Version 2007
pHix® Compact
PH / REDOX TRANSMITTER

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Summary of Contents for Xylem 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 Your notes:...

  • Page 3: Table Of Contents

    pHix® Compact EN 4.10  Version 2007 Table of Contents Declaration of conformity ......................5 Introduction ..........................6 Measurements and standards used ..................6 Safety instructions........................6 Repair ..........................7 Explosion hazardous areas....................7 Construction ...........................7 Product identification......................7 Mounting ............................9 Electrode types ........................9 Mounting the electrode ......................9 Gasket and O-ring ......................
  • Page 4 pHix® Compact EN 4.10  Version 2007 Appendencies..........................36 Error codes .......................... 36 Standard transmitter configuration .................. 36 HART® commands......................37...

  • Page 5: Declaration Of Conformity

    pHix® Compact EN 4.10  Version 2007 Declaration of conformity Declaration of conformity / ...

  • Page 6: Introduction

    pHix® Compact EN 4.10  Version 2007 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 / IP 68 class enclosure.

  • Page 7: Repair

    pHix® Compact EN 4.10  Version 2007 Repair Repair must only made by MJK or by a service representative approved by MJK. Explosion hazardous areas Note! pHix® Compact must not be installed in explosion hazardous areas! Construction pHix® Compact is a loop powered 4-20 mA 2-wire transmitter with power supply and measuring signal transmitted over the same two wires.
  • Page 8 pHix® Compact EN 4.10  Version 2007 Item number Item description Serial number Electrode specification. An identical marking is found on the pH transmitter cable: Introduction / Product identification...

  • Page 9: Mounting

    pHix® Compact EN 4.10  Version 2007 Mounting Electrode types The electrode housing is marked with information about electrode type and measuring 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.

  • Page 10: Gasket And O-Ring

    pHix® Compact EN 4.10  Version 2007 therefore it must only be used together with the electrode with which it was delivered. Contact MJK if other electrode types should be used. Replacement of an electrode to another of the same type does not require reconfiguration. The electrode must not become dry.
  • Page 11 pHix® Compact EN 4.10  Version 2007 Check that the connectors are absolutely 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® Compact is completely dry –...

  • Page 12: Mechanical Mounting

    pHix® Compact EN 4.10  Version 2007 5. Finally, pHix® Compact must be buffer adjusted prior to  (see page 24) commissioning. Mechanical mounting Mechanical mounting in general pHix® Compact is made from Ryton (PPS) and/or stainless steel (EN 1.4404 / ASTM 316L), and because of this, it has a tremendous resistance against chemicals.
  • Page 13 pHix® Compact EN 4.10  Version 2007 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 WG / 1 bar or 10 mWG. Mounting / Mechanical mounting...

  • Page 14: Mounting In Open Channels And Reservoirs

    pHix® Compact EN 4.10  Version 2007 THE US ALL OTHERS pHix® Compact conforms to pressure class PN 5, and can therefore be mounted in closed systems with a working pressure of max. 72 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®...
  • Page 15 pHix® Compact EN 4.10  Version 2007 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 pHix® Compact directly into the pipe. Mounting / Mechanical mounting...

  • Page 16: Mounting In Closed Systems

    pHix® Compact EN 4.10  Version 2007 THE US ALL OTHERS 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.

  • Page 17: Mounting On Pipe Socket

    pHix® Compact EN 4.10  Version 2007 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. This can happen by means of an union (item no.
  • Page 18 pHix® Compact EN 4.10  Version 2007 Take care to have adequate room for mounting and removal 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 correct adaptation to the pipe system.

  • Page 19: Eletrical Mounting

    pHix® Compact EN 4.10  Version 2007 US ONLY ALL OTHERS pHix® Compact is mounted correctly when the electrode tip is emerged min. ½" in / 10 mm under the pipes inner pipe wall. Eletrical mounting Electrical mounting in general pHix® Compact must not be installed in explosion hazardous locations! pHix®...

  • Page 20: Cutting The Signal Cable

    pHix® Compact EN 4.10  Version 2007 Designation PUR cable > PUR cable > Signal 2017 color 2018 color 12-30 + V DC 1 black pH- or redox signal 4-20 - mA 2 black Black Output 1 Shield (not signal ground!) Note! pHix® Compact is delivered with cables made of PVC or PUR. Check the type of cable according to the specifications in the following before connecting pHix®...

  • Page 21: Extending The Signal Cable

    pHix® Compact EN 4.10  Version 2007 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.

  • Page 22: Connection Examples

    pHix® Compact EN 4.10  Version 2007 MJK connection box (item no. 200590). Connection examples Local display Mounting / Connection examples...

  • Page 23: Connection To Plc_Pls

    pHix® Compact EN 4.10  Version 2007 Connection to PLC_PLS Mounting / Connection examples...

  • Page 24: Buffer Adjustment

    pHix® Compact EN 4.10  Version 2007 Buffer adjustment Buffer adjustment in general In order to ensure a precise and stable pH measurement, pHix® Compact must be buffer adjusted with regular intervals. Buffer adjustment is a calibration, which is carried out in practice by dipping pHix® Compact in solutions (buffers) with known pH values.

  • Page 25: Buffer Liquid

    pHix® Compact EN 4.10  Version 2007 Buffer liquid Buffer liquid is delivered as ready-to-use solutions with the pH values 4, 7 and 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 buffer solutions as possible, i.e.

  • Page 26: Buffer Adjustment Using The Switch Ring

    pHix® Compact EN 4.10  Version 2007 Use only fresh buffer solutions! Dispose of any used buffer liquid. Observe that transmitter, electrode and buffer solution has the same temperature - preferably app. 77° F / 25° C. Buffer adjustment using the switch ring Remember to clean the electrode as described in the previous section! When the switch ring has been on for at least 10 minutes, it will only be possible to buffer adjust pHix®...

  • Page 27: Example Of Buffer Adjustment In Ph 4 And 7

    pHix® Compact EN 4.10  Version 2007 with the same value. When the value is found, pHix® Compact will automatically set the 0-point or span to the correct value, and the LED will indicate this with two short flashes every 5 seconds. pHix®...

  • Page 28: Buffer Adjustment Using The Tilt Switch

    pHix® Compact EN 4.10  Version 2007 In service (measurement). One Buffer adjustment in pH 4 buffer. flash every 5. second. Buffer adjustment in pH 7 buffer. Buffer adjustment in pH 10 buffer. Buffer adjustment using the 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.
  • Page 29 pHix® Compact EN 4.10  Version 2007 electrode upside-down. The buffer adjustment mode is initiated after app. 30 seconds - this is indicated by the LED with 3 short flashes every 5 seconds. If pHix® Compact is dipped into a buffer solution with a value of 4, 7 or 10 pH, pHix®...
  • Page 30 pHix® Compact EN 4.10  Version 2007 To start a new buffer adjustment, the buffer 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 preceding buffer values, the pHix®...

  • Page 31: Maintenance

    pHix® Compact EN 4.10  Version 2007 Maintenance Maintenance in general A pH or redox measuring system requires 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 buffer adjustments and cleaning depends widely on the working conditions.

  • Page 32: Cleaning Of The Electrode

    pHix® Compact EN 4.10  Version 2007 Cleaning of the electrode Use clean water for cleaning the electrode. A 10% hydrochloric acid solution can be used for cleaning if the electrodes are greasy. Protein coatings are removed with Pepsin cleaning fluid. Electrode lifetime The expected lifetime of the electrodes is dependent of the measurement. The lifetime is given with reservation as the physical conditions as well as the temperature, pressure and pollution of the fluid has great influence on the...

  • Page 33: Electrode Storage

    pHix® Compact EN 4.10  Version 2007 The following is recommended for cleaning and buffer adjustment: Item no. Description 163032 pH buffer, 0,25 liter pH 4 - NOT AVAILABLE IN THE US 163034 pH buffer, 0,25 liter pH 7 - NOT AVAILABLE IN THE US 163036 pH buffer, 0,25 liter pH 10 - NOT AVAILABLE IN THE US 163040...
  • Page 34 pHix® Compact EN 4.10  Version 2007 pHix® Compact Temperature range -4 … +176° F / -20 … +80° C  Housing material Housing exists in two variants: with Ryton (PPS) only with Ryton (PPS) and stainless steel (EN 1.4404 / ASTM 316L) combined. Enclosure NEMA 6X / IP 68, withstands submersion to 10 mWG...

  • Page 35: Dimensions

    pHix® Compact EN 4.10  Version 2007 Dimensions Measurements are in mm /inches. US ONLY ALL OTHERS  / Dimensions...
  • Page 36 pHix® Compact EN 4.10  Version 2007 Appendencies Error codes Symptom/mA signal Fault Remedy Constant current Electrical connection is Check connection and signal or 1 = 0 mA not made correctly make the necessary corrections Unsteady current Undervoltage Check the voltage at signal transmitter.
  • Page 37 pHix® Compact EN 4.10  Version 2007 • pH and temperature transmitter, item no. 203113 • Measuring range: 0-14 pH = 4-20 mA, 0-point = 4,6 pH • Temperature: 32-122° F = 4-20 mA • Redox transmitter, item no. 203121 • Measuring range: -1000 to +1000 mV = 4-20 mA ALL OTHERS: •...
  • Page 38 For more information on how Xylem can help you, go to www.xyleminc.com    MJK Automation ApS    Blokken 9  ...

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