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Xylem MJK pHix Compact Manual

Ph / redox transmitter
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MANUAL
EN 4.10 pHix® Compact 1904
pHix® Compact
PH- AND REDOXTRANSMITTER

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Summary of Contents for Xylem MJK pHix Compact

  • Page 1 MANUAL EN 4.10 pHix® Compact 1904 pHix® Compact PH- AND REDOXTRANSMITTER...
  • Page 2 MANUAL EN 4.10 pHix® Compact 1904 Your notes:...

  • Page 3: Table Of Contents

    MANUAL EN 4.10 pHix® Compact 1904 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 .................
  • Page 4 MANUAL EN 4.10 pHix® Compact 1904 Buffer adjustment using the tilt switch ........29 Maintenance ..............32 General ................. 32 Intervals ....................32 Redox electrodes ................32 Cleaning of the electrode ............33 Electrode lifetime ..............33 Electrode spare parts ............. 34 Electrode storage ..............

  • Page 5: Declaration Of Conformity

    MANUAL EN 4.10 pHix® Compact 1904 Declaration of conformity Konformitetserklæring Declaration of Conformity Konformitätserklärung Vi, MJK Automation A/S, We, MJK Automation A/S, Wir, MJK Automation A/S, DK-3460 Birkerød, påtager os DK-3460 Birkerød, declare DK-3460 Birkerød, erklären in det fulde ansvar for at under our sole responsibility alleiniger Verantwortung, dass produktet...

  • Page 6: Introduction

    MANUAL EN 4.10 pHix® Compact 1904 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.

  • Page 7: Repair

    MANUAL EN 4.10 pHix® Compact 1904 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 MANUAL EN 4.10 pHix® Compact 1904 1. Item number 2. Item description 3. Serial number 4. Electrode specification. An identical marking is found on the pH transmitter cable:...

  • Page 9: Mounting

    MANUAL EN 4.10 pHix® Compact 1904 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, 10 - 80° C, 0 = 4.6 pH. pH electrode, item no.

  • Page 10: Gasket And O-Ring

    MANUAL EN 4.10 pHix® Compact 1904 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. Therefore, do not remove the protective cap before before commissioning of pHix®...
  • Page 11 MANUAL EN 4.10 pHix® Compact 1904 1. Lubricate 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 –...

  • Page 12: Mechanical Mounting

    MANUAL EN 4.10 pHix® Compact 1904 Mechanical mounting 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. pHix® Compact can, without any further preparation, be used for measuring in solvents and strong alcalic or acid liquids.

  • Page 13: Open And Closed Systems

    MANUAL EN 4.10 pHix® Compact 1904 Open and closed systems pHix® Compact is designed for measuring in both open and closed systems. Open systems are, for example, gutters, wells, and reservoirs. Closed systems are, for example, pipe systems or tanks/vessels. pHix®...

  • Page 14: Mounting In Open Channels And Reservoirs

    MANUAL EN 4.10 pHix® Compact 1904 pHix® Compact conforms to pressure class PN 5, and can therefore be mounted in closed systems with a working pressure of max. 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 MANUAL EN 4.10 pHix® Compact 1904 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.
  • Page 16 MANUAL EN 4.10 pHix® Compact 1904 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).

  • Page 17: Mounting In Closed Systems

    MANUAL EN 4.10 pHix® Compact 1904 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°...

  • Page 18: Mounting On Pipe Socket

    MANUAL EN 4.10 pHix® Compact 1904 Mounting on pipe socket In order to ensure a tight seal and correct function of pHix® Compact, the following should be complied with: 1. The pipe socket must be flushed and free of burrs, etc. 2.
  • Page 19 MANUAL EN 4.10 pHix® Compact 1904 Max working pressure = 5 bar g. Max working temperature = 80° C. pHix® Compact is mounted correctly when the electrode tip is emerged min. 10 mm under the pipes inner pipe wall.

  • Page 20: Eletrical Mounting

    MANUAL EN 4.10 pHix® Compact 1904 Eletrical 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 supplied from a separate 12-30 VDC voltage source. Max power consumption is 50 mW. pHix®...

  • Page 21: Cutting The Signal Cable

    MANUAL EN 4.10 pHix® Compact 1904 pHix® Compact with 2 x 4-20 mA outputs, one for pH or redox measurement and one for temperature measurement. Designa- PUR cable > PUR cable > Signal tion 2017 color 2018 color 12-30 (+) V 1 black pH or redox signal...

  • Page 22: Extending The Signal Cable

    MANUAL EN 4.10 pHix® Compact 1904 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®...

  • Page 23: Connection Examples

    MANUAL EN 4.10 pHix® Compact 1904 Connection examples Local display Connection to PLC/PLS...

  • Page 24: Buffer Adjustment

    MANUAL EN 4.10 pHix® Compact 1904 Buffer adjustment 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®...

  • Page 25: Buffer Liquid

    MANUAL EN 4.10 pHix® Compact 1904 Buffer liquid 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 buffer solutions as possible, i.e.

  • Page 26: Cleaning

    MANUAL EN 4.10 pHix® Compact 1904 Cleaning Before starting buffer adjustment, wash the electrode in running water and wipe it with a cloth before immersing it in the buffer solution. Washing and wiping must be repeated between each step of the buffer adjustment. Use only fresh buffer solutions! Dispose of any used buffer liquid.
  • Page 27 MANUAL EN 4.10 pHix® Compact 1904 If pHix® Compact is being put into a buffer liquid with the same value as the switch ring is set to, pHix® Compact will automatically begin to scan for a buffer 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.

  • Page 28: Example Of Buffer Adjustment In Ph 4 And 7

    MANUAL EN 4.10 pHix® Compact 1904 Example of buffer adjustment in pH 4 and 7 1. 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 scratch the measuring lens.

  • Page 29: Buffer Adjustment Using The Tilt Switch

    MANUAL EN 4.10 pHix® Compact 1904 In service (measurement). One flash Buffer adjustment in pH 4 buffer. 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 30 MANUAL EN 4.10 pHix® Compact 1904 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 31 MANUAL EN 4.10 pHix® Compact 1904 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 32: Maintenance

    MANUAL EN 4.10 pHix® Compact 1904 Maintenance 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 33: Cleaning Of The Electrode

    MANUAL EN 4.10 pHix® Compact 1904 If the transmitter does not show the correct value when put into the buffer solution, the electrode must be exchanged. 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.

  • Page 34: Electrode Spare Parts

    MANUAL EN 4.10 pHix® Compact 1904 Electrode spare parts Item no. Description 160310 pHix® pH electrode, 0-point=4,6 pH 160311 pHix® pH electrode, 0-point=7,0 pH 160312 pHix® redox electrode 571030 Black rubber gasket for electrode 521409 Union ring w. Viton gasket for mounting of pHix® on pipe 521441 Viton gasket for union ring...

  • Page 35: Electrode Storage

    MANUAL EN 4.10 pHix® Compact 1904 The following is recommended for cleaning and buffer adjustment: Item no. Description 163032 pH buffer, 0,25 liter pH 4 163034 pH buffer, 0,25 liter pH 7 163036 pH buffer, 0,25 liter pH 10 163040 Redox buffer, 6x20ml +180 mV Pt/Kalomel/+220mV PT- Ag/AgCL Note! For further accessories, see data sheet 4.1:...

  • Page 36: Specifications

    MANUAL EN 4.10 pHix® Compact 1904 Specifications pHix® Compact Supply voltage 12-30 V DC Consumption App. 50mW Temperature –20 … +80° C range Housing material Housing exists in two variants: 1. with Ryton (PPS) only 2. with Ryton (PPS) and stainless steel (EN 1.4404 / ASTM 316L) combined.

  • Page 37: Dimensions

    MANUAL EN 4.10 pHix® Compact 1904 Dimensions Measurements are in mm.

  • Page 38: Appendencies

    MANUAL EN 4.10 pHix® Compact 1904 Appendencies Error codes Symptom/mA Fault Remedy signal Constant Electrical Check connection and make the necessary current signal connection is not corrections or 1 = 0 mA made correctly Unsteady Undervoltage Check the voltage at transmitter. Min. current signal voltage @ max.

  • Page 39: Hart® Commands

    MANUAL EN 4.10 pHix® Compact 1904 HART® commands ® All commands and settings can be read and set by means of HART ® commands. Ask for separate documentation regarding HART commands.
  • Page 40 150 countries, we have strong, long-standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise, backed by a legacy of innovation. For more information on how Xylem can help you, go to www.xyleminc.com MJK Automation A/S Blokken 9 DK-3460 Birkerød...

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