Michell Instruments XPM601 User Manual
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Michell Instruments XPM601 User Manual

Paramagnetic oxygen analyzer
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XPM601
Paramagnetic Oxygen Analyzer
User Manual
97632 Issue 1
March 2024

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  • Page 1 XPM601 Paramagnetic Oxygen Analyzer User Manual 97632 Issue 1 March 2024...
  • Page 2 Please fill out the form(s) below for each instrument that has been purchased. Use this information when contacting Michell Instruments for service purposes. Product Name Order Code Serial Number Invoice Date Installation Location Tag Number Product Name Order Code Serial Number...
  • Page 3 © 2024 Michell Instruments This document is the property of Michell Instruments Ltd and may not be copied or otherwise reproduced, communicated in any way to third parties, nor stored in any Data Processing System without the express written authorization of Michell Instruments Ltd.

  • Page 4: Table Of Contents

    XPM601 User Manual Contents Safety ..........................vii Electrical Safety ......................vii Pressure Safety ......................vii Temperature Safety .....................vii Toxic Materials ......................vii Repair and Maintenance ....................vii Calibration ........................vii Safety Conformity .......................vii Equipment Ratings ......................vii Abbreviations ........................viii Warnings .......................... viii INTRODUCTION ....................1 Features ......................2 Applications .......................
  • Page 5 1-Point Calibration Page ................25 Figure 26 2-Point Calibration Page ................26 Figure 27 Field Calibration Reset Page ..............27 Figure 28 XPM601 Cutaway Showing Major Components ..........30 Figure 29 XPM601 Lid Removal ................31 Figure 30 XPM601 Cable Entries ................32 Figure 31 Terminal Block Locations ................33 Figure 32 XPM601 Dimensional Drawings ..............39...
  • Page 6 XPM601 User Manual Appendices Appendix A Technical Specifications ................37 Dimensions Ex version ..............39 Appendix B Modbus Register Map ................41 Appendix C Hazardous Area Certification ..............47 ATEX/UKCA ................47 IECEx ..................47 North American (cQPSus) ............47 Special Conditions............... 48 Maintenance and Installation ............

  • Page 7: Safety

    Repair and Maintenance The instrument must be maintained either by the manufacturer or an accredited service agent. For the contact details for Michell Instruments’ offices worldwide, go to www.ProcessSensing.com. Calibration The recommended calibration interval for the analyzer is 3 months. Depending on the application in which the instrument is used, the calibration interval may be reduced.

  • Page 8: Abbreviations

    XPM601 User Manual Abbreviations The following abbreviations are used in this manual: Ampere alternating current bara pressure in bar (absolute) barg pressure in bar (gauge) °C degrees Celsius °F degrees Fahrenheit direct current kilogram Kilopascal pound Liquid Crystal Display maximum...

  • Page 9: Introduction

    XPM601 User Manual INTRODUCTION INTRODUCTION This manual will show how to measure oxygen easily using the XPM601 Paramagnetic Oxygen Analyzer. The following sections contain information about: • Analyzer components • Operating instructions • Calibration and maintenance of the Analyzer •...

  • Page 10: Features

    The XPM601 is calibrated to achieve maximum performance in electrolyzer generation applications. • The XPM601 provides 2 off 4...20 mA analog output signals that are proportional to the oxygen concentration. The primary 4...20 mA output is fixed the same as the calibrated range of the instrument. The secondary output is user-selectable within the calibrated range.

  • Page 11: Applications

    XPM601 User Manual INTRODUCTION Applications The XPM601 uses a highly sensitive and stable paramagnetic sensor that has been factory calibrated to achieve maximum performance in electrolyzer generation applications. Together with a purpose-designed sampling system, the XPM601 is able to work under various process and environmental conditions.

  • Page 12: Operation

    XPM601 User Manual OPERATION OPERATION The XPM601 analyzer is not certified for use with ambient oxygen levels that are enriched (i.e. over 21 % O This analyzer has been manufactured within our quality procedures and is configured according to the purchase order. When it is installed and used as per the manufacturer’s guidelines, it will operate within the stated specification.

  • Page 13: Powering Up The Analyzer

    This will allow the analyzer to reach its operating temperature. There is no power switch on the XPM601 Paramagnetic Oxygen Analyzer. It is operational once a 24 V DC power source is applied. After the analyzer is powered up, the display will be illuminated.

  • Page 14: User Interface

    XPM601 User Manual OPERATION User Interface 2.3.1 Interface Controls The user interface consists of a backlit liquid crystal display and four touch-sensitive pads that facilitate user interaction through the glass of the enclosure. All versions have application software to monitor or adjust parameters. Application software will require a PC or laptop with comm port connection.

  • Page 15: Esc' Button

    XPM601 User Manual OPERATION 2.3.2 ‘ESC’ Button Figure 4 ESC Button button is used to exit the current menu and to return to the previous menu. From the Main Page, pressing will access the Info Page. 2.3.3 ‘Up/Down Arrow’ Buttons...

  • Page 16: Menu Structure

    XPM601 User Manual OPERATION Menu Structure The XPM601 has a front page that does not require a passcode but allows the user to scroll through and view oxygen concentration, recent trend, internal parameters, minimum & maximum oxygen concentration and alarm history.

  • Page 17: Menu Map

    XPM601 User Manual OPERATION 2.4.2 Menu Map Figure 7 Menu Map Front Pages (No passcode required) The user has the ability to toggle between 5 different home screens without the need for a passcode. NOTE: These are for display of information only and there is no way of adjusting any settings on these pages.

  • Page 18: Front Page

    XPM601 User Manual OPERATION 2.5.1 Front Page Figure 8 Front Page Parameter Description Background Gas Background Gas Displays the background gas that the unit was calibrated in Real oxygen reading in % Display resolution = 0.01 (if HSR=OFF) (Display resolution 0.1 % when min value is >=20 %)

  • Page 19: Chart Page

    XPM601 User Manual OPERATION 2.5.2 Chart Page Figure 9 Chart Page NOTE: This data is not available via the Modbus • This indicative chart is continuously running at the set chart interval (2...60 seconds). • Chart duration in seconds = (chart interval * 60).

  • Page 20: Secondary Parameters Page

    XPM601 User Manual OPERATION 2.5.3 Secondary Parameters Page Figure 10 Secondary Parameters Page Parameter Description Sensor cell temperature display in set unit (°C, °F or Kelvin) CELL T CELL T Display Resolution = 0.1 Temperature display of Microcontroller in selected temperature unit...

  • Page 21: Alarms Log Pages

    XPM601 User Manual OPERATION 2.5.5 Alarms Log Pages Figure 12 Alarms Log Page A maximum of 40 High/Low alarms, along with date and time of occurrence, are recorded in a ring buffer in NV memory. The most recent alarm will overwrite the oldest alarm when more than 40 alarms are recorded.

  • Page 22: Main Menu (Passcode Required)

    XPM601 User Manual OPERATION Main Menu (Passcode Required) In order to change any settings on the User Menu pages, the user must enter a passcode. There is also a separate passcode for service engineers to allow factory setting changes. To access the User Menu, press the...

  • Page 23: Settings Page

    XPM601 User Manual OPERATION 2.7.1 Settings Page Figure 15 Settings Page Select the parameter required. The options will be highlighted and can be toggled between by pressing the ENTER ENTER button. These are all ON/OFF ON/OFF except for Modbus ID which, if only one analyzer is connected to your system, should be set to ‘...

  • Page 24: Human Machine Interface (Hmi) Page

    XPM601 User Manual OPERATION 2.7.2 Human Machine Interface (HMI) Page Figure 16 HMI Page It is possible to change parameters within the HMI, as shown below: Setting Description/Operation Options CONTRAST CONTRAST LCD contrast setting 0-100 % 0-100 % in 10 % steps...

  • Page 25: Reset Page

    XPM601 User Manual OPERATION 2.7.3 Reset Page Figure 18 Reset Page Min/Max and Alarm Logs can be cleared from this menu. See Sections 2.5.4 and 2.5.5 respectively for more information. This menu can also be used to restore the original calibration settings. For more information, see Section 3.3.

  • Page 26: Alarms Page

    XPM601 User Manual OPERATION 2.7.4 Alarms Page Figure 19 Alarms Page The analyzer has 2 user-configurable alarms which are freely assignable within the calibrated range. The alarm relays are Single Pole Change-Over (SPCO) and are rated to 250 V, 5 A maximum. Both alarms can be set as high, low or off.

  • Page 27: External Compensation Page

    XPM601 User Manual OPERATION 2.7.5 External Compensation Page Figure 20 External Compensation Page A 4...20 mA sensor may be used to compensate the % O reading for the effects of process variables such as line pressure, flow, etc. The table of compensation factors may be edited for 5 points along the compensation sensor range.

  • Page 28: External Sensor Page

    This page sets up the type and range of the 4...20 mA external sensor signal that may be connected to the XPM601 for viewing in the Main Page. The range is adjustable between the MIN and MAX values but is not adjustable for...

  • Page 29: Outputs Page

    XPM601 User Manual OPERATION 2.7.7 Outputs Page Figure 22 OUTPUTS Page The analyzer has two 4...20 mA outputs and two concentration alarm relays. The primary 4...20 mA is fixed to the calibrated range of the unit, the second is freely selectable from 0 to 100 %.

  • Page 30: Field Cal Page

    XPM601 User Manual OPERATION 2.7.8 Field Cal Page Figure 24 Field Cal Page Setting Description/Operation 1 POINT or 2 POINT CAL TYPE CAL TYPE REF GAS 1 REF GAS 1 Cal reference gas for 1 point cal, lower cal reference gas for 2 point cal...

  • Page 31: Calibration

    Field Calibration: Like all process analyzers, the XPM601 will require periodic calibration. The frequency entirely depends on the location, application and accuracy requirements of the user. The typical calibration period is expected to be between 1 and 3 months; however, it is recommended to calibrate the unit at least every 6 months.
  • Page 32 The oxygen content of the nitrogen surrogate gas should fall within the normal oxygen measurement range of the XPM601. For nitrogen surrogate gases that are different to those on the calibration certificate, a linear fit between the certificate data points should be used when calculating a suitable offset.

  • Page 33: 1-Point Calibration

    XPM601 User Manual CALIBRATION 1-Point Calibration This is a single-point offset overlaid on top of the factory calibration. It is designed to correct minor drift and minor changes during transit. This calibration makes the unit very accurate at the calibration point and improves accuracy throughout the range.

  • Page 34: 2-Point Calibration

    XPM601 User Manual CALIBRATION 2-Point Calibration This is a 2-point adjustment that is overlaid on top of the factory calibration. It is designed to correct minor drift and minor changes during transit. This calibration makes the unit more accurate throughout the range than the single point calibration.

  • Page 35: Field Calibration Reset

    XPM601 User Manual INSTALLATION The Adjusted reading will now be the same as that displayed on the Main Page and be equal to the upper calibration gas. The calibration process is complete. Return to sampling the process gas. NOTE: The analyzers leave the factory with the field calibration function turned off.

  • Page 36: Installation

    INSTALLATION Before installing the analyzer, read through this manual carefully and take note of all warnings. The XPM601 must only be installed by suitably qualified personnel and in accordance with the instructions provided and the terms of the applicable product certificates.

  • Page 37: Unpacking

    INSTALLATION Unpacking If sold separately (not part of a sampling system), the XPM601 will be supplied in a custom box which should be retained for future use (such as service return). The box contains a small carton containing 2 lid keys and 1 hex key (for the grub screw). Any cable glands supplied will also be in the smaller carton.

  • Page 38: System Components

    INSTALLATION XPM601 User Manual System Components The XPM601 Paramagnetic Oxygen Analyzer benefits from a modular construction, with the major parts of the analyzer shown below: Figure 28 XPM601 Cutaway Showing Major Components Lid with display and touch screen Instrument case...

  • Page 39: Set-Up

    Set-Up • The XPM601 is designed to be panel or wall mounted. There are 2 bolt holes and 2 lugs (1 per corner) – see Figure 30. Dimensional drawings can be found in Appendix A.1. Mount the analyzer before attempting to remove the lid.

  • Page 40: Mechanical Installation

    The 1/8" NPT female gas connections are on the bottom surface towards the front of the unit. The gas inlet is the left-hand connection when viewing the unit from the front. Unsintered PFTE tape is available as an accessory from Michell Instruments (PTFE- TAPE-02).

  • Page 41: Calibration Gases

    4.5.1 Power Supply and Input/Output Signal The XPM601 requires 24 V DC power input at a maximum start-up current of 1.5 A. All versions will use a braid screened multi-core cable. Ideally, one cable for signals (PL4, PL5) and another cable for power (PL9) / relay contacts (PL1). Braid of cables must be well terminated at the cable glands.

  • Page 42: Signal Output

    INSTALLATION XPM601 User Manual 4.5.3 Signal Output There are two 4...20mA linear signal output channels. Both are for oxygen concentration. One is fixed on the calibrated range of the unit and the second can be configured in the menu. NOTE: When the instrument is warming up (cell temperature not stabilized) these outputs are set to 3.2 mA (if set to NAMUR ERR LOW) or 21.4...

  • Page 43: Alarm Relay Contacts

    PIN 2 PIN 1 Exc.V Exc.V The XPM601 features 2 input channels for 4...20 mA signal from external instruments such as pressure transmitters or other devices to compensate for pressure or background gas influence. The input configured as EXT SENS...
  • Page 44 XPM601 User Manual APPENDIX A Appendix A Technical Specifications 97632 Issue 1, March 2024...

  • Page 45: Appendix A Technical Specifications

    XPM601 User Manual APPENDIX A Appendix A Technical Specifications Performance Measurement Technology Paramagnetic oxygen analyzer Non-condensing sample with particles <5 μm Measurement Range Up to 5 % O Display Resolution 0.01 % Display Type Backlit LCD Accuracy < ±0.1 % O Response Time (T90) <...
  • Page 46 Aluminum, copper free Hazardous Area Certification (see Appendix C) The XPM601 meets or exceeds all relevant clauses in BS EN 50104:2019 “Electrical apparatus for the detection and measurement of oxygen”. * This analyzer must have a constant sample temperature, pressure and flow rate to remain within its stated specification.

  • Page 47: Figure 32 Xpm601 Dimensional Drawings

    XPM601 User Manual APPENDIX A Dimensions 234 mm (9.21") 195 mm (7.68") 172 mm (0.35") 11.5 mm 172 mm (6.77") (0.45") (6.77") 15 mm (0.59") 12 mm 171 mm (0.47") (6.73") 15 mm (0.59") BREATHER (DO NOT OBSTRUCT) GAS OUT...
  • Page 48 APPENDIX B XPM601 User Manual Appendix B Modbus Register Map 97632 Issue 1, March 2024...

  • Page 49: Appendix B Modbus Register Map

    XPM601 User Manual APPENDIX B Appendix B Modbus Register Map Compatible with XPM601 Firmware Version: V1.0 Addr Function Access Ranges/Resolution Type Modbus Instrument Address (ID) 1...127 Settings Register 0...65535 0...100 % / 0...100 %, 10 % Display Contrast / Brightness...
  • Page 50 APPENDIX B XPM601 User Manual Addr Function Access Ranges/Resolution Type mA1 Input in % (comp signal) 0.0...100.0 % mA2 Input (ext sensor signal) See Reg Details Status Flags register 0...65535 Clock HOURS/MIN 00...23 / 00...59 Clock SEC/DAY 00...59 / 01...31 Clock MONTH/YEAR 01...12 / 00...99...
  • Page 51 XPM601 User Manual APPENDIX B Register Type D: Units Bits Meaning (binary) 0, 1 0003 00=°C, 01=°F, 10=K 2, 3 000C Ext press unit, 00 = psia, 01=bara, 10=kPa 0010 Field cal type, 0=1 gas (offset), 1=2 gas 0020 Date format 0=Non US, 1=US...
  • Page 52 APPENDIX B XPM601 User Manual Register Type I – Status/Error Meaning 0001 Displays HSR or depending on setting (system) 0002 out of range (beyond calibration range, e.g. 0...25 %) 0004 Low alarm ON 0008 High alarm ON Ext Comp i/p signal error 0010 (input <...
  • Page 53 XPM601 User Manual APPENDIX B Register Type K: -32767 to +32767 Range = 0...65535 represents values Conversion: (RegValue – 32767) Register Type L: Alarm/NAMUR Configuration Bits Meaning 1, 0 00 = Alarm1 is Inactive (off) 01 = Alarm1 is a Low Alarm...
  • Page 54 APPENDIX C XPM601 User Manual Appendix C Hazardous Area Certification 97632 Issue 1, March 2024...

  • Page 55: Hazardous Area Certification

    Body 2776) and EUROFINS CML UK (Approved Body 2503). The XPM601 is certified compliant to the applicable North American Standards (USA and Canada) for use within Class I & II, Division 1 and Class I, Zone 1 & Zone 21 Hazardous Locations and has been assessed as being so by QPS Evaluation Services Inc.

  • Page 56: Special Conditions

    Maintenance and Installation The XPM601 must only be installed by suitably qualified personnel and in accordance with the instructions provided and the terms of the applicable product certificates. Maintenance and servicing of the product must only be carried out by suitably trained personnel or returned to an approved Michell Instruments Service Center.
  • Page 57 XPM601 User Manual APPENDIX D Appendix D Quality, Recycling, Compliance & Warranty Information Michell Instruments...

  • Page 58: Appendix D Quality, Recycling, Compliance & Warranty Information

    XPM601 User Manual Appendix D Quality, Recycling, Compliance & Warranty Information Michell Instruments is dedicated to complying to all relevant legislation and directives. Full information can be found on our website at: www.ProcessSensing.com/en-us/compliance This page contains information on the following directives: •...
  • Page 59 APPENDIX E XPM601 User Manual Appendix E Analyzer Return Document & Decontamination Declaration Michell Instruments...

  • Page 60: Appendix E Analyzer Return Document & Decontamination Declaration

    Has the equipment been cleaned and decontaminated? NOT NECESSARY Michell Instruments will not accept instruments that have been exposed to toxins, radio-activity or bio-hazardous materials. For most applications involving solvents, acidic, basic, flammable or toxic gases a simple purge with dry gas (dew point <-30°C) over 24 hours should be sufficient to decontaminate the unit prior to return.
  • Page 61 XPM601 User Manual NOTES Michell Instruments...
  • Page 62 www.ProcessSensing.com...

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