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PST MICHELL Instruments Easidew PRO XP User Manual

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Easidew PRO XP
Moisture Transmitter
User Manual
97442 Issue 6.6
June 2023

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Summary of Contents for PST MICHELL Instruments Easidew PRO XP

  • Page 1 Easidew PRO XP Moisture Transmitter User Manual 97442 Issue 6.6 June 2023...
  • 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 Invoice Date Installation Location Tag Number...
  • Page 3 Easidew PRO XP For Michell Instruments' contact information please go to www.michell.com © 2023 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

    Easidew PRO XP User Manual Contents Safety ..........................vii Toxic Materials ......................vii Repair and Maintenance ....................vii Calibration ........................vii Safety Conformity .......................vii Abbreviations ........................viii INTRODUCTION ....................1 Features ......................1 INSTALLATION ....................2 Unpacking the Instrument ................... 2 2.1.1 Wall Mounting ....................3 2.1.2 Pipe Mounting ....................
  • Page 5 Easidew PRO XP User Manual Figures Figure 1 Sensor Cap Removal ...................2 Figure 2 Dimensions Easidew PRO XP EX1 (Non-Display) - Wall Mounting ....3 Figure 3 Dimensions Easidew PRO XP EX2 (Display) – Wall Mounting ......4 Figure 4 Transmitter Mounting - Pipe or Duct.............5 Figure 5 Dimensions Easidew PRO XP EX1 (Non-Display) - Pipe or Duct .....5 Figure 6...
  • Page 6 Easidew PRO XP User Manual Appendices Appendix A Technical Specifications ................26 Appendix B Hazardous Area Certification ..............28 ATEX/UKCA ................. 28 IECEx ..................28 North American (cQPSus) ............. 28 Special Conditions................ 29 Maintenance and Installation ............29 Appendix C Fully Programmable Loop Powered 4-Digit LED Display Meter ....... 31 Display Meter Parameter Limits .............

  • Page 7: Safety

    Easidew PRO XP User Manual Safety The manufacturer has designed this equipment to be safe when operated using the procedures detailed in this manual. The user must not use this equipment for any other purpose than that stated. Do not apply values greater than the maximum value stated. This manual contains operating and safety instructions, which must be followed to ensure the safe operation and to maintain the equipment in a safe condition.

  • Page 8: Abbreviations

    Easidew PRO XP User Manual Abbreviations The following abbreviations are used in this manual: ampere across flats barg pressure unit (=100 kP or 0.987 atm) gauge °C degrees Celsius °F degrees Fahrenheit dew point direct current European Union feet per second HDPE high-density polyethylene inches...

  • Page 9: Introduction

    Easidew PRO XP User Manual INTRODUCTION INTRODUCTION The Easidew PRO XP has been manufactured, tested and calibrated to the highest available standards and should arrive in perfect working order, ready for installation into a gas or liquid measurement application. For questions about the instrument or how to install and operate it, contact your local representative.

  • Page 10: Installation

    Easidew PRO XP User Manual INSTALLATION INSTALLATION Any leak/pressure test must be conducted using cylinder nitrogen (>=99.995% purity) regulated to the required pressure (not exceeding the maximum operating pressure of the sensor/system). Hydrostatic testing using water or any liquid is not permitted. Unpacking the Instrument On delivery, please check that all the following standard components are present in the packing box:...

  • Page 11: Wall Mounting

    Easidew PRO XP User Manual INSTALLATION 2.1.1 Wall Mounting The instrument is housed in an aluminum or stainless steel Exd enclosure suitable for wall or panel mounting. Two mounting points are available with ø7mm (ø0.3”) clearance holes on fixing centers 127mm (5”) apart. Use 2 off max 6.5mm (0.25”) diameter mounting fasteners with a minimum length of 35mm (1.4”).

  • Page 12: Figure 3 Dimensions Easidew Pro Xp Ex2 (Display) - Wall Mounting

    Easidew PRO XP User Manual INSTALLATION Figure 3 Dimensions Easidew PRO XP EX2 (Display) – Wall Mounting 97442 Issue 6.6, June 2023...

  • Page 13: Pipe Mounting

    Easidew PRO XP User Manual INSTALLATION 2.1.2 Pipe Mounting The Easidew PRO XP can be supplied with a pipe mounting bracket as an optional accessory, which allows the transmitter to be installed onto pipework up to 51mm (2”) diameter. Figure 4 Transmitter Mounting - Pipe or Duct Figure 5 Dimensions Easidew PRO XP EX1 (Non-Display) - Pipe or Duct...

  • Page 14: Gas Media Process Connection

    Easidew PRO XP User Manual INSTALLATION Gas Media Process Connection The Easidew PRO XP transmitter can be mounted in any orientation for the following: • inserted into a pipe or duct • inserted into a flow-through sample block (optional). It can be operated up to 45 MPa (450 barg/6500 psig) when fitted correctly. If the installation is NOT into a Michell sample block please take note of the following to ensure correct installation is undertaken.

  • Page 15: Liquid Media Process Connection

    Easidew PRO XP User Manual INSTALLATION Rotate the enclosure to the desired position (up to 360° available) and tighten the large clamping nut (32mm 1¼”) to 10Nm (7.4 lbf-ft) to ensure dowty seal is correctly compressed for environmental protection (see Appendix B.1).

  • Page 16: Sample Block (Optional)

    Easidew PRO XP User Manual INSTALLATION 2.3.1 Sample Block (Optional) The following procedure must be carried out by a qualified engineer to ensure the safe operation of the pressure system. Remove the green protective cap and desiccant capsule. Ensure the O-ring (see Figure 8) is located correctly within the O-ring groove of the process connection and there is no contamination or debris on its exposed surfaces.

  • Page 17: Orientating The Display

    Easidew PRO XP User Manual INSTALLATION 2.3.2 Orientating the display The display can be oriented at 90, 180, 270 or 360º intervals to the process connection. The procedure to change the orientation of the display is as follows: • Unscrew the lid from the enclosure •...

  • Page 18: Hazardous Area Safety

    Easidew PRO XP User Manual INSTALLATION Hazardous Area Safety Appendix B of this manual refers to the Hazardous Area Certification of this product. This product is fitted with a marking label that contains Hazardous Area information pertinent to the suitable location and installation. During all installation and operation activities local regulations and permitted working routines must be observed.
  • Page 19 Easidew PRO XP User Manual INSTALLATION WARNING: This product is Certified safe for use in a Zone 1 & 21, and Zone 2 & 22 and Class I, Zone 1 and Class I, Division 1 area only. This product must not be installed or used within a Zone 0 area. WARNING: This product must not be operated within an explosive atmosphere greater than 1.1 bar absolute (16 psia).

  • Page 20: Electrical Safety

    Easidew PRO XP User Manual INSTALLATION Electrical Safety WARNING: During the installation of this product ensure that all applicable national and local electrical safety regulations are observed. WARNING: Isolate the power prior to installation. WARNING: Always ensure that power is switched off prior to accessing the product for any purpose other than normal operation or prior to disconnecting any cables.
  • Page 21 Easidew PRO XP User Manual INSTALLATION The protective Earth terminal is mounted externally and the Earth wire connected to it should never be disconnected. The product enclosure is supplied with a 5mm (0.2”) diameter external Earth connection at the lower right hand side. At installation, connect this Earth connection to plant Earth by a minimum 4mm (0.16 ”)

  • Page 22: Pressure Safety

    Easidew PRO XP User Manual INSTALLATION Pressure Safety WARNING: This product is used in conjunction with pressurized gases. Observe pressurized gas handling precautions. WARNING: Pressurized gas is dangerous. Pressurized gas should only handled by suitably trained personnel. The Easidew PRO XP requires pressurized gas to be connected to it. Observe pressurized gas handling regulations and only suitable trained personnel should carry out task that include the use of pressurized gas mediums.

  • Page 23: Electrical Schematic

    Easidew PRO XP User Manual INSTALLATION Electrical Schematic 2.7.1 Easidew PRO XP EX1 (Non-Display) NOTE: To ensure compliance with EMC standards, ensure that the screen of the power supply/signal cable or the power supply/signal conduit is connected to ground. With the cable entry option, a conductive cable entry gland is recommended, allowing the transmitter housing to be earthed via the cable screen connection.

  • Page 24: Easidew Pro Xp Ex2 (Display)

    Easidew PRO XP User Manual INSTALLATION 2.7.2 Easidew PRO XP EX2 (Display) NOTE: To ensure compliance with EMC standards, ensure that the screen of the power supply/signal cable or the power supply/signal conduit is connected to ground. With the cable entry option, a conductive cable entry gland is recommended, allowing the transmitter housing to be earthed via the cable screen connection.

  • Page 25: Preparation Of The Sensor Cable

    Easidew PRO XP User Manual INSTALLATION Preparation of the Sensor Cable The sensor cable is not supplied with the Easidew PRO XP, but there are 2 off bootlace ferrules supplied. Maximum conductor size is 0.75mm² (0.03²”). Correct preparation of the cable conductors is essential to ensure a reliable connection to the sensor terminals.

  • Page 26: Terminal Block Connection - Easidew Pro Xp Ex2 (Display)

    Easidew PRO XP User Manual INSTALLATION Plug the terminal block back into the header. Re-fit the enclosure lid in a clockwise direction until it stops and secure in place by tightening the grub screw with a 1.5mm (0.06”) A/F Allen key. Grub screw Figure 16 Grub Screw...

  • Page 27: Figure 18 Grub Screw

    Easidew PRO XP User Manual OPERATION Plug the terminal block back into the underside of the display meter and place it back onto its posts. Align the display meter in relation to the housing, as required. Re-fit the enclosure lid in a clockwise direction until it stops and secure in place by tightening the grub screw with a 1.5mm (0.06”) A/F Allen key.

  • Page 28: Operation

    Easidew PRO XP User Manual OPERATION OPERATION Measurement and Configuration The Easidew PRO XP can be configured to provide an output of 4...20 mA (2-wire connection) for the following: Dew point -110...+20°C (-166...+68°Fdp) Moisture content in gas 0...3000 ppm (and equivalent mg/m , lbs/MMSCF) Moisture content in liquids 0...1000 ppm...

  • Page 29: Sampling Hints

    Easidew PRO XP User Manual OPERATION Sampling Hints Operation is very simple, assuming the following installation techniques are adhered to: Be Sure the Sample is Representative of the Gas Under Test: The sample point should be as close to the critical measurement point as possible. Also, never sample from the bottom of a pipe as entrained liquids may be drawn into the sensing element.

  • Page 30: Maintenance

    Easidew PRO XP User Manual MAINTENANCE MAINTENANCE The power to the enclosure must be turned off before any work is carried out in the measurement system enclosure. Observe de-energize durations. Gas line connections to the measurement system must be isolated and de-pressurized before any work commences. Calibration Routine maintenance of the Easidew PRO XP is confined to regular re-calibration by exposure of the transmitter to sample gases of known moisture content to ensure that...

  • Page 31: Display Replacement

    Easidew PRO XP User Manual MAINTENANCE Display Replacement Unscrew the locking screw on the enclosure cap with a 1.5mm A/F Allen key. Unscrew the cap, lift the display and mounting ring clear from the 2 off mounting pillars, and unplug the connector. Remove the 2 off small screws holding the display onto its mounting ring.

  • Page 32: O-Ring Replacement

    Easidew PRO XP User Manual MAINTENANCE O-Ring Replacement Do not touch the filter with bare hands Identify the O-ring to be removed, as shown below. BS116 (3/4” x 3/32”) viton, 75 shore Carefully slide tweezers, thin bladed screwdriver or a blunt needle under the outer edge of the O-ring.
  • Page 33 Easidew PRO XP User Manual APPENDIX A Appendix A Technical Specifications Michell Instruments...

  • Page 34: Appendix A Technical Specifications

    Easidew PRO XP User Manual APPENDIX A Appendix A Technical Specifications Performance Specifications Easidew PRO XP for Gases Easidew PRO XP LQ for Liquids -110...+20 °C dew point (-166...+68 °F); -100...+20 °C 0...1000 ppm capability – factory configured to Measurement range (-148...+68 °F) dew point customer-required range and application Accuracy...
  • Page 35 Easidew PRO XP User Manual APPENDIX B Appendix B Hazardous Area Certification Michell Instruments...

  • Page 36: Hazardous Area Certification

    Easidew PRO XP User Manual APPENDIX B Appendix B Hazardous Area Certification The Easidew PRO XP is certified compliant to the ATEX Directive (2014/34/EU), the IECEx scheme and SI 2016 No. 1107 UKCA product marking scheme for use within Zone 1 &...

  • Page 37: Special Conditions

    Easidew PRO XP User Manual APPENDIX B Stainless Steel Enclosure Certification: Class I, Division 1, Groups ABCD T6 Class II, Division 1, Groups EFG Class III, Division 1 Tamb -20 °C...+70 °C Standards: ISA/ANSI 60079-0:2013 / CSA C22.2 No. 60079-0:19 ISA/ANSI 60079-1:2009 (R2013) / CSA C22.2 No.
  • Page 38 Easidew PRO XP User Manual APPENDIX C Appendix C Fully Programmable Loop Powered 4-Digit LED Display Meter 97442 Issue 6.6, June 2023...

  • Page 39: Appendix C Fully Programmable Loop Powered 4-Digit Led Display Meter

    Easidew PRO XP User Manual APPENDIX C Appendix C Fully Programmable Loop Powered 4-Digit LED Display Meter In order to re-configure the display meter, the enclosure lid should be removed by unscrewing it in an anti-clockwise direction. Care should be taken when unscrewing and replacing the enclosure lid as the threads form an important part of the Ex compliance regulations and therefore must not be damaged.

  • Page 40: Re-Configuration Steps

    Easidew PRO XP User Manual APPENDIX C Re-Configuration Steps The loop-powered display can display 4 characters, a decimal point and a sign. The zero and span settings represent the total number of characters used on the display, and the decimal point setting determines the location of the decimal point on the display.
  • Page 41 Easidew PRO XP User Manual APPENDIX C Displayed Text Description Setting high limit SPAN (setup of the high limit) Press button Press buttons to change the value between -1999 and 9999 (the value chosen will be displayed at input current of 20 mA-point high) Press button.

  • Page 42: Moisture Scaling Label

    Easidew PRO XP User Manual APPENDIX C Moisture Scaling Label The Easidew PRO XP has 3 standard ranges and scales which are as follows: EA-XP-TX -110 to +20°Cdp output range -100 to +20°Cdp output range EA-XP-LQ-TX 0-1000ppm The EA-XP-TX units will be configured for the range/scale ordered (as above) and will constantly display the measured value.

  • Page 43: Technical Specifications - Ex2 Led Display

    Easidew PRO XP User Manual APPENDIX C Technical Specifications - EX2 LED Display The display meter is simple in design and is a slave display to the measurement and configuration of the main transmitter pcb. It can be scaled linearly equating to the circulating 4...20 mA signal output from the main transmitter pcb.
  • Page 44 Easidew PRO XP User Manual APPENDIX D Appendix D Quality, Recycling & Warranty Information 97442 Issue 6.6, June 2023...

  • Page 45: Appendix D Quality, Recycling & Warranty Information

    Easidew PRO XP User Manual APPENDIX D Appendix D Quality, Recycling & 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 46 Easidew PRO XP User Manual APPENDIX E Appendix E Return Document & Decontamination Declaration 97442 Issue 6.6, June 2023...

  • Page 47: Appendix E Return Document & Decontamination Declaration

    APPENDIX E Easidew PRO XP User Manual Appendix E Return Document & Decontamination Declaration Decontamination Certificate IMPORTANT NOTE: Please complete this form prior to this instrument, or any components, leaving your site and being returned to us, or, where applicable, prior to any work being carried out by a Michell engineer at your site.
  • Page 48 www.ProcessSensing.com...

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