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Michell Instruments Easidew PRO User Manual

Intrinsically safe field display, ppmv
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Intrinsically Safe Field Display
User's Manual
ppm
V
Easidew PRO I.S. Field Display
E
P
97321 Issue 2.3
May 2016

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Summary of Contents for Michell Instruments Easidew PRO

  • Page 1 Intrinsically Safe Field Display User’s Manual Easidew PRO I.S. Field Display 97321 Issue 2.3 May 2016...
  • Page 2 Please fi ll out the form(s) below for each instrument that has been purchased. Use this information when contacting Michell Instruments for service purposes. Instrument Code Serial Number Invoice Date Location of Instrument Tag No Instrument Code Serial Number Invoice Date...
  • Page 3 © 2016 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

    I.S. Field Display User’s Manual Contents Safety ..........................vi Toxic Materials ......................vi Repair and Maintenance ....................vi Safety Conformity ......................vi Abbreviations ........................vi Warnings ..........................vi INTRODUCTION ....................1 Operation ......................1 1.1.1 Controls ....................... 2 INSTALLATION ....................3 4-20 mA Input ....................3 System Design for Gas Hazardous Areas ............. 4 2.2.1 Transmitter Loops ..................
  • Page 5 Figures Figure 1 Indicator Block Diagram ................2 Figure 2 Loop-Powered by a Galvanic Isolator (Easidew PRO I.S.) .......4 Figure 3 Loop-Powered by a Galvanic Isolator (Easidew TX I.S.) .........4 Figure 4 Alternative Circuits for Remote Indication in a Hazardous Area ......5 Figure 5 Installation Procedure .................6...

  • Page 6: Safety

    Repair and Maintenance The instrument must be maintained either by the manufacturer or an accredited service agent. Refer to www.michell.com for details of Michell Instruments’ worldwide offi ces contact information. Safety Conformity This product meets the essential protection requirements of the relevant EU directives. Further details of applied standards may be found in the product specifi...

  • Page 7: Introduction

    After fi ve seconds the instrument displays the input current using the calibration information stored in the instrument memory. If the loop current is too low to power the instrument it will display the error message LPLo Michell Instruments...

  • Page 8: Controls

    I.S. Field Display User’s Manual INTRODUCTION Less than 1.2 V 88888 Analog 4-20 mA to digital input Power converter Supply alarm 1 Common Optional Optional Loop powered Alarms Backlight alarm 2 Separately powered Indicator Block Diagram Figure 1 1.1.1 Controls The I.S.

  • Page 9: Installation

    1 & 3 will not exceed those specifi ed by clause 5.7 of EN 60079-11 for simple apparatus. This simplifi es the application and documentation of intrinsically safe loops containing the I.S. Field Display. Michell Instruments...

  • Page 10: System Design For Gas Hazardous Areas

    5 V if the backlight is loop-powered. See Section 3.4.1. Figures 2 and 3 illustrate typical applications in which an I.S. Field Display is connected with an Easidew PRO I.S. and an Easidew TX I.S. transmitter powered by a galvanic isolator.

  • Page 11: Remote Indication

    9999 driven via an intrinsically safe interface from a 4-20 mA safe area signal. The type Easidew PRO I.S. Field Display of intrinsically safe interface is not critical. Either a Zener barrier or a galvanic isolator may be used, providing that the Ui, li and Pi of the I.S.

  • Page 12: Location

    / cable entries. Installation Procedure Figure 5 illustrates the instrument installation procedure. Easidew PRO I.S. Field Display Remove the instrument terminal cover by unscrewing the two captive 'A' screws. Mount the instrument on a fl at surface and secure with screws or bolts through the two 'B' holes.

  • Page 13: Emc

    I.S. Field Display User’s Manual INSTALLATION Two M6 clearance 141mm holes for surface (5.5”) mounting 9999 Easidew PRO I.S. Field Display 72mm (2.8”) 117mm (4.6”) Separate Control terminal cover compartment Three M20 x 1.5 tapped cable entries. 91mm The FM approved version (3.6”)

  • Page 14: Operation

    I.S. Field Display User’s Manual OPERATION OPERATION The I.S. Field Display will be supplied already confi gured to order and only requires installation in the user's equipment. If it is necessary to re-range, change the resolution or set the alarms (if fi tted), see the sections below: Confi...

  • Page 15: Summary Of Confi Guration Functions

    See Section 3.1.5. Calibration of display using internal references Enables the zero and span of the I.S. Field Display to be adjusted without the need for an accurate input current or disconnection from the 4-20 mA loop. See Section 3.1.6. Michell Instruments...

  • Page 16: Figure 7 Confi Guration Menu

    I.S. Field Display User’s Manual OPERATION Figure 7 Confi guration Menu 97321 Issue 2.3, May 2016...

  • Page 17: Indicator Function: 'Func

    Confi guration FunC Menu and press . If the function is set as required, press to return to the Confi guration   Menu, or press to change the setting, followed by to return to the Confi guration Menu. Michell Instruments...

  • Page 18: Std ' Linear (Default)

    I.S. Field Display User’s Manual OPERATION 3.1.2.1 ‘ ’ Linear (Default) Provides a linear relationship between the 4-20 mA input current and the I.S. Field Display. 3.1.3 Resolution: ' rESn This function defi nes the resolution of the least signifi cant display digit. Decreasing the display resolution can improve the readability of a noisy signal.

  • Page 19: Re-Range Display Or Calibrate Using An External Current Source: ' Cal

    I.S. Field Display displays and aborts the calibration. FaiL • If the zero current is greater than the span current the instrument will be reverse acting, i.e. an increasing input current will cause the display to decrease. Michell Instruments...

  • Page 20: Re-Range Display Or Calibrate Using Internal Reference: ' Set

    I.S. Field Display User’s Manual OPERATION 3.1.6 Re-Range Display or Calibrate Using Internal Reference: ‘ ’ Using the function the I.S. Field Display can be calibrated without the need to know the value of the 4-20 mA input current, or to disconnect the instrument from the 4-20 mA loop.

  • Page 21: Tare Function: ' Tare

    Confi guration Menu. The revised security CodE code will be activated when the I.S. Field Display is returned to the display mode. Please contact Michell Instruments (see contact details at www.michell.com) if the security code is lost. 3.1.10 Reset to Factory Defaults: ‘...

  • Page 22: 3.1.11 Under And Over-Range

    I.S. Field Display User’s Manual OPERATION 3.1.11 Under and Over-Range If the numerical display range of the I.S. Field Display is exceeded, all the decimal points will fl ash as shown below: Under range -9.9.9.9 Over range 9.9.9.9 Although not guaranteed, most indicators will continue to function normally with an input current between 1.8 mA and 4 mA.

  • Page 23: Alarms (Optional)

    Alarm Alarm setpoint setpoint Output Output Output Output ALARM Open Closed Closed Open 4-20 mA Input 4-20 mA Input Alarm Outputs Figure 8 Confi gurable functions for each alarm include adjustable setpoint, hysteresis, alarm delay and alarm accept. Michell Instruments...

  • Page 24: Solid State Output

    Figure 10 . Safe Area Hazardous Area 9999 Easidew PRO I.S. Field Display 3 4 8 9 10 11 2 1 4-20 mA supply 4-20 mA...

  • Page 25: Confi Guration And Adjustment

     Press 5 times until is shown. Alr1 Press again. Summary of alarm confi guration functions: Display Description of function Alarm enable EnbL Enables or disables the alarm without changing the alarm parameters. See Section 3.3.4. Michell Instruments...

  • Page 26: Alarm Enable: ' Enbl

    I.S. Field Display User’s Manual OPERATION Alarm setpoint 1 Adjusts the alarm setpoint. The alarm is activated when the display equals the setpoint. See Section 3.3.5. Alarm function Hi.Lo Defi nes the alarm function as High or Low. See Section 3.3.6. Normally open or normally closed output no.nC Sets the alarm output open or closed in the non-alarm condition.

  • Page 27: Alarm Function: ' Hi.lo

    For example, a Field Display calibrated to display 0 to 10000, with a high alarm set at 9000 and hysteresis of 200 will perform as follows: The high alarm will be activated when increasing display equals 9000, but will not reset until the display falls below 8800. Michell Instruments...

  • Page 28: Alarm Delay: ' Dela

    I.S. Field Display User’s Manual OPERATION 3.3.9 Alarm Delay: ' dELA This function delays activation of the alarm output for an adjustable time following the alarm condition occurring. The delay can be set in 1 second increments between 0 and 3600 seconds.

  • Page 29: Flash Display When Alarm Occurs: ' Flsh

    0000  in the display mode by pressing simultaneously. Unless otherwise requested, new instruments with alarms are supplied with this function disabled and the security code set to 0000 Michell Instruments...

  • Page 30: 3.3.13 Adjusting Alarm Setpoints From The Display Mode

    I.S. Field Display User’s Manual OPERATION 3.3.13 Adjusting Alarm Setpoints from the Display Mode NOTE: With the I.S. Field Display in the display mode, direct access to the ACSP alarm setpoints is only available when the menu is enabled, see Section 3.3.12.

  • Page 31: Display Backlight (Optional)

    4-20 mA input as shown in Figure 13, which increases the maximum Field Display voltage drop from 1.2 to 5 V. Hazardous Area Safe Area 9999 Easidew PRO I.S. Field Display Zener barrier or 3 4 6 5 Galvanic Isolator 4-20 mA...

  • Page 32: Separately Powering The Backlight

    The optional backlight may also be powered from a separate safe area power supply via an intrinsically safe interface, as shown in Figure 14 . Hazardous Area Safe Area 9999 Easidew PRO I.S. Field Display Zener barriers or Galvanic Isolators +24 V 3 4 6 5...

  • Page 33: Pipe-Mounting Kits

    Pass the hose clips around the pipe to which the instrument is to be mounted, re-engage both clips and tighten after turning the mounting plate into the required position. Fix the instrument to the mounting plate using four locally sourced 4mm x 12mm long, self-tapping screws. Michell Instruments...

  • Page 34: Maintenance

    fi tted. A single spare instrument may quickly be recalibrated to replace any instrument that is damaged or fails. No attempt should be made to repair instruments at component level. It is recommended that faulty instruments are returned to Michell Instruments or to a local Michell Instrument's agent for repair. Routine Maintenance The mechanical condition of the instrument and electrical calibration should be regularly checked.
  • Page 35 I.S. Field Display User’s Manual APPENDIX A Appendix A Hazardous Area Certifi cation Michell Instruments...

  • Page 36: Appendix A Hazardous Area Certifi Cation

    APPENDIX A I.S. Field Display User’s Manual Appendix A Hazardous Area Certifi cation ATEX Certifi cation The I.S. Field Display is available with ATEX Gas & Dust Certifi cation. Dust certifi cation is an option which must be specifi ed when the I.S. Field Display is ordered. Hazardous Area Certifi...

  • Page 37: Global Certifi Cates/Approvals

    Maintenance and servicing of the product must only be carried out by suitably trained personnel or returned to an approved Michell Instruments’ Service Center. Michell Instruments...
  • Page 38 I.S. Field Display User’s Manual APPENDIX A 97321 Issue 2.3, May 2016...
  • Page 39 I.S. Field Display User’s Manual APPENDIX A Michell Instruments...
  • Page 40 I.S. Field Display User’s Manual APPENDIX A 97321 Issue 2.3, May 2016...
  • Page 41 I.S. Field Display User’s Manual APPENDIX A Michell Instruments...
  • Page 42 I.S. Field Display User’s Manual APPENDIX A 97321 Issue 2.3, May 2016...
  • Page 43 I.S. Field Display User’s Manual APPENDIX A Michell Instruments...
  • Page 44 I.S. Field Display User’s Manual APPENDIX A 97321 Issue 2.3, May 2016...
  • Page 45 I.S. Field Display User’s Manual APPENDIX A Michell Instruments...
  • Page 46 I.S. Field Display User’s Manual APPENDIX A 97321 Issue 2.3, May 2016...
  • Page 47 I.S. Field Display User’s Manual APPENDIX A Michell Instruments...
  • Page 48 I.S. Field Display User’s Manual APPENDIX B Appendix B EC Declaration of Conformity 97321 Issue 2.3, May 2016...

  • Page 49: Appendix Bec Declaration Of Conformity

    I.S. Field Display User’s Manual APPENDIX B Appendix B EC Declaration of Conformity Michell Instruments...
  • Page 50 I.S. Field Display User’s Manual APPENDIX C Appendix C Quality, Recycling & Warranty Information 97321 Issue 2.3, May 2016...

  • Page 51: Appendix C Quality, Recycling & Warranty Information

    The directives’ aim is to reduce the impact that electronic devices have on the environment. Michell Instruments is in full compliance with the WEEE Directive and is registered with an approved recycler (Registration No. WEE/JB0235YW) and treats the requirement of the directive and the protection of the environment with the utmost importance.

  • Page 52: Rohs2 Compliance

    Equipment product sold into the EU market place as 22nd July 2017. However, the careful design policy of all Michell Instruments’ products continues to attain compliance in the shortest practical timescales and strives to ensure that less than 0.1% of total mass per product, of all non-compliant materials, appear within them.

  • Page 53: Reach Compliance

    Our continued review of the SVHC Candidate List and latest additions is to ensure we remain compliant. Michell Instruments maintains a hazardous material register in which MSDS data sheets are collated, and we will check that our suppliers will comply to REACH requirements for all materials and substances we use in the processes of our manufacturing.

  • Page 54: Return Policy

    I.S. Field Display User’s Manual APPENDIX C Return Policy If a Michell Instruments’ product malfunctions within the warranty period, the following procedure must be completed: Notify a Michell Instruments’ distributor, giving full details of the problem, the model variant and the serial number of the product.
  • Page 55 I.S. Field Display User’s Manual APPENDIX D Appendix D Return Document & Decontamination Declaration Michell Instruments...

  • Page 56: Appendix D 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 Work will not be carried out on any unit that does not have a completed decontamination declaration.
  • Page 57 I.S. Field Display User’s Manual NOTES: Michell Instruments...
  • Page 58 http://www.michell.com...

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