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MDM300 I.S. User’s Manual

97213 Issue 5, October 2017

INTRODUCTION

Two versions of the instrument are available, an MDM300 (standard) version and an

MDM300 I.S. (intrinsically safe) version.

This manual covers the MDM300 I.S. version only.

For information about the MDM300 contact your local Michell Instruments’ representative

(contact information at www.michell.com).

- I.S.

Figure 1

MDM300 I.S. Advanced Dew-Point Hygrometer

(for use in hazardous areas)

Содержание MDM300 I.S

Страница 1: ...MDM300 I S Advanced Dew Point Hygrometer User s Manual I S 97213 Issue 5 October 2017...

Страница 2: ...nformation when contacting Michell Instruments for service purposes Hygrometer Code Serial Number Invoice Date Location of Instrument Tag No Hygrometer Code Serial Number Invoice Date Location of Inst...

Страница 3: ...rwise reproduced communicated in any way to third parties nor stored in any Data Processing System without the express written authorization of Michell Instruments Ltd I S MDM300 I S Advanced Dew Poin...

Страница 4: ...rements 12 2 4 1 Environmental Requirements MDM300 I S Instrument 12 2 4 2 Charger Electrical Requirements 12 2 5 Instrument Gas Connections 12 2 5 1 Gas Inlet Outlet Fittings 13 2 6 Connect External...

Страница 5: ...ility 43 6 2 Calibration Method 44 6 3 Calibration Correction Method 45 7 SHIPPING 46 Appendices Appendix A Technical Specifications 48 A 1 Dimensions 49 Appendix B Datalog Status Display 51 Appendix...

Страница 6: ...FO Page 29 Figure 23 CHART Page 29 Figure 24 LOG FILES Page 30 Figure 25 LOGS Page 30 Figure 26 CALIBRATION Page 31 Figure 27 Easi Fit Sample Kit MDM300 Panel Mount Sampling System 33 Figure 28 Large...

Страница 7: ...o other battery charger unit other than that supplied with the instrument should be used NOTE Do not allow the battery to fully discharge Pressure Safety DO NOT permit pressures greater than the safe...

Страница 8: ...eter s mA milliampere Mb megabytes max maximum min minute s mm millimeter s MPa megapascal No number PIN personal identification number ppmV parts per million by volume ppmW parts per million by weigh...

Страница 9: ...p 103 Fdp The MDM300 I S can also be used to read the dew point signal from a Michell Instruments Easidew I S transmitter To do this the MDM300 I S Remote Sensor Interface is used to connect to the Ea...

Страница 10: ...00 standard version and an MDM300 I S intrinsically safe version This manual covers the MDM300 I S version only For information about the MDM300 contact your local Michell Instruments representative c...

Страница 11: ...panel of the instrument Connections to the MDM300 I S dew point hygrometer comprising the gas ports battery charger input connector and input connector for the external sensor are all made to the top...

Страница 12: ...tput port Refer to Section 2 5 5 Top Gas Input port Refer to Section 2 5 6 Top Analog input connector for external sensor By default this signal is displayed in the secondary display area but may be c...

Страница 13: ...of alpha numeric values these keys are used to change the values Pressing the key once increases or decreases the selected field by one step Pressing and holding the key will cause the selected field...

Страница 14: ...warning beep sounds when the battery charge level is critical followed immediately by Shutdown Mode NOTE The icon becomes animated when the charger is connected 3 Keyboard beep indicator Indicates th...

Страница 15: ...can display the measured reading in the following units Absolute Humidity lb MMscf g m3 g m3 NG Moisture Content ppmV NG ppmV ppmW AIR USER H2 SF6 CO2 or N2 Dew Point C F K Relative Humidity Mixing R...

Страница 16: ...ary Once the message has disappeared this indicates that the instrument has finished its accelerated approach to the actual dew point Depending on the conditions it may continue to respond for a numbe...

Страница 17: ...ct o b e r 0 8 0 0 0 0 0 Is su e 1 O ct o b e r 0 8 M D M 3 0 0 I S A d v a n c e d D e w P o i n t H y g r o m e t e r U s e r s M a n u a l I S 9 7 2 1 3 Is su e 4 S e p te m b e r 2 0 1 2 1 2 3 4 I...

Страница 18: ...ion Software CD 7 Quick start card 8 Carrying case made from anti static materials suitable for use in hazardous areas optional Three gas port adaptors are provided two with a large bore orifice and o...

Страница 19: ...play will read Initializing internal sensor Turn the instrument on The status display will read Initializing internal sensor Turn the instrument on The status display will read Initializing internal s...

Страница 20: ...nections are made via the Gas In 2 and Gas Out 1 ports located on the rear of the instrument as shown in Figure 5 The MDM300 I S is supplied with a large bore orifice fitting installed into the Gas In...

Страница 21: ...ure bonded seals are correctly seated in recessed grooves PTFE tape here 1 8 Swagelok fitting Adaptor Bonded seal h h h h Figure 7 Bonded Seal Fitting 2 Fit any other adaptors that might be required 3...

Страница 22: ...OTE SENSOR INTERFACE Connect to Easidew I S Sensor Connect to MDM300 I S Connect to EASIDEW I S SYSTEM Figure 9 MDM300 I S Remote Sensor Interface Refer to Appendix C Hazardous Area Certification for...

Страница 23: ...of the external sensor After completion of the above settings return to the Main Display The instrument will now display dew point from the external sensor in the secondary display area and the selec...

Страница 24: ...nt settings the battery will provide approximately 24 hours of continuous operation when fully charged A graphical display of battery charge state is provided and an audible warning is given as the ba...

Страница 25: ...Instruments service department for advice Once the charger has finished the fast charge stage it can be safely disconnected Switch off the AC power supply remove the charger unit and close the instrum...

Страница 26: ...ration it is recommended that the user becomes familiar with Section 1 of this manual in which the equipment controls and indicators and the elements of the display are described Prior to making a mea...

Страница 27: ...sor temperature is indicated in the secondary display area The initializing icon item 6 in Figure 3 is displayed in the status area and the keyboard is locked out until the initialization period has e...

Страница 28: ...available SETTINGS LOGGING BLUETOOTH EXTERNAL CLOCK HMI CALIBRATION and INFO For more detailed information on these options refer to Section 3 4 These options are selected by means of the and keys Pre...

Страница 29: ...L SPAN USER PRESSURE YEAR MONTH DAY HOUR MIN CONTRAST BRIGHTNESS KEY TONE BL TIMEOUT LANGUAGE PRIMARY DISP POINT REF MDM300 INFO PAGE LOGGING BLUETOOTH EXTERNAL CLOCK HMI CALIBRATION INFO Chart Page o...

Страница 30: ...tmospheric or Pressure DP TEMP UNIT Sets system temperature units Available Input C K F PRESSURE UNIT Sets system pressure units Available Input psig MPa psia bara KPa barg GAS TYPE Defines the sample...

Страница 31: ...e Input DEWP GM3 GKG RH PPMW PPMV CALC DP GM3 NG LBMMSCF PPMV NG LOG INTERVAL Sets log interval in 5 sec increments Available Input Range 5 to 600 seconds START Starts the log cycle after logging para...

Страница 32: ...to the PC s desktop from where they can be loaded into other programs e g Microsoft Excel for further examination and processing ENABLE NO NAME MDM300 BLUETOOTH Figure 17 BLUETOOTH Page Parameter Des...

Страница 33: ...s follows 1 From the PC s Bluetooth menu search for devices in range This yields the instrument named i e MDM300 2 Double click the instrument icon and enter the instrument s pairing passcode 7316 for...

Страница 34: ...e of Easidew I S transmitter NOTE The ZERO and SPAN limits are automatically added for this transmitter Available Input NONE EASIDEW EXTERNAL ZERO Defines external zero lower limit The ZERO default li...

Страница 35: ...Figure 20 CLOCK Page Parameter Description YEAR Current year Available Input Range 00 to 99 MONTH Current month Available Input Range 01 to 12 DAY Current day Available Input Range 01 to 31 HOUR Curr...

Страница 36: ...R PRIMARY DISP Sets the display option NOTE This option is only accessible if an external sensor has been configured see below Available Input INTERN EXTERN Table 9 HMI Parameters If no external input...

Страница 37: ...parameters a graphical display of the output can be obtained by pressing the key from the Main Display The chart can be reset at any time by pressing the Enter key Reset the chart by pressing the key...

Страница 38: ...to a PC In the FILES Page a shortcut to the LOGGING Set Up Menu is provided by pressing the Enter key Refer to Section 3 4 2 for logging set up details 3 4 10 LOGS Page If the instrument is logging p...

Страница 39: ...the chart may not necessarily reflect what is being logged 3 4 11 CALIBRATION WARNING These procedures require the use of specialized test equipment and calibration adjustments should only be carried...

Страница 40: ...2 Figure 16 FILE NAME PARAMETER DEWP LOG INTERVAL 5 sec START STOPPED BLUETOOTH Section 3 4 3 Figure 17 ENABLE NO NAME MDM300 I S EXTERNAL Section 3 4 4 Figure 19 EXTERNAL TYPE NONE EXTERNAL ZERO N A...

Страница 41: ...tor or bystander is possible For the most basic measurement it is recommended to have a flow meter 0 to 1 l min and at least one metering valve A number of sampling kits are available from Michell Ins...

Страница 42: ...trument Figure 28 Large and Small Orifice Fitting With one metering valve Ensure that large orifice fittings are fitted to both the inlet and the outlet of the instrument To measure at atmospheric pre...

Страница 43: ...ample gas stream 2 Adjust the flow rate using the inlet flow control valve to between 0 2 0 5 Nl min 0 5 1 scfh The outlet flow control valve should be fully open 3 Turn the instrument on the initiali...

Страница 44: ...the measured dew point C Enhanced Purge 1 Connect the MDM300 I S to the sample gas stream 2 Adjust the flow rate using the inlet flow control valve to between 0 2 0 5 Nl min 0 5 1 scfh The outlet flow...

Страница 45: ...plete discharge Complete discharge may occur if the unit is not connected to a battery charger within a 24 hour period see below WARNING If complete discharge does occur then difficulties may be encou...

Страница 46: ...rates which the sensor requires Excessive flow restriction can cause back pressure across the sensor leading to a discrepancy between the readings recorded and those expected Note Dew point is dramat...

Страница 47: ...tructure particularly organic materials natural or synthetic salts or anything which contains them and anything which has small pores It is important to ensure that the materials used are suitable for...

Страница 48: ...nditioning Sample conditioning is often necessary to avoid exposure of sensitive measuring components to liquids and other contaminants which may cause damage or affect the accuracy over time dependin...

Страница 49: ...the sample can flow from the exhaust back into the system A longer exhaust sometimes called a pigtail can also help alleviate this problem Slow the response of the sensor to changes in moisture conten...

Страница 50: ...tware has been installed and run the MDM300 I S can be linked to the PC by activating the Bluetooth on the MDM300 I S and then connecting with the application software see Section 3 4 3 for details Th...

Страница 51: ...in an accredited e g UKAS or NIST U S standards laboratory If these facilities do not exist it is recommended that the instrument be returned to the manufacturer Michell Instruments Ltd or one of the...

Страница 52: ...re made from stainless steel and are of suitable quality 5 Connect the MDM300 I S to a dew point generator and establish a gas flow through the instrument 6 Apply a dew point of 100 C and allow the in...

Страница 53: ...lues in the first column POINT represent the thirteen nominal calibration points spread at 10 C intervals over the instruments operating range of 100 to 20 C 148 to 68 F These points cannot be edited...

Страница 54: ...in its original carton 1 as shown below NOTE It is not necessary to return any accessories unless they require repair replacement Any returned accessories can be packed in the box 4 4 Create a packin...

Страница 55: ...MDM300 I S User s Manual Michell Instruments 47 APPENDIX A Appendix A Technical Specifications...

Страница 56: ...5 Nl min 0 5 to 1 scfh Electrical Specifications Auxiliary Inputs Connection to Michell Easidew I S or Easidew PRO I S via Remote Sensor Interface Battery 4 8 V internally mounted Nickel Metal Hydrid...

Страница 57: ...Languages English German Spanish French Italian Portuguese Hazardous Area Certification Certification Codes ATEX II 1G Ex ia IIC T4 Ga 20 C to 50 C IECEx Ex ia IIC T4 Ga 20 C to 50 C INMETRO Ex ia IIC...

Страница 58: ...MDM300 I S User s Manual 50 97213 Issue 5 October 2017 APPENDIX B Appendix B Datalog Status Display...

Страница 59: ...the least significant bit The four most significant bits 13 to 16 are for Michell Instruments service use and so the first character in any MDM300 I S ST display will always read 0 Status register bit...

Страница 60: ...ssible 0x0020 BIT 6 Measurement in progress Internal dew point not stable 0x0040 BIT 7 Internal dew point changing 0 2 Cdp over a 3 minute interval 0x0080 BIT 8 Log finished Log file has reached the m...

Страница 61: ...MDM300 I S User s Manual Michell Instruments 53 APPENDIX C Appendix C Hazardous Area Certification...

Страница 62: ...26 2007 IEC60079 0 2007 10 EN60079 11 2007 IEC60079 26 2006 CAN CSA C22 2 No 0 M10 FM CLASS 3600 1998 CAN CSA C22 2 No 157 92 R2012 FM CLASS 3610 2010 CAN CSA C22 2 No 142 M1987 R2009 FM CLASS 3810 2...

Страница 63: ...he MDM300 I S 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...

Страница 64: ...MDM300 I S User s Manual 56 97213 Issue 5 October 2017 APPENDIX D Appendix D FCC Declaration...

Страница 65: ...cause harmful interference to radio reception which may be determined by turning the product on off the user is encouraged to try to correct the interference by one or more of the following measures...

Страница 66: ...MDM300 I S User s Manual 58 97213 Issue 5 October 2017 APPENDIX E Appendix E Quality Recycling Warranty Information...

Страница 67: ...ctives Full information can be found on our website at www michell com compliance This page contains information on the following directives ATEX Directive Calibration Facilities Conflict Minerals FCC...

Страница 68: ...MDM300 I S User s Manual 60 97213 Issue 5 October 2017 APPENDIX F Appendix F Return Document Decontamination Declaration...

Страница 69: ...icals YES NO Radioactive substances YES NO Other hazards YES NO Please provide details of any hazardous materials used with this equipment as indicated above use continuation sheet if necessary Your m...

Страница 70: ...MDM300 I S User s Manual 62 97213 Issue 5 October 2017 NOTES...

Страница 71: ......

Страница 72: ...http www michell com...

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