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Related Manuals for PST MICHELL Instruments MDM300
Summary of Contents for PST MICHELL Instruments MDM300
- Page 1 MDM300 Sampling System User Manual 97232 Issue 1.5 October 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. Instrument Code Serial Number Invoice Date Location of Instrument Tag No Instrument Code Serial Number Invoice Date Location of Instrument Tag No Instrument...
- Page 3 MDM300 Sampling System For Michell Instruments' contact information please go to www.ProcessSensing.com © 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 MDM300 Sampling System User Manual Contents Safety ..........................v Electrical Safety ......................v Pressure Safety ......................v Toxic Materials ......................v Repair and Maintenance ....................v Calibration ........................v Safety Conformity ......................v Abbreviations ........................vi Warnings ..........................vi INTRODUCTION ....................1 INSTALLATION ....................2 Safety .......................
- Page 5 MDM300 Sampling System User Manual Tables Table 1 Controls, Indicators and Connectors ..............5 Appendices Appendix A Technical Specifications ................13 Appendix B Quality, Recycling & Warranty Information ........... 15 Appendix C Return Document & Decontamination Declaration ........17 Michell Instruments...
- Page 6 MDM300 Sampling System 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 subject the equipment to conditions outside of the specified operating limits. 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 7 MDM300 Sampling System User Manual Abbreviations The following abbreviations are used in this manual: alternating current barg pressure unit (=100 kP or 0.987 atm) gauge ºC degrees Celsius ºF degrees Fahrenheit Nl/min liters per minute kilogram(s) pound(s) millimeters “ inch(es) psig pounds per square inch gauge scfh...
- Page 8 MDM300 Sampling System User Manual INTRODUCTION INTRODUCTION The MDM300 panel-mount sampling system offers a complete package for conditioning of a sample, prior to measurement with an MDM300 or MDM300 I.S. It is contained within an optional flight case which allows easy transport of everything required to make the measurements.
- Page 9 MDM300 Sampling System User Manual INSTALLATION INSTALLATION Safety It is essential that the installation of the electrical and gas supplies to this instrument be undertaken by qualified personnel. Unpacking the Instrument The shipping box will contain the following: • MDM300 Panel-Mount Sampling System •...
- Page 10 MDM300 Sampling System User Manual INSTALLATION Preparing the Sampling System for Operation To prepare the system for operation, it is necessary to install the MDM300 into the sampling system as follows: Wrap PTFE tape (not supplied), around the ends of the 1/8” NPT to 1/8” Swagelok tube fittings and install into the orifice adaptors fitted to the ®...
- Page 11 MDM300 Sampling System User Manual INSTALLATION NEEDLE VALVE (NV2) Connect the coiled tubes to the inlet and outlet of the MDM300. Ensure that the 1/8” Swagelok nuts are finger tight. ® lbf/in FLOWMETER (FM1) OPTIMAL FLOW 0.2 - 0.5 L/MIN NEEDLE VALVE (NV1) MDM300 I.S.
- Page 12 MDM300 Sampling System User Manual INSTALLATION Controls, Indicators and Connectors MDM300 I.S. SAMPLE VENT Sampling System MDM300-IS SAMPLING SYSTEM PRESSURE GAUGE (PG1) NEEDLE VALVE (NV2) lbf/in FLOWMETER (FM1) OPTIMAL FLOW 0.2 - 0.5 L/MIN NEEDLE VALVE (NV1) BYPASS VENT - I.S. SAMPLE INLET MAX 100 BARG BYPASS VALVE...
- Page 13 MDM300 Sampling System User Manual OPERATION OPERATION MDM300 I.S. SAMPLE VENT Sampling System Sample Gas Connection MDM300-IS SAMPLING SYSTEM PRESSURE GAUGE (PG1) Gas is introduced to the system by connecting the sample take-off line to the GAS IN NEEDLE VALVE (NV2) port, as shown in Figure 8.
- Page 14 MDM300 Sampling System User Manual OPERATION Sampling Hints Measurement of moisture content is a complex subject, but does not need to be difficult. This section aims to explain the common mistakes made in measurement situations, the causes of the problem, and how to avoid them. Mistakes and bad practices can cause the measurement to vary from the expectation;...
- Page 15 MDM300 Sampling System User Manual OPERATION Sample Tubing Length The sample point should always be as close to the critical measurement point as possible, in order to obtain a truly representative measurement. The length of the sample line to the sensor or instrument should be as short as possible. Interconnection points and valves trap moisture, so using the simplest sampling arrangement possible will reduce the time it takes for the sample system to dry out when purged with dry gas.
- Page 16 MDM300 Sampling System User Manual OPERATION Flow Rates Theoretically flow rate has no direct effect on the measured moisture content, but in practice it can have unanticipated effects on response speed and accuracy. The optimal flow rate varies depending on the measurement technology. MDM300 I.S.
- Page 17 MDM300 Sampling System User Manual MAINTENANCE MAINTENANCE General Maintenance Guidelines Routine maintenance of the system is confined to filter element replacement and regular recalibration of the MDM300 or MDM300 I.S. sensor. For specific details on replacing filter elements, please see Section 4.2. In most applications, annual recalibration ensures that the stated accuracy of the MDM300 Advanced Dew-Point Hygrometer is maintained.
- Page 18 MDM300 Sampling System User Manual MAINTENANCE Unscrew and remove the filter bowl and then the filter element. NOTE: the filter bowl is sealed with an O-ring. Discard the old used filter element and replace with a new filter element MDM300 I.S. Order codes: SAMPLE VENT Sampling System...
- Page 19 MDM300 Sampling System User Manual APPENDIX A Appendix A Technical Specifications 97232 Issue 1.5, October 2024...
- Page 20 MDM300 Sampling System User Manual APPENDIX A Appendix A Technical Specifications Enclosure Dimensions 300 x 400 x 150mm (11.81 x 15.75 x 5.91”) (w x h x d) Materials ABS (anti-static) Ingress Protection IP67 / NEMA4 Sampling System Low pressure: 20 barg (290 psig) Pressure Range Medium pressure: 110 barg (1595 psig) High pressure: 340 barg (4931 psig)
- Page 21 MDM300 Sampling System User Manual APPENDIX B Appendix B Quality, Recycling & Warranty Information 97232 Issue 1.5, October 2024...
- Page 22 MDM300 Sampling System User Manual APPENDIX B Appendix B 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 23 MDM300 Sampling System User Manual APPENDIX B Appendix C Return Document & Decontamination Declaration 97232 Issue 1.5, October 2024...
- Page 24 MDM300 Sampling System User Manual APPENDIX C Appendix C 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 25 www.ProcessSensing.com...
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