MDM50 HP Version User’s Manual
iv 97478 Issue 1.4, October 2019
1 INTRODUCTION ................................................................................................1
2 INSTALLATION ..................................................................................................2
3 OPERATION ......................................................................................................4
3.1 General Operation .............................................................................................. 4
3.2 Measuring Dew Points Below -40°C (-40°F) .......................................................... 5
3.3 User Controls ..................................................................................................... 6
3.4 4-20 mA Output Socket Wiring ............................................................................ 7
4 GOOD MEASUREMENT PRACTICE .......................................................................8
5 MAINTENANCE ................................................................................................12
5.1 Calibration ....................................................................................................... 12
5.2 Transmitter / Battery Replacement ..................................................................... 12
5.3 Filter Cartridge Replacement ............................................................................. 14
5.4 Checking the MDM50-HP Electronics Calibration .................................................. 14
5.5 List of Spares ................................................................................................... 14
5.6 Troubleshooting ................................................................................................ 15
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
Appendices
Appendix A Technical Specications ..............................................................................16
Appendix B Quality, Recycling & Warranty Information ...................................................18
Appendix C Decontamination Declaration ......................................................................20
Figures
Figure 1 Swagelok® Fitting Instructions .....................................................................3
Figure 2 User Controls .............................................................................................6
Figure 3 Jack Plug Wiring .........................................................................................7
Figure 4 Material Permeability Comparison ................................................................8
Figure 5 2-Wire Connection - View Showing Rear of Connector Terminal Block ...........13
