Michell Instruments MDM50 User manual

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MDM50 HP Version User’s Manual
4
4
5
6
7
8
Contents
Appendices
Figures
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MDM50 HP Version User’s Manual
Safety
Electrical Safety
NOTE: No battery charger unit other than that supplied with the instrument should be
used.
NOTE: Do not allow the battery to fully discharge.
Pressure Safety
Toxic Materials
Repair and Maintenance
Calibration
Safety Conformity
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MDM50 HP Version User’s Manual
Abbreviations
Warnings
!
Where this hazard warning symbol appears in the following
sections, it is used to indicate areas where potentially hazardous
operations need to be carried out.
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MDM50 HP Version User’s Manual INTRODUCTION
1 INTRODUCTION
®
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MDM50 HP Version User’s Manual
4
OPERATION
3 OPERATION
!
Maximum operating pressure is 300 barg (4350 psig).
3.1 General Operation
®
!Before disconnecting the MDM50-HP from the gas line it
is essential to vent the system to atmospheric pressure,
otherwise severe injury could result.
NOTE: Filters are essential for potentially dirty/contaminated gases – the
required.
that give no restriction and are engraved with a number 1. Atmospheric or
line pressure measurement is achieved by changing the positioning of the
metering valve as per the General Operation instructions above.
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MDM50 HP Version User’s Manual
5
OPERATION
3.2 Measuring Dew Points Below -40°C (-40°F)
Target Dew Point T100 Response Time
(mins)
°C °F
5
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MDM50 HP Version User’s Manual
7
OPERATION
3.4
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MDM50 HP Version User’s Manual
8
GOOD MEASUREMENT PRACTICE
4 GOOD MEASUREMENT PRACTICE
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MDM50 HP Version User’s Manual
9
GOOD MEASUREMENT PRACTICE
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MDM50 HP Version User’s Manual
GOOD MEASUREMENT PRACTICE
•
•
•
•
•
•
System design for fastest response times
Filtration
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MDM50 HP Version User’s Manual MAINTENANCE
5 MAINTENANCE
5.1 Calibration
5.2 Transmitter / Battery Replacement
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MDM50 HP Version User’s Manual MAINTENANCE
•
5.3 Filter Cartridge Replacement
5.4
Supply
4-20 mA
PIN 3
PIN 1
(GND) Screen/Shield
Optional
5.5 List of Spares
P/N Description
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MDM50 HP Version User’s Manual
MAINTENANCE
5.6 Troubleshooting
Symptom Cause Actions
NOTE: This error is
normally displayed
seconds while the
instrument is starting
up.
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