Appendix C Return Document & Decontamination Declaration ........................................20
Michell Instrumentsv
MDM300 Sampling System User’s Manual
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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 specifi ed 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. The safety instructions are either
warnings or cautions issued to protect the user and the equipment from injury or damage. Use
competent personnel using good engineering practice for all procedures in this manual.
Electrical Safety
The instrument is designed to be completely safe when used with options and accessories supplied
by the manufacturer for use with the instrument.
Pressure Safety
DO NOT permit pressures greater than the safe working pressure to be applied to the instrument.
The specifi ed safe working pressure will be as follows (refer to Appendix A - T echnical Specifi cations):
Low pressure: 20 barg (290 psig)
Medium pressure: 110 barg (1595 psig)
High pressure: 340 barg (4931 psig)
WARNING
The fl owmeter should never be pressurized.
Always expand a pressurized sample to atmospheric pressure
before it enters the fl ow meter.
Toxic Materials
The use of hazardous materials in the construction of this instrument has been minimized. During
normal operation it is not possible for the user to come into contact with any hazardous substance
which might be employed in the construction of the instrument. Care should, however, be exercised
during maintenance and the disposal of certain parts.
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
Calibration
The recommended calibration interval for the MDM300 Hygrometer is 12 months. The instrument
should be returned to the manufacturer, Michell Instruments, or one of their accredited service
agents for recalibration.
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 cation.
vi97232 Issue 1.4, October 2016
MDM300 Sampling System User’s Manual
!
Abbreviations
The following abbreviations are used in this manual:
AC alternating current
barg pressure unit (=100 kP or 0.987 atm) gauge
ºC degrees Celsius
ºF degrees Fahrenheit
Nl/min liters per minute
kg kilogram(s)
lb pound(s)
mm millimeters
“ inch(es)
psig pounds per square inch gauge
scfh standard cubic feet per hour
Warnings
The following general warning listed below is applicable to this instrument. It is repeated
in the text in the appropriate locations.
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.
Michell Instrumentsvii
MDM300 Sampling System User’s Manual
1 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 fl ight case which allows easy transport of everything
required to make the measurements. The anti-static construction of the case makes it
suitable for use in hazardous areas.
INTRODUCTION
Figure 1
Panel-Mount Sampling System and Flight Case
Michell Instruments1
INSTALLATION
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MDM300 Sampling System User’s Manual
2 INSTALLATION
2.1 Safety
It is essential that the installation of the electrical and
gas supplies to this instrument be undertaken by qualifi ed
2.2 Unpacking the Instrument
The shipping box will contain the following:
• MDM300 Panel-Mount Sampling System
• Flight case (optional)
personnel.
• 2.5mm Allen key
• 2 x 2.5mm hex bolts
• 2 x 1/8” NPT to 1/8” Swagelok
1. Open the box. If a fl ight case was ordered, the sampling system
will be packaged within it.
2. Remove the sampling panel (or fl ight case, if ordered) from the
box, along with the fi ttings.
3. Save all packing materials in case it is necessary to return the
instrument.
2.3 Environmental Requirements
Refer to the user’s manual for information on acceptable environmental conditions in
which to operate the MDM300.
®
adaptors
297232 Issue 1.4, October 2016
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