Michell Instruments MDM300 I.S, User Manual

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MDM300 I.S. User’s Manual
Michell Instruments 13
INSTALLATION
2.5.1 Gas Inlet /Outlet Fittings
!
HIGH PRESSURE! High pressure gases are potentially
hazardous. Energy stored in these gases can be released
suddenly and with extreme force. High pressure systems
should be assembled and operated only by people who have
been trained in proper safety practices.
Before making a measurement, the gas fittings should be attached to the instrument as
shown in Table 3 .
1. Fit the required orifice fittings with supplied bonded seals. Ensure 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. If the small bore orifice fitting is not being utilized then one of the optional
application kits could be fitted (as shown below ).
I.S
.
Figure 8
Gas Coupling Examples for Atmospheric Pressure Measurement
NOTE: The application kit shown above (excluding the orifice fittings) is not
supplied as standard, but is part of a range of kits which can be ordered from
Michell Instruments, on request.
NOTE: The bonded seals used for the MDM300 I.S. are Dowty part number
400-228-4490-74 (from Michell Instruments, part number MDM300-DS).