Michell Instruments XTP601, User Manual

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XTP601 User’s Manual
30 97313 Issue 5, May 2018
INSTALLATION
4.4 Mechanical Installation
There are 3 cable entries on the bottom surface, towards the rear, that can be utilized
by the customer in a variety of manners. The following standard options are available:
Cable Gland, Conduit Entry, Blanking Plug or Light Guide.
Gas
Connections
Cable
Entries
Earthing
Point
g
g
g
IN OUT
Figure 30 XTP601 Cable Entries
4.4.1 Gas Connection
The gas connections are on the bottom surface towards the front of the unit. The gas
inlet is the left hand connection when viewing the unit from the front. GP1 and GP3
models have 1/4" NPT female and EX1, EX3 & GP2 models have 1/8" NPT female gas
connections.
For applications where the oxygen concentration is 90%
or above, any PTFE tape used must be unsintered. This
is to prevent an explosion due to conventional PTFE tape
acting as a potential fuel source.
Unsintered PFTE tape is available as an accessory from Michell Instruments (PTFE-
TAPE-02).
4.4.2 Sample Gas Requirements
Samples must have a dew point at least 10°C less than the cell temperature (so as not
to condense), be free from oil-mist and with particle size < 3 μ m. NOTE: There is NO
filtration inside the analyzer.
Sample Inlet Pressure:
• 0 to 4 barg (0 to 58 psig)
Sample Flow Rate:
GP1 & GP3 models: 100 to 500 ml/min (0.2 to 1.06 scfh)
EX1, EX3 & GP2 Models: 270 to 330ml/min (0.54 to 0.66 scfh)
Ideally a flowmeter and needle valve would be placed in front of the analyzer and the
vent would be open to the atmosphere.