COSA Xentaur Xentaur XDTL-HT - Manual (Page 11)

Installation
11
Extractive Installation
Enclosure
1
6
4
8
9
Calibration
Gas Inlet
Process
Gas Inlet
Sample
Gas
Exhaust
7
pipeline
Pipe Nipple
Thredolet
Ball Valve
Baseplate
Housing
Regulator
Relief Valve
Ball Valve
Outlet Connector
Pressure Gauge
Notes:
Enclosure insulated on all sides to
maintain nomially 34°C ± 1°C in a
temperature range of -20°C to 50°C.
Inlet rated to 6000 psig maximum.
Flow rate is 2 l/min nominal.
All ¼” Swaglok fittings and tubing.
Shop Air
Inlet
Shop Air
Inlet
Sample
Gas
Exhaust
5
5
2
2
10
1. Back pressure regulator 5. Adjustable regulator 9. Pressure gauge (0-30 psig)
2. Eductor 6. 3-way valve 10. Gas sampling filter
3. All ¼” stainless steel tubing 7. XTDL-HT™ laser cell
4. Flow meter 8. Enclosure heater
The instrument should be installed in a slip stream of process gas. Please make sure that:
 The sample is taken from the upper surface of the main gas line to avoid problem of
contamination.
 The sample is taken away from the pipe wall where flow rates may be low, and dewpoint change
may lag.
 If regulators or shut-off valves are used up stream of the instrument, make sure that these do not
contain rubber or other hygroscopic materials.
 Stainless steel tubing is preferred. Copper tubing is acceptable. Do not use plastic, rubber, or
Tygon tubing due to water retention in these materials.
 Use small diameter pipes (1/4” or 1/8” OD).
 Do not install other devices up stream of the instrument, such as other measurement systems,
which are not absolutely necessary as these are potential leak sources.