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083730400A DCN8130
Teledyne API – Model T400 O
3
Analyzer
43
2.3.2.3 PNEUMATIC CONNECTIONS: INTERNAL ZERO/SPAN (IZS) OPTION
VENT
here if input
is pressurized
Source of
SAMPLE GAS
Removed during
calibration
MODEL 701
Zero Gas
Generator
Instrument Chassis
ZERO AIR
DRY AIR
SAMPLE
EXHAUST
SPAN
VENT
Restrictor to regulate flow at
2 x’s analyzer gas flow
1
1
Enclosure Wall
Figure 2-15. Gas Line Connections for the T400 Analyzer with IZS Option (OPT 50G)
S
AMPLE
G
AS
S
OURCE
Attach a sample inlet line to theSAMPLE inlet port.
•
Sample Gas pressure must equal ambient atmospheric pressure (1.0 psig)
•
In applications where the sample gas is received from a pressurized manifold, a vent must
be placed on the sample gas line. This vent line must be:
•
At least 0.2m long
•
No more than 2m long
•
Vented outside the shelter or immediate area surrounding the instrument
Z
ERO
A
IR
S
OURCE
Attach a gas line from the source of zero air (e.g., a Teledyne API M701 zero air
Generator) to the
DRY AIR
inlet.
•
The gas from this line will be used internally as zero air and as source air for the internal
O
3
generator
E
XHAUST
O
UTLET
Attach an exhaust line to the EXHAUST outlet fitting. The exhaust line should be:
•
PTFE tubing; minimum O.D ¼”;
•
A maximum of 10 meters long;
•
Vented outside the analyzer’s enclosure.
L
EAK
C
HECK
Once the appropriate pneumatic connections have been made, check all pneumatic
fittings for leaks using the procedures defined in Section 5.6.3.
Содержание T400
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