Pneumatic Connections: Internal Zero/Span (Izs) Option; Figure 2-15. Gas Line Connections For The T400 Analyzer With Izs Option (Opt 50G) - Teledyne T400 User Manual

2.3.2.3 PNEUMATIC CONNECTIONS: INTERNAL ZERO/SPAN (IZS) OPTION

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Figure 2-15. Gas Line Connections for the T400 Analyzer with IZS Option (OPT 50G)

S G
AMPLE
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 A
ERO IR
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 generator
3
E
XHAUST
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 C
EAK HECK
Once the appropriate pneumatic connections have been made, check all pneumatic
fittings for leaks using the procedures defined in Section 5.6.3.
083730400A DCN8130
VENT
here if input
is pressurized
Restrictor to regulate flow at
2 x's analyzer gas flow
VENT
S
AS OURCE
S
OURCE
O
UTLET
Teledyne API – Model T400 O
Source of
SAMPLE GAS
Removed during
calibration
SAMPLE
EXHAUST
Instrument Chassis
SPAN
ZERO AIR
DRY AIR
MODEL 701
Zero Gas
Generator
1
Analyzer
3
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