Pneumatic Connections: Zero/Span (Z/S) Option; Figure 2-14. Gas Line Connections For The T400 Analyzer With Zero/Span Valve Option (Opt 50A) - Teledyne T400 User Manual

2.3.2.2 PNEUMATIC CONNECTIONS: ZERO/SPAN (Z/S) OPTION

For a Model T400 photometric ozone analyzer with the optional zero/span valves, attach
the pneumatic lines as described in this section.
VENT
of calibrator is not
already vented
1

Figure 2-14. Gas Line Connections for the T400 Analyzer with Zero/Span Valve Option (OPT 50A)

The instrument's zero air and span gas flow rate required for this option is 800 cc/min,
however, the US EPA recommends that the cal gas flow rate be at least 1600 cc/min.
S G
AMPLE
Attach a sample inlet line to the SAMPLE inlet fitting.
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
C
ALIBRATION
Attach a gas line from the source of calibration gas (e.g. a Teledyne API T700 Dynamic
Dilution Calibrator) to the SPAN inlet.
• Span gas can by generated by a M700E Mass Flow Calibrator equipped with a
Photometer Option or an M703E UV Photometric Ozone Calibrator.
083730400A DCN8130
VENT
here if input
is pressurized
Model 700E
here if output
Gas Dilution
Calibrator
VENT
Restrictor to regulate flow at
2 x's analyzer gas flow
S
AS OURCE
(S ) G S
PAN AS OURCE
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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