Teledyne T300, Руководство по эксплуатации, Страница: 68 / 426

Getting Started Teledyne API – Model T300/T300M CO Analyzer
66
Source of
SAMPLE GAS
Removed during
calibration
MODEL 701
Zero Gas
Generator
Calibrated
CO Gas
at span gas
concentration
(Adjust to 30
psig)
VENT
here if input
is pressurized
PRESSURE SPAN
ZERO AIR
SAMPLE
EXHAUST
VENT SPAN
Model 700E gas
Dilution
Calibrator
VENT
VENT
Instrument
Chassis
Figure 3-21: Pneumatic Connections – Option 50A: Zero/Span Calibration Valves
S
AMPLE
G
AS
S
OURCE
Attach a sample inlet line to the sample inlet port. The SAMPLE input line should not
be more than 2 meters long.
•
Maximum pressure of any gas at the sample inlet should not exceed 1.5 in-hg above
ambient pressure and ideally should equal ambient atmospheric pressure.
•
In applications where the sample gas is received from a pressurized manifold, a
vent must be placed on the sample gas before it enters the analyzer.
C
ALIBRATION
G
AS
S
OURCES
A vent may or may not be required when a T700-series is used with this option,
depending on how the T700-series model output manifold is configured.
S
PAN
G
AS
:
•
Attach a gas line from the source of calibration gas (e.g. a Teledyne API’s T700
Dynamic Dilution Calibrator) to the
SPAN inlet at 30 psig.
Z
ERO
A
IR
:
•
Zero air is supplied via a zero air generator such as a Teledyne API’s T701.
•
An adjustable valve is installed in the zero air supply line to regulate the gas flow.
I
NPUT
G
AS
V
ENTING
The zero air supply and sample gas line MUST be vented in order to ensure that the
gases input do not exceed the maximum inlet pressure of the analyzer as well as to
prevent back diffusion and pressure effects. These vents should be:
•
At least 0.2m long;
•
No more than 2m long and;
Vented outside the shelter or immediate area surrounding the instrument.
06864B DCN6314