Teledyne 3000ZA2G, Руководство по эксплуатации

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Trace Oxygen Analyzer Operational Theory
Teledyne Analytical Instruments 11
The sample system for the standard instrument incorporates 1/8”
tube fittings for sample inlet and outlet at the rear panel. The sample or
calibration gas that flows through the system is monitored by a
flowmeter downstream from the cell.
Figure 2-3 shows the flow diagram with an optional gas manifold.
In the standard instrument, calibration gases can be connected directly to
the Sample In port by teeing to the port with appropriate valves.
Figure 2-3: Flow Diagram
2.4 Zirconium Oxide Sensor Application Notes
The following sample gases require conditioning prior to entering
the sensors:

Flammable gases such as methane, alcohol and carbon
monoxide may cause a measurement error. They must be
filtered from the sample gas before entering the cell.

Gases containing halogen atoms (F, Cl, Br, etc.) such as
Freon, must be filtered before entering the cell. The sensor
will be damaged by the decomposition of Freon.
 Gases containing SOx, H
2
S, silicone vapor and adhesives
must not enter the sensor. These components adversely affect
the performance of the sensor.

Dust, particulates( >3 microns), and oil should be filtered
from the sample gas.

Water vapor in contact with the sensor will damage the
sensor. Use a moisture trap or filter to remove any water
vapor in the sample.
2.5 Electronics and Signal Processing
The Model 3000ZA2G Trace Oxygen Analyzer uses an 8031
microcontroller with 32 kB of RAM and 128 kB of ROM to control all