Sample System - Teledyne 3010TA Operating Instructions Manual

2 Operational Theory
2.3

Sample System

The sample system delivers gases to the Micro-Fuel Cell sensor from
the Analysis Unit Gas Control Panel inlets. Depending on the mode of
operation either sample or calibration gas is delivered.
Figure 2-4 is a typical flow diagram for the sampling system. The flame
arrestors and valves (shaded) are optional.
When the –C option is ordered, the valves are installed inside the 3010
enclosure and are regulated by the remote Control Unit electronics.
Span In
Zero In
Sample In
In vacuum service the
restrictor should be
placed here.
Exhaust Out
Restrictor
The Model 3010T sample system is designed and built to ensure that
the oxygen concentration of the gas is not altered as it travels through the
sample system. The sample encounters almost no dead space. This mini-
mizes residual gas pockets that can interfere with trace analysis.
The metal restrictor upstream from the cell helps manage the flow
through the system (1SLPM at 20 psig for nitrogen). It is corrosion resistant.
The sample or calibration gas flowing through the system is monitored
by a flowmeter downstream from the cell. The sample system for the stan-
dard instruments incorporates
connections on the Gas Control Panel. For metric system installations, 6 mm
adapters are supplied.
For Vacuum Service, the restrictor is located downstream of flowmeter.
The restrictor is installed in the exhaust port on the gas panel.
2-6: Part II
Solenoid
Valves
In normal service the
restrictor should be
placed here.
Figure 2-4: Flow Diagram
inch tube fittings for sample inlet and outlet
1/4
Model 3010
Components in the shaded area are in
the -C option (internal control valves)
only and are not shown in the piping
diagram above.
Cell
Flowmeter
T