Teledyne Analytical Instruments 311PC, Инструкция по эксплуатации

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Percent Oxygen Analyzer Operation 3
3–1
Teledyne Analytical Instruments
Operation
3.1 Introduction
The Model 311PC is supplied completely assembled and ready for
instant use. The Micro-fuel Cell is packaged separately and should be
installed prior to use (see Section 3.2). The integral shut-off valves in the
quick disconnect sample fittings, if not disturbed, will provide a seal from
oxygen in the air and extend the life of the Micro-Fuel cell when the instru-
ment is not used for extended periods of time (week—months).
When the range selector is advanced from the “OFF” position, power
to the instruments circuitry is established. The meter will instantly respond
to the residual oxygen within the integral sample passages. Depending on
the length of time since the last usage occurred, the reading will be some-
where between 0 and 21%.
3.2 Cell Installation
No tools are required to install the cell in the instrument. Simply
unscrew (ccw) the plug at the bottom of the analyzer. Remove the new cell
from its package and carefully remove the shorting device.
Note: Do not touch the gold colored sensing surface of the cell. It is
covered with a delicate Teflon membrane that can be ruptured in
handling.
Place the cell on the end of the manifold plug so that the sensing
surface of the cell is in contact with the plug and the electrical contact plate
end of the cell is facing upwards. Insert the cell and plug in the manifold
cavity, and screw the plug back into place. Apply as much pressure as you
can with your fingers, but use no tools.