Trace Oxygen Analyzer Introduction
Teledyne Analytical Instruments 3
Set LO Alarm Set the concentration BELOW which
an alarm activates.
Set HI Range Set the high analysis range for the
instrument (up to 0-1,000 ppm).
Set LO Range Set the low analysis range for the
instrument (down to 0-1,000 ppm).
Span Span-calibrate the analyzer.
Data Entry Keys: Two pushbutton membrane switches are used to
manually change measurement parameters of the instrument as they are
displayed on the LED meter readout:
Up Arrow Increment values of parameters upwards
as they are displayed on the LED readout.
Down Arrow Increment values of parameters
downwards as they are displayed on the
LED readout.
Digital LED Readout: The digital display is a LED device that
produces large, bright, 7-segment numbers that are legible in any
lighting environment. It has two functions:
Meter Readout
As the meter readout, it displays the
oxygen concentration currently being
measured.
Measurement Parameters Readout
It also displays user-definable alarm set-
points, ranges, and span calibration point
when they are being checked or changed.
1.4 Rear Panel Description The rear panel contains the electrical input and output connectors.
Separate rear panel illustrations are shown in Figure 1-2 for the AC and
DC powered versions of the instrument. The connectors are described
briefly here and in detail in the Chapter 3 - Installation.