Teledyne 3290 - OEM percent oxygen analyzer - Manual (Page 13)

Percent Oxygen Analyzer Introduction
Teledyne Analytical Instruments 3
Function Keys: Five pushbutton membrane switches are used to select
the function performed by the analyzer:
 Set HI Alarm Set the concentration ABOVE which
an alarm activates.
 Set LO Alarm Set the concentration BELOW which
an alarm activates.
 Set HI Range Set the high analysis range for the
instrument (up to 0-25 %).
 Set LO Range Set the low analysis range for the
instrument (down to 0-1 %).
 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 setpoints, ranges,
and span calibration point when they
are being checked or changed.