Teledyne 3000TB-XL - Trace oxygen analyzer - Manual (Page 14)

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1 Introduction Model 3000TB
­XL
Teledyne Analytical Instruments
1.5.1 Displays
Digital Meter Display: The meter display is a LED device that
produces large, bright, 7-segment numbers that are legible in any lighting
environment. It produces a continuous readout from 0-9999 ppm and from 1-
25 %. It is accurate across all ranges without the discontinuity of analog
range switching.
Alphanumeric Interface Screen: The backlit VFD screen is an easy-
to-use interface from operator to analyzer. It displays values, options, and
messages that give the operator immediate feedback.
Flowmeter: Monitors the flow of gas past the sensor. Readout is 0.2 to
2.4 standard liters per minute (SLPM).
1.5.2 Function Keys
Six touch-sensitive membrane switches are used to change the specific
function performed by the analyzer:
• Analyze Perform analysis for oxygen content of a sample gas.
• System Perform system-related tasks (described in detail in
chapter 4, Operation.).
• Span Span calibrate the analyzer.
• Zero Zero calibrate the analyzer.
• Alarms Set the alarm setpoints and attributes.
• Range Set up the 3 user definable ranges for the instrument.
1.5.3 Data Entry Keys
Six touch-sensitive membrane switches are used to input data and
commands to the instrument via the alphanumeric VFD display:
• Left & Right Arrows Select between functions currently
displayed on the VFD screen.
• Up & Down Arrows Increment or decrement values of
functions currently displayed.
• Enter Moves VFD display on to the next screen in a series. If
none remains, returns to the
Analyze screen.