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Introduction
Function Keys:
Six touch-sensitive membrane switches are used to change the specific
function performed by the analyzer:
Analyze
System
Span
Zero
Alarms
Range
Data Entry Keys:
Six touch-sensitive membrane switches are used to input data to the
instrument via the alphanumeric VFD display:
◄►
▲▼
Enter
Escape
Digital Meter Display:
The meter display is a Light Emitting Diode (LED) device that produces
large, bright, 7-segment numbers that are legible in any lighting. It
produces a continuous readout from 0-10,000 ppm. It is accurate across
all analysis ranges without the discontinuity inherent in analog range
switching.
Alphanumeric Interface Screen:
The VFD screen is an easy-to-use interface from operator to analyzer. It
displays values, options, and messages that give the operator immediate
feedback.
Teledyne Analytical Instruments
Perform analysis for nitrogen content in an argon
gas mixture.
Perform system-related tasks (described in detail
in Chapter 4, Operation.).
Span calibrate the analyzer.
Zero calibrate the analyzer.
Set the alarm setpoints and attributes.
Set up the 3 user definable ranges for the
instrument.
Select between functions currently displayed on
the VFD screen.
Increment or decrement values of functions
currently displayed.
Advances VFD display to the next screen in a
series or returns to the Analyze screen if none
remain.
Backs VFD display to the previous screen in a
series or returns to the Analyze screen if none
remain also used to abort an entry.
Model 2120XL
4
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