Teledyne 2120XL - Trace Nitrogen Analyzer - Manual (Page 49)

Trace Nitrogen in Argon Analyzer Operation
Teledyne Analytical Instruments 37
4.3 Setup and Operation General Information
Once the analyzer has been installed, it can be configured for your
application. To do this you will:
 Set system parameters:
 Establish a security password, if desired, requiring
Operator to log in.
 Establish and start an automatic calibration cycle, if
desired.
 Calibrate the instrument.
 Define the three user selectable analysis ranges. Then choose
auto ranging or select a fixed range of analysis, as required.
 Set alarm setpoints, and modes of alarm operation (latching,
failsafe, etc).
Before you configure your Model 2120XL Analyzer these default
values are in effect:
Ranges: LO = 1 ppm, MED = 10 ppm, HI = 100 ppm.
Auto Ranging: ON
Alarm Relays: Defeated, 100 and 200 ppb, HI, Not failsafe, Not
latching.
Zero: Auto, every 0 days at 0 hours.
Span: Auto, at 000008.00 ppm, every 0 days at 0 hours.
If you choose not to use password protection, the default password
is automatically displayed on the password screen when you start up,
and you simply press ENTER for access to all functions of the analyzer.
4.4 Using the Data Entry and Function Buttons
Data Entry Buttons: The ◄►arrow buttons select options from
the menu currently being displayed on the VFD screen. The selected
option blinks.
When the selected option includes a modifiable item, the ▲/▼
arrow buttons can be used to increment or decrement that modifiable
item.
The ENTER button is used to accept any new entries on the VFD
screen. The ESCAPE button is used to abort any new entries on the