Teledyne 2020 - Explosion proof thermal conductivity analyzer - Manual (Page 38)

4 Operation Model 2020
4-4 Teledyne Analytical Instruments
Either control switches you to Setup Mode . Setup Mode switches back to
Analyze Mode if no controls are used for more than five seconds.
4.2.1.2 Setup Mode
The MAIN MENU consists of 14 functions you can use to customize
and check the operation of the analyzer. Figure 4-1 shows the functions
available with the 2020. They are listed here with brief descriptions:
1 AUTO-CAL: Used to define and/or start an automatic
calibration sequence.
2 PSWD : Used to establish password protection or change the
existing password.
3 LOGOUT : Logging out prevents unauthorized tampering with
the analyzer settings.
4 MODEL : Displays Manufacturer, Model, and Software version
of the instrument.
5 SELF-TEST : The instrument performs a self-diagnostic
routine to check the integrity of the power supply, output
boards, cell and amplifiers.
6 SPAN : Set up and/or start a span calibration.
7 ZERO : start a zero calibration.
8 ALARMS: Used to set the alarm setpoints and determine
whether each alarm will be active or defeated, HI or LO acting,
latching or not, and failsafe or not.
9 RANGE : Used to set up three analysis ranges that can be
switched automatically with auto-ranging or used as individual
fixed ranges.
10 CONTRAST : Increase or decrease the LCD screen contrast.
YOU MAY NEED TO DO THIS AT TURN-ON. See Setting
the Display Contrast, below.
11 APPLICATIONS: Restricted function, not generally accessed
by the end user. Used to define up to three analysis ranges and
a calibration range (including impurity, background low end of
range, high end of range, and % of ppm units).
12 ALOGORITHM: Arestricted function, not generally accessed
by the end user. Used to linearize the output for the range of
interest.