Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 41)

Laser Gas Analyzer Operation
Teledyne Analytical Instruments 27
4.2.3 Error Mode
When the analysis system detects any fatal error that may damage
the system permanently (for instance, when the temperature in the
central processing unit is too high or the temperature of the laser device
is abnormal), the system automatically switches from start-up mode or
normal mode to error mode. In this mode, the system will stop gas
concentration measurement and most system operations, and enter
protection status. The front panel on LCD shows the corresponding error
information (Alarm code in the status bar, and error symbol in
MainMenu in graphics mode). The output ports (4-20mA and relay) still
send out alarm information.
4.3 System Menu
The Model 3500 operation interface employs a user-friendly menu
structure. There are six main menus:
• MainMenu
• Display
• System
• Cali.
• Com.
• Alarm
The entire menu has a simple and clear structure as shown in Figure
4.5 and is easy to operate.