Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 76)

Alarm Messages Model 3500
Teledyne Analytical Instruments 62
Table 5.1 Relays and output status for Various Operation Modes
Relay
System Working
Status
LCD
Status
Bar
LCD
Alarm
Icon
(Graphics
Mode)
Warning
Alarm
(Relay_1)
Error Alarm
(Relay_2)
Concentration
Alarm
(Relay_3)
4-
20mA
Output
Power-off
No No Open = Alarm Open = Alarm Open (Alarm) 0mA
Start-up Mode
No No
Closed = No
Alarm
Closed = No
Alarm
Closed = No
Alarm
0mA
Normal
Status
Normal No
Closed = No
Alarm
Closed = No
Alarm
Depending on
gas
concentration
4-
20mA
Normal
Mode
Warning
Status
Alarm
Message
Code
Open = Alarm
Closed = No
Alarm
Depending on
gas
concentration
4-
20mA
Error Mode
Alarm
Message
Code
Open = Alarm Open = Alarm
Closed = No
Alarm
2mA
5.3 LCD Alarm Message Display
When the Model 3500 enters an alarm condition an alarm message
is displayed on the LCD screen. Detailed descriptions and solutions of
these messages are listed in Table5.2.
.