Teledyne LGA-3500 - Laser Gas Analysis system - Manual (Page 78)

Alarm Messages Model 3500
Teledyne Analytical Instruments 64
31/32
The pressure of
the gas
environment
under test
exceeds the
Model 3500S
application limit.
A=O b=C c=X
X means that it
depends on the gas
concentration value.
4-20mA,
the exact
number is
from
calculation.
The gas concentration is
calculated with the pressure
limit; check the gas pressure in
the environment under test.
Note: In this situation, the
calculated concentration may
be inaccurate.
33
The sensor used
to measure gas
pressure is not
wired correctly.
a=O b=C c=X
4-20mA,
the exact
number is
from
calculation.
The gas concentration is
calculated with the default
pressure value; check the
wiring and working condition
of the pressure sensor.
Note: In this situation, the
calculated concentration may
be inaccurate.
35/36
The temperature
of the gas
environment
under test
exceeds the
Model 3500S
application limit.
a=O b=C c=X
4-20mA,
the exact
number is
from
calculation.
The gas concentration is
calculated with the
temperature limit; check the
gas temperature in the
environment under test.
Note: In this situation, the
calculated concentration may
be inaccurate.
37
The sensor used
to measure gas
temperature is
not wired
correctly
a=O b=C c=X
4-20mA,
the exact
number is
from
calculation.
The gas concentration is
calculated with the default
temperature value; check the
wiring and working condition
of the temperature sensor.
Note: In this situation, the
calculated concentration may
be inaccurate.
41/42
Current
measured gas
concentration
exceeds the user-
defined range
a=C b=C c=O
4-20mA,
the exact
number is
from
calculation.
43
Model 3500S
EEPROM fault
a=O b=O c=C 2mA
Power off the system; contact
the technical support center.