This indicates that the output from the
sensor is too low due to either:
a. a faulty sensor which may be poisoned
or damaged.
b. the calibration gas is incorrect. Check
the calibration gas bottle certicate
and age.
c. sticky gas such as chlorine or ammonia
is not reaching the sensor.
Note: With software version 1V5, Error 75
may be generated while setting
zero. In this case see Error 77.
74 Calibration Signal Too High
The calibration signal too high message
is displayed during calibration when the
sensor span signal is above the pre-
conguredlevelsandaspancalibration
can not be achieved.
This indicates that the output from the
sensor is too high due to either:
a. a faulty sensor, bad cabling or wrong
sensordefaultsinconguration.
b. the calibration gas is incorrect. Check
the calibration gas bottle certicate
and age.
Error Error Code Meaning Software Card Fault Latch
Code Version Status Signal
All Active No No