AMC-400 Series Digital Transmitter with Smart Sensor 2
26
Sensor Status
Definition
Action
“
PUP
”
Sensor in stabilization Power Up Period
Wait up to 5 minutes for
sensor to stabilize.
“
CAL
”
Sensor needs Calibration
Consult
CALIBRATION and
MAINTENANCE sections in
this manual.
“
OFL
”
Sensor in Over Flow out of range state. Gas
concentration is exceeding full span range of
sensor.
Consult AMC for
appropriate Smart Sensor 2
type and use. It is not
recommended to operate
Smart Sensor 2 outside
specified operating limits.
Gas concentration is this
mode may be at hazardous
levels. When the gas
concentration falls to a
point it no longer exceeds
the full span range this
display is cleared.
“
SEr
”
Smart Sensor 2 module requires service
Contact AMC for Smart
Sensor 2 module service or
replacement.
In near zero gas and after the stabilization period, the transmitter will send accurate gas
concentration MODBUS packets to the monitor or controller. Although the electrochemical
sensors are very selective, there are some interference gases which can cause a response from
the sensor. In the case of a large response, please check background gas potential or the
possibility of an interference gas being present.
Caution:
When the gas concentration exceeds the full scale range, the display will alternate
between the reading value and the letters “
OFL
” for overflow. Refer to 2.1.2 SMART
SENSOR 2
MODULE(S) SPECIFICATION
for Range, consult AMC for alternative Smart
Sensor 2 types. It is not recommended to operate Smart Sensor 2 outside specified
operating Range. Gas concentration in this mode may be at hazardous levels.
The front panel view below shows the four areas of user interface; Pushbutton, Display, TX
Status, and Sensor Status. These user interfaces are briefly described below and referenced in
more detail under the initial configuration and calibration sub-sections.
