Manual Background Spectrum Collection Using Thermo Modbus Controller - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Calibration

Manual Background Spectrum Collection using Thermo Modbus Controller

Manual Background
Spectrum Collection
using Thermo
Modbus Controller
4-10 Omni FTIR Multi Gas CEMS Instruction Manual
Copy just collected zero air background and rename.
Name the copied file BKG. Select ImaccMonitor to return to
measurement.
Another way to collect instrument zero spectrum is to use Thermo Modbus
Controller. In the pull down menu "system command setting", choose
"background", so that the related solenoid valves are energized. Zero air
flows into the gas cell while the sample valve is closed and the flow back
valve is open. Let the system run in this mode for at least 10 minutes, so
that the concentrations for all gases reach either zero or their detection
limits. The concentration changes can be seen on the software live data
display, since the system is continuously collecting data in this mode. Go
back to system command setting, select "save background" mode. The
system starts to collect the spectrum and saves it as
"c:\backgrounds\bkg.spa. After completion, switch the system command to
"sample".
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