Sample Probe; Sample Line; Temperature Controller; Sample Conditioning - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

Introduction
System Overview

Sample Probe

Sample Line

Temperature
Controller
Conditioning
1-4 Omni FTIR Multi Gas CEMS Instruction Manual
The direct extractive probe assembly is used to extract and condition a
continuous sample from a stack or duct for transport to a gas analysis
system. The standard probe assembly consists of a 1-meter heated probe
barrel and pre-filter, a heated filter assembly, and a blow-back tank and
valve assembly. The standard sample probe has an ANSI 4-inch flange
mount and 1.0 meter heated probe barrel, but can be custom ordered to
meet customer requirements.
A flexible heated line is used to convey the sample from the sample probe
to the sample conditioning assembly in the system rack. This line includes
a 1/4-inch sample line, a 1/4-inch calibration line, and a 3/8-inch blowback
line. The sample line length may be from 33 feet (10 meters) to 100 feet
(30.5 meters).
The system includes a temperature control module which is used to control
the temperatures in the following components:
FTIR cell
●
Sample conditioning assembly
●
Heated lines to FTIR
●
Sample line
●
In addition, the FTIR cell pressure is measured with this controller.
Sample
The sample conditioning subsystem consists of multiple components that
are used to control and condition the sample and calibration gases:
Sample system heater assembly (pump, sample valve, check valve, pre-
●
heaters)
Hydrator
●
Pneumatic panel
●
FTIR purge gas generator
●
Instrument air filter assembly
●

FTIR

The FTIR analyzer is a Thermo Scientific Antaris IGS instrument which is
based on a Michelson interferometer which measures the interaction of
infrared (IR) radiation with the sample. The FTIR analyzer includes a 5.2-
Thermo Fisher Scientific