Temperature Sensor; Pressure Sensor; Gas Cell Interface; Computer Interface - Thermo Scientific Omni FTIR Multi Gas CEMS Instruction Manual

System Component Description

Air Purifier

Temperature Sensor

Pressure Sensor

Gas Cell Interface

Computer Interface

Humidity Control

Air Purifier
7-12 Omni FTIR Multi Gas CEMS Instruction Manual
The temperature sensor is used to measure the cell gas temperature. This is
used to control the cell temperature and to compensate the concentration
calculations. The temperature controller is programmed to ensure that the
gas cell is not heated too quickly or to a temperature that could damage it.
The pressure sensor allows monitoring of the gas cell pressure. This is used
to compensate the concentration calculations and warn in the event of a
system pressure issue.
The FTIR analyzer provides sampling through the gas cell using an upper
sample beam path. The gas cell interface includes:
A stainless steel, pin-aligned mechanical interface to mount the gas cell
●
to the analyzer
A stainless steel mechanical interface to maintain the gas cell gasket seal
●
on the sample beam path
An optical interface to allow the infrared beam to pass between the
●
analyzer and the gas cell sample beam path
An electrical interface used by the software to control the gas cell
●
temperature with the heater
A power interface to support the gas cell heater, temperature controller
●
and pressure sensor
Interface between the FTIR analyzer and the computer is provided through
a USB interface.
The FTIR analyzer ships with desiccant in place to control the humidity
inside the optical compartment. When installed, the FTIR analyzer
supports purge with a dry air flow rate of 1.0 l/min.
The Parker Balston 75-45 FTIR Purge Gas Generator delivers clean, dry
compressed air with a dew point of -73 °C. The generator removes also
CO to a concentration of less than 1 ppm. The generator uses a
2
combination of coalescing filtration, regenerative pressure swing
adsorption, and high efficiency particulate filtration to produce laboratory
quality, dry, CO -free air from a standard compressed air supply.
2
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