Oxygen is a paramagnetic gas, which means that it is
attracted by a magnetic field. This magnetic susceptibility
is much greater than that of most other gas molecules and
therefore this physical property is ideal for the determination
of the level of oxygen in a wide range of background gases.
The XTP600 series is a thermo-paramagnetic oxygen
analyzer where the combination of paramagnetic and thermal
conductivity technology is exploited to accurately measure
oxygen and to provide a second signal that correlates with
the matrix of the process gas. The magnetic susceptibility
of oxygen decreases inversely with its temperature. This
effect causes a flow of gas containing oxygen inside
the temperature-controlled measuring chamber of the
analyzer. The flow or "magnetic wind" alters the equilibrium
temperature between thermistor pairs resulting in a change
of the electrical resistance of the sensors and a signal that is
proportional to the oxygen concentration in the measured gas.
In addition to the outstanding linearity and stability of the
Michell XTP600 sensor, the insensitivity to mechanical shock
is another advantage of the thermo-paramagnetic technology.
As it relies solely upon fluctuations in magnetic fields and
not internal moving parts, the sensor will operate efficiently
under a wide range of environmental conditions. It is suitable
for installation where vibration or movement could pose a
problem for other sensor types.
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XTP600 Series
The XTP600 gas analyzer from Michell Instruments is designed to measure the percentage of oxygen in process gases...
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