4 | Description
INFICON
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T-Guard2_Operating-instructions-jina85en1-13-(2009)
4 Description
4.1 Function
Function and setup of the device
The T-Guard2 can verify and quantify helium using a Wise Technology™ Sensor.
A fore pump, which is an available accessory, provides constant pressure and flow at
the Wise Technology™ Sensor.
During a measurement, outside air is sucked in through the reference inlet. This
allows the natural helium content of the air at the measurement location to be
measured. This measurement value influences the calculation of the test result.
Wise™ Technology
Sensor
The Wise Technology™ Sensor consists of a glass housing, which is locked with a
quartz membrane. The quartz membrane is permeable only for helium.
The pressure in the interior of the glass housing is measured by a highly sensitive
measurement system. The pressure is proportional to the helium concentration of the
supplied air and the air extracted from the measuring chamber.
Содержание 540-200
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