Technical Implementation; Fig. 3-10A: Tc Cell, Exterior View; Fig. 3-10B: Tc Cell, Sectional View - Emerson Rosemount Xstream Series Instruction Manual

Instruction Manual
HASAxE-IM-HS
05/2006
3-3-2

Technical Implementation

A block made either of aluminum, stainless
steel or hastelloy contains two gas paths. Both,
the volume of the block and the mass of the
sensors have been minimized in order to
obtain short response times. To suppress
1
2
3

Fig. 3-10a: TC cell, exterior view ,

thermal isolation removed
1 Sensor
2 Sample gas inlet and output
3 Reference side inlet and output
4 Metal block
5 Heater for thermostatting
Emerson Process Management GmbH & Co. OHG
3-3 Thermal Conductivity Measurement
4 5
influences by changing ambient temperature
the block is thermostatted and isolated against
ambience.
The sensors are fully glass packaged to
withstand aggressive gases.
2 1
Fig. 3-10b: TC cell,
sectional view
1 Internnal gas path
2 Sample gas inlet and output
3 PT 100 sensors
4 Metal block
5 Lid
X-STREAM
3 4 5
3-15