Exhaust Gas Connections - Thermo Scientific Prima PRO User Manual

Exhaust Gas
Connections
Thermo Fisher Scientific
Sample flow must be regulated. Typical flows are:
0.5 l/min for Prima PRO

5 l/min for Sentinel PRO

Flows in the range 0.1to 10.0 l/min for Prima PRO and 2 to 10 l/min
for Sentinel PRO can exist in certain configurations / installations.
Consult the factory or the manual for the specific inlet type fitted.
There are two gas outlets from the instrument that should exhaust
outside the work area either to atmosphere or a suitable vent system.
Rotary pump exhaust: 1/2" hose connection (2 for some

applications).
Inlet system exhaust: Connection specific to the inlet type. 1.0"

OD tube stub for RMS, 1/4" or 6 mm for most other inlet types.
On Sentinel PRO, a sample pump is normally fitted to the
exhaust port of the RMS inlet. The inlet exhaust in this case is
that of the pump, typically a hose connection, size dependent on
the pump size.
Note: The following should be taken into account:
Exhaust temperature can reach 120°C depending on inlet

type.
An exhaust line compatible with the gas composition and
temperatures must be used.
To avoid condensate returning to the inlet assembly, it may

be necessary to heat the line or fit a suitable liquid trap.
Fitting an exhaust line, angled downwards over its full length,
will aid in drainage of any condensate and in many instances
may be sufficient.
Users are responsible for assessing the composition and

physical characteristics of sample streams, the risks of
condensation, and taking appropriate measures to protect the
inlet system.
Caution!
An inert gas feed can be added to the inlet exhaust stream to

dilute corrosive, reactive, condensable, or hazardous (e.g.
explosive) gas mixtures.
In some instances explosive gas mixtures may form by

mixing different process gases in the common exhaust of
the inlet system.
Prima PRO & Sentinel PRO Mass Spectrometers User Guide
Site Requirements

Exhaust Gas Connections

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