Compressed Air Requirements - Thermo Scientific Prima PRO User Manual

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Compressed Air
Requirements
3-12 Prima PRO & Sentinel PRO Mass Spectrometers User Guide
Where this feature is used, the onboard pressure

regulator is set to 0.4 bar(g).
Nitrogen or inert gas must be used. Air is not acceptable.

A compressed air supply is required for the following two functions.
Cabinet purge: Requires a continuous flow of 100 Nl/min.

Failure of the air supply will result in power to the instrument
being cut on all purge options other than z-purge. Reliability of
the air supply is therefore critical to ensure uninterrupted
operation.
Air conditioner: A continuous flow of up to 300 Nl/min is

required to operate the air amplifiers that provide air flow for the
air conditioner condenser coil. The compressed air supply must
be in the pressure range of 4.0 to 6.9 bar(g).
Note:
There is an option for operation at pressures up to 10 bar(g).

The selected option will be indicated on the instrument label.

This must be adhered to.
If the pressure is likely to exceed the specified maximum,

additional regulation and pressure relief must be installed in
the incoming line.
The supply must be capable of delivering the total required flow, i.e.
400 Nl/min. Instrument quality air must be used – the air supply
must be clean and dry. Filter / regulator units are fitted for each of
these functions. These filters should be considered as a final stage
backup, not as active devices, and any problems with particulates,
water, or oil entering these filters should be rectified upstream of this
point.
The air inlet connection is 1/2" or 12 mm compression (location
shown on the appropriate installation drawing). A single connection
point is provided, except where remote or dual RMS systems are
involved, in which case there may be two connection points. Note
that the required minimum pressure is the pressure delivered to the
connection point, at the specified flow rate. Consideration should be
given to the pressure in the supply main and pressure drops in the
supply line (due to line length and diameter).
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