Sample Gases - Thermo Scientific Prima PRO User Manual

Site Requirements
Inlet Gas Connections

Sample Gases

3-6 Prima PRO & Sentinel PRO Mass Spectrometers User Guide
Note: The accuracy of analytical data produced by the instrument is
directly related to the accuracy, quality, and stability of the
calibration gases. In addition to the accuracy of certification,
attention should also be given to factors such as shelf life and storage
conditions (temperatures and bottle orientation, for example) that
could result in effects such as condensation, stratification, or
degradation, all of which could influence the quality of calibration.
Seek advice from your gas supplier.
Double stage regulators with 0-2 bar(g) (adjustable) output stages
and 40 bar (maximum) outlet pressure relief should be used with the
gas cylinders (pressure relief is not required if the cylinder pressure
is less than 40 bar). It is the user's responsibility to provide
calibration gas cylinders, regulators, and pipe work from each
cylinder to the calibration panel and safe venting of pressure relief
valves.
Caution! Regulators and line materials must be compatible with
the gases in question. The use of good quality regulators ensures
reliable calibration gas flow, especially for unattended operations.
It is the user's responsibility to install sample lines to the
instrument's inlet assembly. The line material must be compatible
with the sample gas stream composition and operating temperatures.
Caution!
Each sample stream should be reviewed with regard to

sample conditioning / filtering.
As a minimum, each line should be filtered to prevent

particulate contamination.
Even where dust levels in the sample gas are very low, it is

recommended that a 2 µm particulate filter with a capacity
appropriate to the dust loading of the sample gas be fitted.
If significant quantities of dust particles < 2 µm are present, a

smaller pore size filter should be used.
Precautions must be taken to prevent liquid in any form

(liquid condensate, foam, aerosols, etc.) from entering the
inlet system.
Suitable traps and / or heated lines, avoiding cold spots,
should be used.
Thermo Fisher Scientific