2 sim method – INFICON HAPSITE Smart Plus Chemical Identification System User Manual

Page 367

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HAPSITE Smart Plus Operating Manual

Method elements are:

If the HAPSITE is to operate separate from the Service Module, the HAPSITE
must have a NEG Pump installed and activated. Refer to

section 2.8, Service

Module, on page 2-19

and

Chapter 15, Service Module

.

The method components must be defined. This includes the definition of:

the Data file (where the data will be stored)

the Full-scan parameters (which defines the mass range and other
parameters of the mass spectrometer operation)

the Library Search parameters (which designates which library file to
access, individual and collective peak search, integration parameters, and
various reporting options)

the Inlet parameters (which defines the events and the order in which they
occur, the temperature profile and ramping rate, the filament delay time, as
well as the control parameters of the HSS or SituProbe, if installed)

the Tune file (which optimizes the mass spectral response to the target
compounds and the Internal Standards)

If the HAPSITE is to operate without the Laptop, the method must be saved
on the HAPSITE.

The HAPSITE must be tuned. (Refer to

Chapter 7, Tune

.)

The HAPSITE must be calibrated to the target compounds. (See

Chapter

12, Target Compound Methods

.)

11.3.2 SIM Method

The SIM Analyze (GC/MS) method is used for the identification and quantitation of
only specific (or target) compounds expected to be in the sample.

This type of analysis should be used where the highest sensitivity (lowest minimum
detectable concentration) is required, and where the compounds to be measured
are known. The SIM Analyze (GC/MS) method might include one or many specific
compounds for which the HAPSITE will be calibrated.

This work may be carried out with just the HAPSITE, or a Laptop, Service Module,
HSS, SituProbe, and/or sample conditioning probe may be used. Regardless of the
configuration, certain method elements must be defined and set-up procedures
must be carried out. The method elements are:

If the HAPSITE is to operate separate from the Service Module, the HAPSITE
must have a NEG Pump installed and activated. Refer to

section 2.8, Service

Module, on page 2-19

, or

Chapter 15, Service Module

for additional

information.

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