Transcript GCAS® OPERATION - i

GCAS® OPERATION
FOOTPRINT
Footprint
• Access from View – Footprint menu
Footprint – RF Trend
• Shows the trend of RF in the correct order of RF from low to high
• Trend should be ascending
Footprint – Correlation Chart
• Shows correlation between RF and molecular weight of saturated
component
• For Daniel GC, correlation on the first two chart is expected to be
higher than 0.995
• The third chart will help troubleshoot in case of low correlation in
the first two charts
Footprint – Retention Time
• Shows the chart of retention time of each component
CALIBRATION DATA
Calibration Data
• Access from View – Calibration Data menu
Calibration Data Features
• Features is exactly the same as footprint
• It shows calibration data in comparison to its footprint
FOOTPRINT / CALIBRATION DATA
ACTION MENU
Action Menu
• When footprint or calibration data page is open, Action menu will be
shown.
Action Menu – Import Data
• Import data is to import GC generated final calibration report
• On Daniel GC it will be a text file of Final Calibration Report
• It is not necessary to do this if the GC is connected via Modbus
Action Menu – Import Data CSV
• GCAS has csv format it recognize
• Historical data can be imported to GCAS using CSV file
• Both Calibration (RF and RT) and Mole% data can be imported
Action Menu – Manual Entry
• Manual Entry is possible
• This is for data that is not available in electronic format to be entered
manually
• Caution needs to be taken as there is no edit feature on footprint /
calibration data page
Action Menu – Set Status
• Status to each data can be set as following:
– Active / Inactive
• Inactive data will not be included in the trend
• Inactive data will not be included in uncertainty calculation
– Set flag
• Footprint data will be used as reference of calibration data comparison
Action – Add Comment
• Each calibration data can be added a comment associated with it
• It can be error found or any finding regarding to the particular
calibration data
• This can be used as audit trail
MOLE COMPOSITION
Mole Composition
• Access from View – Mole Composition menu
Mole Composition
• Data is stored as normalized percentage
• Un-normalized percentage can be shown as a reference
MOLE COMPOSITION ACTION MENU
Action Menu
• When mole composition page is open, Action menu will be shown
Action Menu – Spot Sampling
• It allows spot sampling data to be entered as mole composition
• Spot sampling will be shown as a dot in mole composition trending
• It will be compared against GC measured mole composition in the
same trend
Action Menu – Import Data CSV
• Historical data can be imported using a CSV file
Action Menu – Set Status
• Mole Composition status can be set as active / inactive
Action Menu – Set Status (Bulk)
• Many data from a period of time can be set as a bulk
• It is useful for instance in situation where there is platform shut
down and therefore the data for the period is meaningless
Action Menu – ISO 6976 Calculation
• It shows the ISO 6976 calculation for the particular mole composition
• Once in the page, other data can be selected from the same GC
Action Menu – Add Comment
• Comment can be added to each mole composition
CALIBRATION GAS CERTIFICATE
Calibration Gas Certificate
• Access from View – Calibration Certificate menu
Calibration Gas Certificate
• Shows the information of the
calibration gas being used
• Historical data is also stored
• Provide information of uncertainty of
each gas
• Information tab provide information of
the bottle
CALIBRATION GAS CERTIFICATE
ACTION MENU
Action Menu
• When calibration gas certificate page is open, Action menu will be
shown
Action Menu – New Certificate
• New certificate menu is to enter the
calibration gas certificate data
• Both mole% and uncertainty to be
entered
• Uncertainty value will be used to calculate
overall GC uncertainty that can be
accessed from another form
• Bottle information to be entered as audit
trail
Action Menu – Edit Certificate
• This feature is useful to correct any
mistake on entered data
• Edit certificate feature has been
added as it has been many cases
where data was entered wrongly
Action Menu – Set Status or K-Number
• Set status is to make the calibration certificate status active / inactive
• Inactive status will not be included in uncertainty calculation as well
as multi level calibration / Single Point Calibration conversion
• Set k-number is to set the confidence level of uncertainty, k = 1
(68%); k = 2 (95%)
Action Menu – ISO 6976 Calculator
• Provides ISO 6976 calculation for calibration gas composition
Action Menu – Add Comment
• Provide comment for the particular calibration gas for audit trail
DATA ANALYSIS
Data Analysis
• Access from View – Data Analysis menu
Data Analysis
• The following is data Analysis Form
Data Analysis – Select Parameter (RF)
• When selected parameter is RF, select component will determine
which component will be trended. Single or multiple component can
be trended in the same chart.
Data Analysis – Select Chart Type
• Chart type can be selected
as RF/RT trend or RF/RT
deviation trend (similar logic
for RF and RT parameter)
• RF/RT trend will show actual
data
• Deviation trend will show
difference to footprint
• Multiple data can be shown
in the same trend
Data Analysis – Select Parameter (mc)
• MC is short for Mole Composition
• Shows the mole composition from
GC
• Display spot sample button will
show spot sample result in the
trend
• Select stream will show the trend
of GC associated stream
Data Analysis – Select Parameter (mc)
• MC is short for Mole Composition
• Shows the mole composition from
GC
• Display spot sample button will
show spot sample result in the
trend
• Select stream will show the trend
of GC associated stream
Data Analysis – Select Parameter (R2)
• This shows the trend of correlation parameters
• One or more parameters can be shown in the same trend at the
same time
Data Analysis - Option
• Plot range: To select time range for data to be
plotted
• Display mean and ± 2 x standard deviation: to
show the mean and 2σ in the trend
• Various options on what data is used to
calculated the mean and 2σ
REPEATABILITY TEST – UNDER
CONSTRUCTION
UNCERTAINTY CALCULATION
Uncertainty calculation
• Access from View – Uncertainty Calculation menu
Uncertainties to Include
• Select what uncertainty to
include in overall uncertainty
calculation
• Calibration gas needs to exist
for this form to work
• MLC constant to exist for
option of repeatability and
linearity to work
• Calibration data history to
exist for reproducibility to
work
Uncertainty from the calibration gas
• Select which calibration gas to
be used for calculation
• Cal gas data also used for GC
reproducibility and ISO 6976
uncertainty calculation
Uncertainty from GC repeatability and
linearty
• Enter or choose existing
repeatability coefficient set
• Enter or choose existing
linearity coefficient set
• Enter mole% range
Uncertainty from GC reproducibility
• Select which range of
calibration data to be included
in uncertainty calculation
ISO 6976 INPUTS
• Select options for ISO 6976
calculation to determine the
sensitivity calculation of each
component
Calculations
• Shows the step by step
calculation results of the
uncertainty calculation
Outputs - Summary
• Shows the summary of
uncertainty calculation
Outputs – Uncertainty of xx
• Shows the detailed
result of uncertainty of
ISO 6976 calculation
UNCERTAINTY COEFFICIENTS
Uncertainty Coefficients
• Shows the in-use multilevel calibration coefficients being used for
repeatability and linearity uncertainty calculation
Uncertainty Coefficients – Action Menu
• From action menu the following can be done:
– Edit current coefficient
– Add new coefficient set
– Set status (active / inactive)
UNCERTAINTY TREND
Input option
• Parameters to be used for trending needs to be identified prior to
trending
Input Option
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Define which uncertainty to include
Select which calibration gas certificate to be used
Select which footprint to be used as reference for uncertainty calculation
Select coefficient set for repeatability/linearity uncertainty
Select ISO 6976 option
Select direction of calculation
– Forward (from footprint onward)
– Backward (last n number of data)
• Select data range
• Set threshold value
Trend Page
• Trend of all ISO 6976 output uncertainty can be selected
• Trend will be done based on the input option selected
MULTILEVEL CALIBRATION COEFFICIENTS –
UNDER CONSTRUCTION
COMMENTS
Comments
• Shows all comments related to selected device
• Each comment can be clicked to bring the related page up
DASHBOARD
Dashboard
• Dashboard shows the current condition of all GC in the system
• Green means all is healthy
• Red means that GC needs attention
DASHBOARD SETTINGS
Dashboard Settings
• What to be displayed and what will trigger alarm can be set in
dashboard setting
Health status to display
• Maximum of 4 statuses can be displayed which is selectable
Rules
• Alarm rules can be set from rules tab
Uncertainty calc setting
• As uncertainty calculation is dependent on data selection, which data
to be displayed on dashboard can be set
Display Style
• Select how the data to be displayed on dashboard
Miscellaneous
• Shows some of miscellaneous selection as shown on picture below
Thank You
[email protected]
www.i-vigilant.co.uk
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