GCAS OPERATION FOOTPRINT Footprint Access from View Footprint
- Slides: 77
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 (R 2) • 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 • • • 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 Anwar. Sutan@i-Vigilant. com www. i-vigilant. co. uk i-Vigilant @i_Vigilant i-Vigilant
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