Tests automation with CEMView Gas Auditor
CEMView Gas Auditor is a dynamic, configurable software application to automate the cylinder gas auditing and testing procedures. Complex and labor intensive regulatory compliance tests, such as a Cylinder Gas Audit (CGA) or a Linearity check, are initiated, controlled, recorded and reported with the CEMView Gas Auditor.
The application is designed to work in parallel with the CEMView Data Acquisition & Reporting Software or as a stand-alone application with direct connectivity to an instrument with an appropriate instrument OPC server. With the CEMView Gas Auditor, various cylinder gas checks can be pre-programmed and easily run, on demand. Automatic and / or manual control sequences are easily developed with the integrated Windows Scripting Languages (VB Script and JScript).
• CEMView Gas Auditor saves on your bottled gases by automatically proceeding to the next step (averaging) as soon as the reading is stabilized and near expected value is achieved.
• The potential for human errors are significantly reduced by eliminating the possibility of skipping a step, plumbing the wrong bottle, not applying each gas long enough or calculating results incorrectly, etc.
• Tests will automatically abort should response times, near expected values, or stability criteria not be met. This saves running an entire test and hand calculations to determine results.
• No need for personnel to change bottles.
• No need to manually calculate response times.
• Technician can walk away after initiating a test.
• Technician can watch live trend of a test in progress.
• Message box displays current step in progress.
• The expected values will change on the chart with each bottle.
• CGA/Linearity report is automatic. No need to manually enter data into a custom spreadsheet.
• The results of each CGA/Linearity test are permanently stored for easy retrieval at a later date.
• Typically 1-2 hours of work verses 4-8 hours of work for each CGA/Linearity test.
• CEMView Gas Auditor allows you to run a CGA/Linearity test on each source simultaneously saving a significant amount of time on multi-source systems (when each source has its own data buffer).
• New plant personnel can easily perform the CGA/Linearity testing since the details of sequencing the valves, retrieving the data and calculating results are automatically handled by CEMView Gas Auditor.
• Saves thousands of dollars every quarter outsourcing linearity tests.
How Gas Auditor works
For example, the following is done to configure a Cylinder Gas Audit test in Gas Auditor.
- Specify the gases to be audited.
- SO2, NO, CO2
- Specify the sequence for the test
- Low, High, Mid, High, Low, Mid, Low, High, Mid
- Configure purge time and averaging time for the sequence
The application’s built-in inventory management capabilities for the gas cylinders allows the tracking of the following information:
- Gas cylinder manufacturer name
- Cylinder serial number
- First used on date
- Cylinder expiry date
- Gases in the cylinder
- Concentration of each gas in the cylinder
Before a CGA test starts, the application will automatically check and generate warning alarms if:
- Gas cylinder is out-of-date
- Cylinder gas pressure is low
The application will then proceed if everything is okay and it will automatically control the appropriate solenoid valves to produce the pre-programmed timing and sequence as it was previously specified. At the end of the pre-programmed sequence, the application will compute the following:
- Average CEM response value for the three audit points for each gas
- Average CEM response value and the accuracy in percent, for each gas
- Pass / Fail based on the results of the test.
A Cylinder Gas Audit Data Assessment Report is then automatically generated for the test by the system.
The technician can easily follow the progress of a text through a live trend screen.
The trend screen will show a horizontal line with the current expected value for each bottle as the test runs. A dialog box consistently informs the technician of the current step of the test. These steps include items such as “Low valve on”, “Response time Acquired”, “Near Expected Value achieved”, etc.
Simple drop down menus enable the user to easily set specific tests parameters. These values are automatically reflected on associated reports.
Any combination of gases are added to the test through a simple dialog box. Each calibration test bottle is parameterized. Users can change error limits, certification dates, manufacturer, etc. prior to running individual tests.
The reporting engine automates the painstaking process of manually entering real-time data into a spreadsheet. The reports can be saved in the following formats: .xls, .pdf, .csv, .xml or html.