To add a parameter configuration, select a Site from the Site/Parameter tree and click the Add Parameter button near the top of the AirVision screen (Figure 3-6). To edit a parameter select a Site and then double-click a Parameter.


Figure 3-6 Parameter Configuration from the Site/Parameter Editor in Configuration Editors

The Parameter screen (Figure 3-6) displays the following fields:

• Site - The Site you selected in the Site/Parameter tree will automatically be displayed.
• Parameter - Alphanumeric characters to identify the Parameter
• Parent Parameter - A Parent Parameter can be designated to form relationships that can be used for drill-down in the Data Editor. For example, a primary analyzer pollutant such as NOx could be a parent and designated diagnostic parameters such as sample flow or box temperature could be children. Another
• example would be to assign particulate parameters as parents and metals for XRF (X-ray fluorescence) analysis as children. If the parameter has a parent parameter, select it from the drop-down list.
• Parameter Template - Parameter information can be filled in automatically by selecting a Parameter Template, which will set up EPA codes and units. Basic Parameter Templates are provided in AirVision. They can also be configured in the Parameter Template Editor, which defines basics like units, EPA reporting codes, and graph limits. (See “Configuring Parameter Templates.”) You shouldn’t have to make changes to the Parameter Template unless the defaults become outdated by changing EPA regulations. If you want to automatically fill in parameter information using a template, select a parameter template from the drop-down list and click Apply. If you have converted your data from E-DAS and the information is already filled in, you can still select a template but do NOT click Apply or it will be overwritten.
• Enabled - Check the box to enable the parameter.
• Enable AIRNow Reporting - For AIRNow parameters only, check the box to include this parameter in AIRNow reports.
• Filter from Web Site - Check the box to filter data from website
• Parameter Data Type - Select a data type: Average (Continuous), Composite Sample, or Particulate Sample (for manually entered data).
• Description - Enter a brief description of the parameter (optional).
• EPA POC - Enter an EPA Parameter Occurrence Code if needed. POC is used for different monitors measuring the same parameter at one site.
• EPA Method - EPA sampling Method Code
• EPA Units - Select EPA Units (including the EPA unit code) from the drop-down list (e.g., 007-parts per million, 015-degrees Fahrenheit).
• EPA Parameter - Select a parameter (including EPA parameter codes) from the drop-down list (e.g., 44201 - Ozone).
• EPA Reported Digits - Total number of digits, including decimal places, that will be reported to the EPA.
• EPA Reporting Precision - Number of decimal places for reporting precision.X’s and Y’s to the right of the reporting precision field illustrate the format of the digits/precision, e.g., XX.YY indicates a total of four Reported Digits with a Reporting Precision of two.
• Truncate/Round Rule - Determines whether data in reports will be rounded or truncated
• Reported Units - Units that will be used for reports e.g., PPM
• Analyzer Units - If the analyzer units are different from the primary parameter, select analyzer units from the drop-down list.
• Graph Minimum - Lower y-axis limit for graph display
• Graph Maximum - Upper y-axis limit to for graph display
• Calibration Span - This field is determined by the instrument. Enter the configured calibration span value for the parameter to determine the parameter’s calibration error (at the data logger).
• Instrument Detection Limit (DL) - Minimum concentration of an analyte that can be measured by an instrument. The DL is an estimate of concentrations at where you can be fairly certain that the compound is present. Concentrations below this limit may not be detected. Used for air toxics measurements only (can be blank if not needed).
• Limit of Quantization (LOQ) - A minimum criterion or region for quantization that should be clearly above the detection limit. The lowest concentration of an analyte in a sample that can be determined (quantitated) with acceptable precision and accuracy under the stated operational conditions of the method. Traditionally, this is approximated as 10 times the signal-to-noise (S/N) ratio.
• Minimum Detectable Limit (MDL) - EPA defines the MDL as the minimum concentration of a substance that can be measured and reported with a 99% chance that the analyte concentration is greater than zero.
• Practical Quantization Limit (PQL) - The lowest concentration of an analyte that can be reliably measured within specified limits of precision and accuracy during routine laboratory operating conditions.
• Totalize In Reports - Used for channels such as rainfall, etc. Indicates that Daily Summary and Monthly Report column/row summaries should show a total, rather than an average.
• Report Minimum - Used for channels such as rainfall, etc. Indicates that Daily Summary and Monthly Report column/row summaries should show a minumum value, rather than an maximum value.
• Parameter Report Order - Controls the order of printing in the Daily Summary Report and Monthly Report (lowest to highest). If not set, parameters are printed last, in ascending alphabetical order.
  
• Additional Information - You can add notes at the bottom of the Parameter Editor by clicking on the asterisk at the bottom of the screen. Enter a Name, for example “Data Last Certified,” and a Value, for example “9/1/2008.” To add another row when you have completed your entry, press the Tab key on your computer keyboard. A blank row will be displayed.