Uncertainty
Navigate to your uncertainty budgets by clicking 'Administration' from the main menu bar then 'Sites'. Next, click the site name that your budgets are for. Next click 'Uncertainty' from the left side of the screen.
To create a new Uncertainty Budget for Weight. Choose your “Measurement Type” from the drop-down and then select “Add Uncertainty Budget”.
To assign a “Technique” select one from the drop-down menu. Once you have entered all the necessary information select “Update Uncertainty Budget”.
You can assign the same technique to more than one uncertainty budget.
Techniques can also be assigned directly to measurements. (ADMINISTRATION MODULE → Service Capabilities → Select service level(s) from the Instrument Category
Then Measurement Forms → Add or Select Measurement to edit.
From Measurements tab select a Measurement, assign a Measurement Technique and click OK.
To apply these updates to your measurements, enter a work order. (SERVICE MODULE → Work Orders → Select Work Order Number → Order Detail View → “Select” to begin working on an Asset).
If you already have an uncertainty budget assigned to your tool then you will be able to select it from the drop-down menu. You can still manually enter the “Measurement Uncertainty” when necessary.
If no uncertainty budgets have been assigned, for the system to calculate measurement uncertainty you will need to enter one manually.
If there are multiple components associated with a budget that are missing from the asset you will be notified to enter these manually.
Lastly, if you have multiple uncertainties linked with one measurement and you are using a tool that does not have an uncertainty budget associated with it, you will be able to choose from one of the budgets.
Once here, select a budget you would like to modify.
Next, click into the 'Uncertainty Component' tab to add or edit the components of this uncertainty budget.
Once in the component, input your formula in the 'Uncertainty Evaluation Formula' field. Utilize the '+' to add in variables to the equation.
Automatically calculate your uncertainty for each measurement taken in the calibration interface by adding and managing uncertainty budgets for each Site. Create an uncertainty budget in Qualer by selecting the measurement type and clicking "Add Uncertainty Budget."
Define the unit of measurement and all other factors by clicking through each tab by filling in the appropriate fields.
Uncertainty budget formulas can use the following operators and variables:
Mathematical operators
Multiply *
Divide /
Add +
Subtract -
Math functions
Pow(x, y) - raise a number "x" to a power "y"
Sqrt(x) - return square root of "x"
Exclusion condition operators
Less than <
Greater than >
Less or equal <=
Greater or equal >=
Equal ==
Not equal !=
Conditional AND &&
Conditional OR ||
Variables
Measurement Point - variable from the current measurement point
@Nominal
@Mean
@Readings
@StdDeviation
@StdError
@ToolAccuracy
@ToolUncertainty
@Error
Different Measurement Point - variable from different measurement point(in square brackets - you can define the name of measurement point)
@Nominal[]
@Mean[]
@Readings[]
@StdDeviation[]
@StdError[]
@ToolAccuracy[]
@ToolUncertainty[]
@Error[]
Environment Factor - environment factor value
@AirBuoyancy
@AirHumidity
@Altitude
@AmbientTemperature
@BarometricPressure
@EvaporationRate
@LightIntensity
@NoiseLevel
@PhLevel
@SolarRadiation
@WaterConductivity
@WaterTemperature
@WindSpeed
@ZFactor
UUT Attribute - value from the unit under test attribute(in square brackets - you can define the name of attribute)
@UUT[]
Tool Attribute - value from reference standard attribute(in square brackets - you can define name attribute)
@Tool[]
Custom Fields - value from the custom field(in square brackets - you can define "Field Id" of custom field)
@CustomField[]