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Calculated error limits for heat meter flow measurement testing, ver. 2.17.705

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This commit is contained in:
Milan Hanajik
2017-10-18 10:52:15 +02:00
parent 21a329b1d3
commit 3822c6f5ab
15 changed files with 492 additions and 252 deletions
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Results/Entities/TestRslt.cs
+49 -2
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@@ -118,8 +118,55 @@ namespace Results.Entities
public virtual double TargetVolume() { return TestData.TargetVolume; }
public virtual double TargetTime() { return TestData.TargetTime; }
public virtual string Method() { return TestData.Method; }
public virtual double ErrLimLo() { return TestData.ErrLimLo; }
public virtual double ErrLimHi() { return TestData.ErrLimHi; }
public virtual double ErrLimLo()
{
if (TestData.ErrLimLo <= TestData.ErrLimHi)
{
return TestData.ErrLimLo; /// Error limit of a water meter
}
else
{
/// Metrological class and nominal flow of a heat meter
int metrClass = (int)Math.Round(TestData.ErrLimLo);
double Qp = Math.Abs(TestData.ErrLimHi);
double Q = Math.Max(FlowMean, 0.00001); /// to avoid division by zero
/// Calculate the error limit of a heat meter
switch (metrClass)
{
default:
case 1: return -Math.Min(3.5, 1.0 + 0.01 * Qp / Q);
case 2: return -Math.Min(5.0, 2.0 + 0.02 * Qp / Q);
case 3: return -Math.Min(5.0, 3.0 + 0.05 * Qp / Q);
}
}
}
public virtual double ErrLimHi()
{
if (TestData.ErrLimLo <= TestData.ErrLimHi)
{
return TestData.ErrLimHi; /// Error limit of a water meter
}
else
{
/// Metrological class and nominal flow of a heat meter
int metrClass = (int)Math.Round(TestData.ErrLimLo);
double Qp = Math.Abs(TestData.ErrLimHi);
double Q = Math.Max(FlowMean, 0.00001); /// to avoid division by zero
/// Calculate the error limit of a heat meter
switch (metrClass)
{
default:
case 1: return +Math.Min(3.5, 1.0 + 0.01 * Qp / Q);
case 2: return +Math.Min(5.0, 2.0 + 0.02 * Qp / Q);
case 3: return +Math.Min(5.0, 3.0 + 0.05 * Qp / Q);
}
}
}
public virtual double Uncertainty() { return TestData.Uncertainty; }
public virtual float TempLimLo() { return TestData.TempLimLo; }
public virtual float TempLimHi() { return TestData.TempLimHi; }