7 OPC UA ObjectTypes ToC Previous Next

7.22 FluidQuantitiesType ObjectType Definition ToC Previous Next

The FluidQuantitiesType provides Variables and Objects for fluid Quantities and is formally defined in Table 47.

Table 47 – FluidQuantitiesType Definition

Attribute Value        
BrowseName FluidQuantitiesType        
IsAbstract False        
References Node Class BrowseName DataType TypeDefinition Other
Subtype of the 0:BaseObjectType defined in OPC 10000-5.          
0:HasInterface ObjectType 3:IStatisticsType Defined in OPC 10000-200    
           
0:HasComponent Variable <Quantity> 0:Number 0:BaseAnalogType OP, RO
0:HasComponent Variable AbsolutePressure 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable AccumulatedVolume 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable DewPoint 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable GaugePressure 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable MassFlowRate 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable OilConcentration 0:Double 0:BaseAnalogType O, RO
0:HasComponent Object ParticlesPerSizeRange   ParticleType O
0:HasComponent Variable RelativeHumidity 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable Temperature 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable Volume 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable VolumeFlowRate 0:Double 0:BaseAnalogType O, RO
           
Applied from 3:IStatisticsType          
0:HasComponent Method 3:ResetStatistics See 3:IStatisticsType O  
0:HasProperty Variable 3:StartTime 0:DateTime 0:PropertyType O, RO

The Variable StartTime and the Method ResetStatistics are defined by the IStatisticsType and shall be used as defined by the Interface.

The OptionalPlaceholder <Quantity> is used to add additional Quantities to this group. In this case the abstract DataType 0:Number must be changed to a non-abstract DataType. The TypeDefinition may be chosen from BaseAnalogType and its subtypes.

The InstanceDeclarations of the FluidQuantitiesType have additional Attributes defined in Table 48.

Table 48 – FluidQuantitiesType Attribute values for child Nodes

Source Path Value Attribute Description Attribute
<Quantity>   Manufacturer or system specific measurements or calculations.
AbsolutePressure   Measured or calculated actual absolute pressure of a fluid.
AccumulatedVolume   Measured or calculated accumulated volume of a fluid since last reset.
DewPoint   Measured or calculated actual dew point of a fluid.
GaugePressure   Measured or calculated actual gauge pressure of a fluid.
MassFlowRate   Measured or calculated actual mass flow rate of a fluid.
OilConcentration   Measured or calculated actual oil concentration of a fluid.
ParticlesPerSizeRange   Collection of particle counts for a fluid according to ISO 8573.
RelativeHumidity   Measured or calculated actual relative humidity of a fluid.
Temperature   Measured or calculated actual temperature of a fluid.
Volume   Measured or calculated actual volume of a fluid.
VolumeFlowRate   Measured or calculated actual volume flow rate of a fluid.

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