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7.50 InletConnectionMeasurementsType ObjectType Definition ToC Previous Next

The InletConnectionMeasurementsType provides Variables used for measurements performed at a Pump inlet connection and is formally defined in Table 109. For the generation of events, the InletConnectionMeasurementsType has a reference to the 0:LimitAlarmType. The InputNode Property of the Alarm shall contain the NodeId of the Component. Measurements defined in this ObjectType have an additional Subcomponent with the TypeDefinition 0:PropertyType and the BrowseName KindOfQuantity defined in Table 110. In this Variables the measurements can be matched to a physical quantity. To comply with this Companion Specification, the default values for the Property 0:EngineeringUnits and the Property KindOfQuantity provided in Table 111 should be used. The values should be sensible to the use of the application.

Table 109 – InletConnectionMeasurementsType Definition

Attribute Value        
BrowseName InletConnectionMeasurementsType        
IsAbstract False        
References Node Class BrowseName DataType TypeDefinition Other
Subtype of the 2:FunctionalGroupType defined in OPC 10000-100, i.e. inheriting the InstanceDeclarations of that Node.          
0:HasComponent Variable InletTemperatureOfThePump 0:Double 0:BaseAnalogType O, RO
0:HasComponent Variable MeanVelocityAtInlet 0:Double 0:BaseAnalogType O, RO
0:GeneratesEvent ObjectType 0:LimitAlarmType Defined in OPC 10000-9    

Table 110 – InletConnectionMeasurementsType Additional Subcomponents

Source Path References NodeClass BrowseName DataType TypeDefinition Other
InletTemperatureOfThePump 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO
MeanVelocityAtInlet 0:HasProperty Variable KindOfQuantity 0:String 0:PropertyType O, RO

The InstanceDeclarations of the InletConnectionMeasurementsType have additional Attributes defined in Table 111. The Variables and the associated Descriptions are based on the standard DIN EN ISO 17769-1.

Table 111 – InletConnectionMeasurementsType Attribute values for child Nodes

BrowsePath Value Attribute Description Attribute
InletTemperatureOfThePump   Measured temperature acting at the inlet area of the pump.
   InletTemperatureOfThePump
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 4932940
DisplayName: K
Description: kelvin
 
   InletTemperatureOfThePump
   KindOfQuantity
“temperature” Quantity representing a temperature value
MeanVelocityAtInlet   Measured rate of flow at pump inlet connection divided by the inlet area of the pump.
   MeanVelocityAtInlet
   0:EngineeringUnits
NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact
UnitId: 5067859
DisplayName: m/s
Description: metre per second
 
   MeanVelocityAtInlet
   KindOfQuantity
“velocity” Vector quantity giving the rate of change of a position vector

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