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
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Attribute |
Value |
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BrowseName |
InletConnectionMeasurementsType |
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IsAbstract |
False |
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References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
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Subtype of the 2:FunctionalGroupType defined in OPC 10000-100, i.e. inheriting the InstanceDeclarations of that Node. |
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0:HasComponent |
Variable |
InletTemperatureOfThePump |
0:Double |
0:BaseAnalogType |
O, RO |
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0:HasComponent |
Variable |
MeanVelocityAtInlet |
0:Double |
0:BaseAnalogType |
O, RO |
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0:GeneratesEvent |
ObjectType |
0:LimitAlarmType |
Defined in OPC 10000-9 |
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Table 110 – InletConnectionMeasurementsType Additional Subcomponents
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Source Path |
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
Other |
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InletTemperatureOfThePump |
0:HasProperty |
Variable |
KindOfQuantity |
0:String |
0:PropertyType |
O, RO |
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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
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BrowsePath |
Value Attribute |
Description Attribute |
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InletTemperatureOfThePump |
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Measured temperature acting at the inlet area of the pump. |
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NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 4932940 DisplayName: K Description: kelvin |
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“temperature” |
Quantity representing a temperature value |
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MeanVelocityAtInlet |
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Measured rate of flow at pump inlet connection divided by the inlet area of the pump. |
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NamespaceUri: http://www.opcfoundation.org/UA/units/un/cefact UnitId: 5067859 DisplayName: m/s Description: metre per second |
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“velocity” |
Vector quantity giving the rate of change of a position vector |