#### 7.1.2.4 IfcFlowInstrumentTypeEnum

The IfcFlowInstrumentTypeEnum defines the range of different types of flow instrument that can be specified.

> HISTORY New enumeration in IFC2x2.

Enumerated Item Definitions:

- PRESSUREGAUGE: A device that reads and displays a pressure value at a point or the pressure difference between two points.
- THERMOMETER: A device that reads and displays a temperature value at a point.
- AMMETER: A device that reads and displays the current flow in a circuit.
- FREQUENCYMETER: A device that reads and displays the electrical frequency of an alternating current circuit.
- PHASEANGLEMETER: A device that reads and displays the phase angle of a phase in a polyphase electrical circuit.
- POWERFACTORMETER: A device that reads and displays the power factor of an electrical circuit.
- VOLTMETER_PEAK: A device that reads and displays the peak voltage in an electrical circuit.
- VOLTMETER_RMS: A device that reads and displays the RMS (mean) voltage in an electrical circuit.
- USERDEFINED: User-defined type.
- NOTDEFINED: Undefined type.

XSD Specification:

<xs:simpleType name="IfcFlowInstrumentTypeEnum">
<xs:restriction base="xs:string">
<xs:enumeration value="pressuregauge"/>
<xs:enumeration value="thermometer"/>
<xs:enumeration value="ammeter"/>
<xs:enumeration value="frequencymeter"/>
<xs:enumeration value="powerfactormeter"/>
<xs:enumeration value="phaseanglemeter"/>
<xs:enumeration value="voltmeter_peak"/>
<xs:enumeration value="voltmeter_rms"/>
<xs:enumeration value="userdefined"/>
<xs:enumeration value="notdefined"/>
</xs:restriction>
</xs:simpleType>

EXPRESS Specification:

TYPE IfcFlowInstrumentTypeEnum = ENUMERATION OF (
| PRESSUREGAUGE, THERMOMETER, AMMETER, FREQUENCYMETER, POWERFACTORMETER, PHASEANGLEMETER, VOLTMETER_PEAK, VOLTMETER_RMS, USERDEFINED, NOTDEFINED);
END_TYPE;

EXPRESS-G diagram

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