『Flow meter graphic symbols』Related information(clamp on meter|electromagnetic meter|venturi meterrotameter|orifice meter|ultrasonic flow meter|mass flow meter|coriolis mass flow meter|coriolis flow meter|magnetic flow meter|magmeter flow meter|magflow flow meter|mag meter flow meter|electromagnetic flow meter|vortex flow meter|turbine flow meter|thermal mass flow meter|thermal flow meter|rotameter flow meter)
1. What are the standard symbols for flow meters in PID diagrams?
In P&ID (Piping and Instrument Diagram), different types of flow meters have their own unique standard symbols, and common ones are as follows:
Sakura liquid, labeled with instrument tag number on the side, measures the flow rate of conductive liquid based on Faraday electromagnetic induction principle
4 Vortex flowmeter: The standard symbol is a circle with a vortex pattern, and the instrument tag number is marked on the side. The flow rate is calculated by detecting the vortex frequency generated by the fluid flowing through the blocking fluid.
2. Commonly used instrument characters and graphic symbols
Commonly used instrument characters and graphic symbols
1. Variable symbols Commonly used variable symbols are used to represent the physical quantities or states measured by the instrument, such as temperature, pressure, flow rate, etc. Here are some common variable symbols and their meanings: T: temperature P: pressure F: flow L: liquid level or position I: current V: voltage Q: quantity or cumulative quantity S: speed or switch status H: manual control or height A: alarm status Y: accident status
2. Function symbols Function symbols are used to describe the functions or operating modes of instruments, such as indication, recording, control, etc. Here are some common functional symbols and their meanings: I: Indicator, indicating that the instrument is used to display measured values. R: Record, indicating that the instrument has the function of recording measurement values. C: Control refers to the instrument used to control a certain parameter in the system. A: Alarm, indicating that the instrument will
III. Common graphic instrument symbols Graphic instrument symbols are used to visually represent the type and purpose of instruments.
. Here are some common graphical instrument symbols and their meanings: Circular instrument: usually represents measuring instruments such as pressure gauges, thermometers, etc. Rectangular instrument: may represent instruments with cumbersome functions such as controllers and recorders. Flow meter symbol: usually has a specific streamline shape, used to represent a flow meter. Level gauge symbol: usually has graphical elements representing the liquid level, such as wavy lines or liquid level. Switch symbol: used to represent control components such as switches and valves.IV. Tag Introduction Tag is a code composed of letters and numbers, used to uniquely identify a component in an instrument or control system.
. Here are some common tag numbers and their meanings: YAL: Accident Low Level Alarm, which indicates monitoring the low level and issuing an alarm in the event of an accident. FIQR: Flow indication, accumulation, recording, indicating that the instrument is used to measure flow and has indication, accumulation, and recording functions. FT: Flow transmitter, indicating that the instrument is used to measure flow and convert the measured value into a standard signal output. FE: Flow detection component, indicating that the instrument is only used to detect flow and does not directly display or record data. PI: Pressure indication, indicating that the instrument is
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