flow gauge

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1. Common instrument characters and graphic symbols

Common instrument characters and graphic symbols

1. Variable symbols Common variable symbols are used to represent the physical quantities or states measured by the instrument, such as flow rate, pressure, temperature, etc. Here are some common variable symbols and their meanings: F: Flow, P: Pressure, T: Temperature, L: Level, I: Current, V: Voltage, Q: Quantity, Accumulation, S: Speed, Switch (image display: variable symbol, corresponding image link has been converted to markdown format). Here are some common functional symbols and their meanings: I: Indication R: Recording A: Alarm C: Control T: Transmitter E: Detection S: Switch V: Valve (image display: functional symbol, corresponding image link has been converted to markdown format)

III. Common graphic instrument symbols Graphic instrument symbols are used to visually represent the type and appearance of instruments, such as pressure gauges, flow meters, thermometers, etc. Here are some common graphical instrument symbols and their meanings: Circular with pointer instrument: usually represents a pressure gauge or similar instrument. Wave line graphic: represents a flow meter or similar instrument. Thermometer graphic: represents a thermometer or similar instrument. Rectangular graduated graphic: represents an electrical signal indicator or similar instrument. Valve graphics: represent various valves, such as globe valves, regulating valves, etc. (Image display: Common graphic instrument symbols, corresponding image links have been converted to markdown format)

IV. Tag introduction Tag numbers are usually composed of letters and numbers, used to uniquely identify instruments or equipmen

t. Here are some common tags and their meanings: YAL: accident low level alarm (Y refers to accident status, A refers to alarm, L refers to low level). FIQR: Flow indication, accumulation, recording (F refers to flow, I is indication, Q is accumulation, R is recording). FT: Flow transmitter (F refers to flow, T refers to transmitter). FE: Flow detection element (F refers to flow, E refers to detection element). PI: Pressure indication. LCV: Liquid Level Control Valve. LS: Liquid level switch. FIQ: Flow indication, accumulation. LA: Liquid level alarm. RSV (note: The R in RSV may vary depending on the context, but here as an example, it is assumed to be an abbreviation for a special valve): Special valves (such as nuclear radiation switch valves, but the specific meaning depends on the context).

V. Letter Symbols for Instruments The letter symbols for instruments are used to indicate the type or functional characteristics of the instrument.

. Here are some common instrument letter symbols and their meanings: A: Analysis, Alarm. B: Burning. C: Counting, Control. D: Density. E: Voltage, Detection. F: Traffic (Flow). G: Measure (Gauge). H: Manual (Hand). I: Current, indication. J: Power Supply. K: Time (Time). L: Location, Low. M: Moisture. P: Pressure. Q: Quantity. R: Radiation, recording. S: Speed, Switch. T: Temperature, transmitter. U: Multivariate, multifunctional. V: Vibration, Valve. W: Weight. Y: Yard State. Z: Location (when different from L), Size. These characters and graphic symbols have a wide range of applications in the instrumentation industry and are indispensable tools for engineers and technicians in instrument selection, installation, debugging, and maintenance.

1. Common instrument characters and graphic symbols

2. Meaning of flow gauge<

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