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    Alicat engineering units

    Most Alicat mass flow and pressure instruments have user-selectable engineering units. Below is a list of all engineering units for pressure, flow, and temperature.

    Alicat pressure controllers and transducers have dedicated pressure sensors that are referenced to absolute, gauge, or differential pressure. Engineering units may be changed within these pressure types, but the reference may not be changed (e.g., from absolute to gauge).

    Most Alicat mass flow meters and controllers display absolute pressure only, but battery-powered models (e.g., MB, MWB, FP-25) use their integrated barometers to display gauge pressure as well. Barometer readings for these instruments are in units of absolute pressure.

    Pressure engineering units
    Absolute Gauge Differential Notes
    PaA PaG PaD pascal
    hPaA hPaG hPaD hectopascal
    kPaA kPaG kPaD kilopascal
    MPaA MPaG MPaD megapascal
    mbarA mbarG mbarD millibar
    barA barG barD bar
    g/cm2A g/cm2G g/cm2D gram force per square centimeter
    kg/cmA kg/cmG kg/cmD kilogram force per square centimeter
    PSIA PSIG PSID pound force per square inch
    PSFA PSFG PSFD pound force per square foot
    mTorrA mTorrG mTorrD millitorr
    torrA torrG torrD torr
    mmHgA mmHgG mmHgD millimeter of mercury at 0 C
    inHgA inHgG inHgD inch of mercury at 0 C
    mmH2OA mmH2OG mmH2OD millimeter of water at 4 C (NIST conventional)
    mmH2OA mmH2OG mmH2OD millimeter of water at 60 C
    cmH2OA cmH2OG cmH2OD centimeter of water at 4 C (NIST conventional)
    cmH2OA cmH2OG cmH2OD centimeter of water at 60 C
    inH2OA inH2OG inH2OD inch of water at 4 C (NIST conventional)
    inH2OA inH2OG inH2OD inch of water at 60 C
    atm atmosphere
    m asl meter above sea level (only in /ALT builds)
    ft asl foot above sea level (only in /ALT builds)
    V volt; no conversions are performed to or from other units
    count count count setpoint count, 0 – 64000
    % % % percent of full scale
    Flow rate engineering units
    Volumetric Standard Normal Notes
    uL/m SuL/m NuL/m microliter per minute
    mL/s SmL/s NmL/s milliliter per second
    mL/m SmL/m NmL/m milliliter per minute
    mL/h Sml/h NmL/h milliliter per hour
    L/s SL/s NL/s liter per second
    LPM SLPM NLPM liter per minute
    L/h SL/h NL/h liter per hour
    US GPM US gallon per minute
    US GPH US gallon per hour
    CCS SCCS NCCS cubic centimeter per second
    CCM SCCM NCCM cubic centimeter per minute
    cm3/h Scm3/h Ncm3/h cubic centimeter per hour
    m3/m Sm3/m Nm3/m cubic meter per minute
    m3/h Sm3/h Nm3/h cubic meter per hour
    m3/d Sm3/d Nm3/d cubic meter per day
    CIM SCIM cubic inch per minute
    CFM SCFM cubic foot per minute
    CFH SCFH cubic foot per hour
    kSCFM 1000 cubic feet per minute
    count count count setpoint count, 0 – 64000
    % % % percent of full scale

     

    True mass flow engineering units
    mg/s milligram per second
    mg/m milligram per minute
    g/s gram per second
    g/m gram per minute
    g/h gram per hour
    kg/m kilogram per minute
    kg/h kilogram per hour
    oz/s ounce per second
    lb/m pound per minute
    lb/h pound per hour
    Totalized flow engineering units
    Volumetric Standard Normal Notes
    uL SuL NuL microliter
    mL SmL NmL milliliter
    L SL NL liter
    US gal US gallon
    cm3 Scm3 Ncm3 cubic centimeter
    m3 Sm3 Nm3 cubic meter
    in3 Sin3 cubic inch
    ft3 Sft3 cubic foot
    kSft3 1000 cubic feet
    uP micropoise, a measure of viscosity; no conversions are performed to or from other units
    Total mass engineering units
    mg milligram
    g gram
    kg kilogram
    lb pound
    Totalizer time units

    (Displayed value is hours:minutes:seconds.)

    Label Notes
    ms millisecond
    s second
    m minute
    hour hour
    day day
    Temperature engineering enits
    Label Notes
    °C degree Celsius
    °F degree Farenheit
    K degree Kelvin
    °R degree Rankine
    Valve drive engineering units
    Label Notes
    count +/- 65536 at full drive
    % percent of full scale drive
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