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 |