APPENDIX B: Acronyms and Abbreviations
Table 59 Acronyms and Abbreviations
| Acronym | Meaning |
|---|---|
| ' | feet |
| " | inches |
| ° | degrees |
| ╜ | enter |
| A | Amperes, Amps |
| A/D | analog/digital |
| AC | alternating current |
| ALQ™ | Advanced Leak Quantification |
| ASCII | American Standard Code for Information Interchange |
| AWG | American Wire Gauge |
| C | Centigrade |
| ccm | cubic centimeters (also see cm3) |
| CFC | chlorofluorocarbon |
| cm | centimeter |
| cm3 | cubic centimeters (also see ccm) |
| COM | common (a relay terminal), communications (COM port) |
| CR | carriage return |
| DC | Direct current |
| dd | day |
| DigiPot | digital potentiometer |
| ENT | enter |
| ESC | escape |
| ESD | electrostatic discharge |
| F | Fahrenheit |
| ft | feet |
| g | gram |
| HCFC | hydrochlorofluorocarbon |
| HFC | hydrofluorocarbon |
| Hz | Hertz |
| i | information |
| in | inch |
| IR | infrared |
| lb | pound |
| LCD | liquid crystal display |
| LED | light emitting diode |
| LEL | lower explosive limit |
| LF | line feed |
| LOK | locked |
| m | meter |
| mA | milliamp, milliampere |
| mL | milliliter |
| mm | millimeter, month |
| NC | normally closed |
| NDIR | Non-dispersive Infrared |
| NIST | National Institute of Standards and Technology |
| NO | normally open |
| oz | ounce |
| P/N | part number |
| Pa | Pascal |
| PC | personal computer |
| ppm | parts per million |
| psia | pounds per square inch – absolute (including atmospheric pressure) |
| rev | revision |
| RS-232 | recommended standard 232 |
| SCCM | standard cubic centimeters per minute |
| SPDT | single pole double throw |
| SRCH | search |
| UL | Underwriters Laboratories |
| USB | universal serial bus |
| V | Volts |
| VAC | Volts alternating current |
| VDC | Volts direct current |
| vol | volume |
| yr, yy | year |