Industry Abbreviations

A Amperes
A/C Air Conditioning
ABS Acrylonitrile-Butadiene-Styrene
amp Amperes
AsH3 Arsine
ASHRAE American Society of Heating, Refrigerating and Air-Conditioning Engineers
avg Average
BACnet® Building Automation and Control Networking
BMS Building Management System
BTL BACnet® Testing Laboratories
BTU British Thermal Unit
C Celsius
C2H4 Ethylene
CAT Catalytic
CH2O Formaldehyde
CH4 Methane
CE Communaute Europeenne
CEF Calibration Extending Firmware
CET Critical Environment Technologies (Canada Incorporated)
CETCI Critical Environment Technologies Canada Incorporated
cfm Cubic Feet Per Minute
Cl2 Chlorine
ClO2 Chlorine Dioxide
cm Centimeters
CO Carbon Monoxide
CO2 Carbon Dioxide
COCl2 Phosgene
CSA Canadian Standards Associaation
DC Direct Current
DDC Direct Digital Controller
EC Electrochemical
EEPROM Electrically Erasable Programmable Read Only Memory
EMC Electromagnetic Compatibility
EN European Norm
ETO Ethylene Oxide
EU European Union
F Fahrenheit
F2 Fluorine
g Grams
GB Gigabyte
H2 Hydrogen
H2S Hydrogen Sulphide
HCHO Formaldehyde
HCN Hydrogen Cyanide
HE High Efficiency
HEPA High Efficiency Particulate Air
HF Hydrogen Fluoride
HPU Heat Pump Unit
HVAC Heating, Ventilation, and Air Conditioning
Hz Hertz
IAQ Indoor Air Quality
IP Internet Protocol or Ingress Protection
IR Infrared
kg Kilograms
lbs Pounds
LCD Liquid Crystal Display
LED Light Emitting Diode
LEL Lower Explosive Limit
LGA Landfill Gas Analyzer
LPM Liters Per Minute
m Meters
mA Milliamperes
max Maximum
MB Megabyte
ME Medium Efficiency
MERV Minimum Efficiency Reporting Value
min Minimum
mm Millimeters
MS / TP Master-Slave / Token-Passing
N2H4 Hydrazine
N2O Nitrious Oxide
NDIR Non-Dispersive Infrared
NEC National Electric Code
NEMA National Electrical Manufacturers Association
NFPA National Fire Protection Agency
NH3 Ammonia
NiMH Nickel-Metal Hydride
NIOSH National Institute of Occupational Safety and Health
NO2 Nitrogen Dioxide
NOx Nitrogen Oxides
NTC Negative Temperature Coefficient
O2 Oxygen
O3 Ozone
PH3 Phosphine
PID PhotoIonization Detector
PPM / ppm Parts Per Million
psi Pounds Per Square Inch
PVC Polyvinyl Chloride
QA Quality Assurance
REL Recommended Exposure Limit
RH Relative Humidity
SiH4 Silane
SPDT Single Pole, Double Throw
SO2 Sulfur Dioxide
SS Solid State
SSM Smart Sensor Module
STEL Short Term Exposure Limit
TLV Threshold Limit Value
TVOC Total Volative Organic Compound
TWA Time Weighted Average
UL Underwriters Laboratories Inc.
USB Universal Serial Bus
V Volts
VA Volt-Ampere
VAC Volts Alternating Current
VDC Volts Direct Current
VOC Volatile Organic Compound
W Watts
WWC Wired Wireless Controller
ZEB Zero Energy Building