Appendix; Abbreviations And Terms - GEA RedGenium Operating Instruction

Appendix

Abbreviations and terms

14 Appendix
14.1 Abbreviations and terms
Abbreviation Remark
% Figures in percent
° Symbol for the divider of a scale [degrees]
All degrees stand for the angle [angular degree] unless explicitly specified otherwise.
°F Temperature measurement unit [degrees Fahrenheit]
°C Temperature measurement unit [degrees Celsius]
Δp Pressure difference
π Pressure ratio
AISI American Iron and Steel Institute; material designation for the North American professional association for the steel
industry
ATEX Atmosphères Explosibles
Directive of the European Union governing explosion protection
bar Pressure measurement unit [Bar]
CFR Code of Federal Regulations; collection of federal regulations of the USA
CO
Carbon dioxide; chemical molecular formula
2
dB Unit for logarithmic variables such as sound pressure level, voltage level, etc. [Decibel]
DIN German Standard by the Deutsches Institut für Normung e.V. (DIN)
3
Volume measurement unit [cubic decimetre]
dm
DN DN nominal diameter
EC European Community
EN European Standard
EX Explosion protection
h Time measurement unit [hour]
H O
Hydrogen peroxide; chemical molecular formula
2 2
HP High pressure
Hz Frequency measurement unit [Hertz]
IP Protection type for electric operating material
ISO International standard of the International Organization for Standardization
KM HFC Refrigerant - Fluorinated hydrocarbons
KM NH
Refrigerant - Ammonia
3
KM R22 Refrigerant - Chlorodifluormethane
KM R290 Refrigerant - Propane
KM R600a Refrigerant - Isobutane
Lp Sound pressure
Lw Sound power
m/s Speed measurement unit [metre per second]
3 Volume flow measurement unit [cubic metre per second]
m /h
min. Time measurement unit [minute]
Revolutions per minute
rpm
mm Length measurement unit [millimetre]
MPI Interface for Simatic-S7 devices from Siemens [multi-point interface]
μm Length measurement unit [micrometre]
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19.12.2019