
7
Notes for the Reader
Abbreviations and Terms
Carry out the following steps: = Start of a set of instructions.
1.
First step in a sequence of operations.
2.
Second step in a sequence of operations.
Result of the previous operation.
The operation is complete, the goal has been achieved.
NOTE
Further useful information.
Abbreviations and Terms
Abbreviation
Explanation
ATEX
ATEX is a widely used synonym for the European Union ATEX directives.
The designation ATEX is derived from the abbreviation of the French ATmos-
phère EXplosive.
BS
British Standard
bar
Unit of measurement of pressure [bar]
All pressure data expressed in [bar/psi] is assumed to be gauge pressure
[bar
g
/psi
g
] unless explicitly specified otherwise.
BSP
British Standard Pipe Thread
approx.
approximately
°C
Unit of measurement of temperature [degree Celsius]
DN
DIN nominal width
DIN
German standard issued by DIN (Deutsches Institut für Normung e.V.,
German Institute for Standardization)
EN
European Standard
°F
Unit of measurement of temperature [degree Fahrenheit]
h
Unit of measurement of time [hour]
ISO
International standard issued by the International Organization for Standardi-
zation
kg
Unit of measurement of weight [kilogram]
l
Unit of measurement of volume [litre]
min.
minimum
max.
maximum
mm
Unit of measurement of length [millimetre]
m
Unit of measurement of length [micrometre]
M
Metric
NPT
National Pipe Thread