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User Manual | Laboratory Fume Cupboard | Media system: Armatures
Media system: Armatures
5.1
Marking of armatures
Laboratory armatures must be colour-coded in accordance with DIN EN 13792. The standard does not apply
to medical institutions or hospitals which use medical gases from a medical gas supply system according to
EN737.
Zone 1
Zone 2
Zone 3
The 3 zones are colour-coded. Zone 2 includes the short designation / long text for the flow substance and is a
Wesemann standard.
5.2
Colour-coding Zone 1 and abbreviations
5.2.1
Water
The colour green of Zone 1 indicates that it refers to the flow substance water. Which water it is can be can be
recognized by the colours in Zones 2 and 3.
WCS
Cooling water/Sprinkler water
WPC
Drinking/Potable water, cold
WNH
Process water, hot
WST
Steam/Water vapour
WCH
Ultrapure water, hot
WCR
Cooling water return
WSH
Surface water, hot
WDH
Demineralized water, hot
WRH
River water, hot
WDI
Distilled water
WPH
Drinking/Potable water, hot
WSP
Well water
WNC
Well water, cold
WCO
Condensate
WCC
Ultrapure water, cold
WCF
Cooling water flow
WSC
Surface water, cold
WDC
Demineralized water, cold
WRC
River water, cold
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