SICK DEFOR, Supplementary Operating Instructions, Page: 25 / 30

Technical Data
DEFOR · Supplementary Operating Instructions · 8013029 V2.0 · © SICK AG 25
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5.3
Technical gas specifications
5.3.1
Sample gas
5.3.2
Purge gas
Only valid for version with process cuvette ( → p. 10, §2.2.2 )
5.4
Materials with sample gas contact
Allowable sample gas temperature: [1]
[1] On the sample gas inlet. Keep constant during operation.
– Minimum: 5 °C (41 °F) [2]
[2] When a sample gas cooler is used: Always above the cooler temperature (dew point).
– Maximum: 55 °C (131 °F) [3]
[3] With “heated sample gas path” option: Up to +80 °C, depending on the temperature set.
Allowable sample gas dew point: Below ambient temperature
Particles in the sample gas: Sample gas should be free from dust and aerosols [4]
[4] On the sample gas inlet.
Allowable sample gas pressure [5]
[5] Relative to the ambient/atmospheric air pressure.
–200 … +300 hPa (–0.2 … +0.3 bar)
Sample gas volume flow [1]
– Minimum: 20 l/h (333 cm 3 /min)
– Maximum: 120 l/h (2000 cm 3 /min)
– Recommended: 30 … 60 l/h (500 … 1000 cm 3 /min)
– Standard: 30 l/h (500 cm 3 /min)
Suitable purge gas: Dry inert gas (chemically neutral gas/gas mixture
without condensable components)
Allowable purge gas pressure
[1]
[1] Relative to the ambient/atmospheric air pressure.
15 … _30 hPa
Purge gas volume flow
– Minimum:
20 l/h (333 cm
3
/min)
– Maximum: 100 l/h (167 cm 3 /min)
– Recommended: 20 … 60 l/h (333 … 1000 cm
3
/min)
– Standard: 30 l/h (500 cm 3 /min)
Component Material
Cuvette: Aluminium or stainless steel [1]
[1] Depending on version.
Optical window: CaF
2
or quartz [1]
Synthetics: Viton B, PVDF, PTFE [1]