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Emerson Process Management GmbH & Co. OHG 3-7
X-STREAM X2
Instruction Manual
HASX2E-IM-HS
02/2012
3
Measuring Principles
3.2 Oxygen Measurement
Tab. 3-2: Solvent resistant paramagnetic sensor -
approved solvents
Tab. 3-3: Solvent resistant paramagnetic sensor -
medium affected materials
Applications With Corrosive Or Solvent Components
Special paramagnetic oxygen sensors are
available to measure gases, containing cor-
rosive or solvent components.
See below tables for further information on
approved solvents, and medium affected
materials.
Approved solvents
(inclusive accompanying
disturbing components)
Acetic acid Heptane
Acetone Hexane
Acrolein Isopropanol
Aromatics Methanol
Butadiene Methyl acetate
Butadiene-1 Methylethylketone
Butadiene-2 Methylmercaptane
C2H2 Propadiene
C4H8 Propene
C5 Propylen oxide
C6H12 Propylene
CH3COOH Toluene
Cyclohexane Vinyl acetate
Cyclohexanon Vinyl acetylene
Dimethyl sulde Xylene
Ethanol i-Butyr acid
Ethene i-Butyr aldehyd
Ethylene i-Propylformiat
Ethylene oxid n-Butane
Conditions
• Single or summarized concentrations
do not exceed 20 %
• Gas passes gas cooler prior to entering
the analyzer
• Gas dew point at max. 5 °C
Solvent resistant sensors have limited
lifetime and are consumables!
Component
Measuring cell type
Solvent resistant
Corrosion resistant
(Chlorine, dry)
Case SS 1.4572 SS 1.4573
Pole nucleus Tantalum
Mirror Glass, Rhodium
Tension band Platinum alloy
Loop wire Platinum alloy
Supporting
wire
Platinum alloy
Cylinder Glass
Cylinder
bushing
Ceramics
Dumbbell Glass
Taring Epoxy Epoxy
Compound
material
Plumb bob, Epoxy Epoxy
Seals Kalrez Kalrez
Another variation of measuring cell has the
following materials in contact with the sample:
A316 stainless steel, viton ‘O’ ring, boro-
silicate glass, electroless nickel, platinum,
platinum/iridium alloy.
For the solvent resistant version of this cell,
the ‘O’ ring made of viton is replaced by a
chemraz
®
model.