On-line Concentration Measurement of Sulfuric acid - Anton Paar.com
On-line Concentration Measurement of Sulfuric acid - Anton Paar.com
On-line Concentration Measurement of Sulfuric acid - Anton Paar.com
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::: Application Report<br />
<strong>On</strong>-<strong>line</strong> <strong>Concentration</strong> <strong>Measurement</strong> <strong>of</strong><br />
<strong>Sulfuric</strong> <strong>acid</strong> “H2SO4”<br />
Relevant for:<br />
<strong>On</strong><strong>line</strong> concentration measurement <strong>of</strong> H2SO4 and Oleum<br />
Installation<br />
Depending on the requirements the density<br />
and/or sound velocity transducers can be<br />
installed at different sites in the process.<br />
0-90 % w/w<br />
For this application the DPRn sensor must be<br />
made <strong>of</strong> tantalum which shows an excellent<br />
resistance against sulfuric <strong>acid</strong> between 0-75 °C.<br />
For the measurement <strong>of</strong> oleum the DPRn<br />
transducer must be made <strong>of</strong> glass.<br />
DPRn<br />
Fig. 3: Bypass installation <strong>of</strong> the DPRn<br />
mPDS 1100<br />
TEMP+16.14 : °C<br />
PER-D: 2574.976 us<br />
DENS: 1.33317 g/cm3<br />
Ai-curr: 0.160 mA<br />
L<br />
06<br />
ESC<br />
ENTER<br />
mPDS 1100<br />
90-100 % w/w<br />
For H2SO4 concentration in the range <strong>of</strong> 90 to<br />
100 % w/w a gold plated SPRn sound velocity<br />
transducer is used. The gold plated SPRn<br />
transducer is inserted into the <strong>line</strong> using standard<br />
fittings (DIN 2633, DN40 PN16). All wetted parts <strong>of</strong><br />
the transducer are gold plated to prevent corrosion<br />
<strong>of</strong> the transducer material by sulfuric <strong>acid</strong>.<br />
4<br />
SPRn<br />
TEMP+16.14 : °C<br />
Fig. 4: In-<strong>line</strong> installation <strong>of</strong> the SPRn<br />
PER-D: 2574.976 us<br />
DENS: 1.33317 g/cm3<br />
Ai-curr: 0.160 mA<br />
L<br />
06<br />
ESC<br />
ENTER<br />
mPDS 1100<br />
Density or sound velocity and temperature are<br />
transferred to the mPDS 1100 by a two wire cable.<br />
The same cable powers the transducer and it can<br />
be <strong>of</strong> almost any length.<br />
90-110 %w/w<br />
For the measurement range over 100 % the DSRn<br />
sensor which delivers density, sound velocity and<br />
temperature is needed. As evaluation unit the<br />
mPDS 5 have to be connected. Because the<br />
DSRn is only available in Hastelloy the maximum<br />
temperature must not exceed 40 °C!<br />
DSRn<br />
Fig. 5: Bypass installation <strong>of</strong> the DSRn<br />
mPDS 1100