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228 UDA2182 Universal Dual Analyzer Product Manual January 2009
9. Return probe to flow chamber and resume nitrogen sparging.
10.
When analyzer indicates that DO level is below 20 ppb, change gas to 250 ppm O
2
in
nitrogen. Run until equilibrated (4-6 hours). After equalization, note barometric
pressure and temperature.
11. Compare reading with calculated value.
To Calculate True Value
*Air Sat. Value at T °C x known gas O
2
Value x Barometric Pressure = True Value
20.9% 760 mmHg
Example Calculation
At 25°C using 250 ppm O
2
in N
2
at 770 mm Hg
True Value = 8.24 x 10
-6
x 250 x 10
-6
x 770 = 9.986 x 10
-9
or 10 ppb
20.9 x 10
-2
760
* If the temperature of the process water is not at 25°C, use O
2
Solubility Tables in Table
15-2 and the process water temperature to determine the Air Saturated O
2
value.
Regulator
Oxygen
in
Nitrogen
Valve
Wash Bottle
Beaker
for Venting
Oxygen Probe
Model DL5PPB
Honeywell Model 2182
Universal Dual Analyzer
Flow Through
Chamber
#31063336
Note 1
Note 2
Note 3
Special Requirements:
Note 1:Gas Mixture is Oxygen in Nitrogen -useGravametricGases analyzed
to +/-1% of contained gas. Get Certificates of Conformance and Analysis on the
purchased gas.
Note 2:
Dual Stage, Ultra high purity, high flow pressure regulator -
non-corrosive surface. Try to get this from the gas supplier to be consistent with
their recommended setup. Example supplier - Scott Model-18 Series.
Note 3:
Glass Gas Washing bottles with fritted disc and beaker. Gas bottle should
be filled 3/4 with water. Example supplier -Fisher, Cole Palmer
Note 4:
Piping around glass wash bottle should be heavy wall flexible plastic. Piping
that goes into beaker should be submerged about 1/2” into beakerof water.
Note 5:
All other piping should be rigid polypropylene tubing.
Note 6:
All calculations are based on 25 Deg C.
Note 5
Rigid Piping
1/ 2”
Note 4
Note 4
Flexible
Piping
Regulator
Oxygen
in
Nitrogen
Oxygen
in
Nitrogen
Valve
Wash Bottle
Beaker
for Venting
Dissolved
Honeywell Model 2182
Universal Dual Analyzer
Flow Through
Chamber
#31063336 or
#31063337
Note 1
Note 2
Note 3
Special Requirements:
Note 1:Gas Mixture is Oxygen in Nitrogen -useGravametricGases analyzed
to +/-1% of contained gas. Get Certificates of Conformance and Analysis on the
purchased gas.
Note 2:
Dual Stage, Ultra high purity, high flow pressure regulator -
non-corrosive surface. Try to get this from the gas supplier to be consistent with
their recommended setup. Example supplier - Scott Model-18 Series.
Note 3:
Glass Gas Washing bottles with fritted disc and beaker. Gas bottle should
be filled 3/4 with water. Example supplier -Fisher, Cole Palmer
Note 4:
Piping around glass wash bottle should be heavy wall flexible plastic. Piping
that goes into beaker should be submerged about 1/2” into beakerof water.
Note 5:
All other piping should be rigid polypropylene tubing.
Note 6:
All calculations are based on 25 Deg C.
Note 5
Rigid Piping
1/ 2”
Note 4
Note 4
Flexible
Piping
Regulator
Oxygen
in
Nitrogen
Oxygen
in
Nitrogen
Valve
Wash Bottle
Beaker
for Venting
Oxygen Probe
Model DL5PPB
Honeywell Model 2182
Universal Dual Analyzer
Flow Through
Chamber
#31063336
Note 1
Note 2
Note 3
Special Requirements:
Note 1:Gas Mixture is Oxygen in Nitrogen -useGravametricGases analyzed
to +/-1% of contained gas. Get Certificates of Conformance and Analysis on the
purchased gas.
Note 2:
Dual Stage, Ultra high purity, high flow pressure regulator -
non-corrosive surface. Try to get this from the gas supplier to be consistent with
their recommended setup. Example supplier - Scott Model-18 Series.
Note 3:
Glass Gas Washing bottles with fritted disc and beaker. Gas bottle should
be filled 3/4 with water. Example supplier -Fisher, Cole Palmer
Note 4:
Piping around glass wash bottle should be heavy wall flexible plastic. Piping
that goes into beaker should be submerged about 1/2” into beakerof water.
Note 5:
All other piping should be rigid polypropylene tubing.
Note 6:
All calculations are based on 25 Deg C.
Note 5
Rigid Piping
1/ 2”
Note 4
Note 4
Flexible
Piping
Regulator
Oxygen
in
Nitrogen
Oxygen
in
Nitrogen
Valve
Wash Bottle
Beaker
for Venting
Dissolved
Honeywell Model 2182
Universal Dual Analyzer
Flow Through
Chamber
#31063336 or
#31063337
Note 1
Note 2
Note 3
Special Requirements:
Note 1:Gas Mixture is Oxygen in Nitrogen -useGravametricGases analyzed
to +/-1% of contained gas. Get Certificates of Conformance and Analysis on the
purchased gas.
Note 2:
Dual Stage, Ultra high purity, high flow pressure regulator -
non-corrosive surface. Try to get this from the gas supplier to be consistent with
their recommended setup. Example supplier - Scott Model-18 Series.
Note 3:
Glass Gas Washing bottles with fritted disc and beaker. Gas bottle should
be filled 3/4 with water. Example supplier -Fisher, Cole Palmer
Note 4:
Piping around glass wash bottle should be heavy wall flexible plastic. Piping
that goes into beaker should be submerged about 1/2” into beakerof water.
Note 5:
All other piping should be rigid polypropylene tubing.
Note 6:
All calculations are based on 25 Deg C.
Note 5
Rigid Piping
1/ 2”
Note 4
Note 4
Flexible
Piping
Note 1
Note 2
Note 3
Special Requirements:
Note 1:Gas Mixture is Oxygen in Nitrogen -useGravametricGases analyzed
to +/-1% of contained gas. Get Certificates of Conformance and Analysis on the
purchased gas.
Note 2:
Dual Stage, Ultra high purity, high flow pressure regulator -
non-corrosive surface. Try to get this from the gas supplier to be consistent with
their recommended setup. Example supplier - Scott Model-18 Series.
Note 3:
Glass Gas Washing bottles with fritted disc and beaker. Gas bottle should
be filled 3/4 with water. Example supplier -Fisher, Cole Palmer
Note 4:
Piping around glass wash bottle should be heavy wall flexible plastic. Piping
that goes into beaker should be submerged about 1/2” into beakerof water.
Note 5:
All other piping should be rigid polypropylene tubing.
Note 6:
All calculations are based on 25 Deg C.
Note 5
Rigid Piping
1/ 2”
Note 4
Note 4
Flexible
Piping
Figure 15-7 Suggested ppb Dissolved Oxygen Test Set-up