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specifications...
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Operating Procedure
The user fills the sample chamber with 30 -
100 ml of sample, defines the sample in a
simple dialog box, selects the desired experiment protocol, and clicks on
"RUN".
When the measurement is complete, the user empties the sample, and then rinses the system with water
or suitable cleaning solution. |
Available Options
Automatic Titration with 1or 2
burettes
pH / Temperature measurement
Conductivity measurement
Circulating pump for very viscous samples
Ports for remote/"on-line" measurements
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Measurement Specifications
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Sample Requirements
|
Model
DT1200
Both particle size & zp |
Model
DT-100
Particle size only |
Model
DT-200
Zeta Potential only |
Model DT-300
Zeta Potential Probe |
Model DT-400
Automatic
Titrator |
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Sample Volume Range |
20-110 ml
|
20-70 ml
|
20-40 ml
|
2-100
ml
|
100
ml |
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Volume Fraction %
(1) |
0.1-50 |
0.1-50
|
0.1-50
|
0.1-50
|
must
be stirred |
|
Conductivity
(2) |
no
restriction |
no restriction
|
no
restriction |
no
restrictions |
no
restriction |
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pH |
0.5-13.5 |
0.5-13.5 |
0.5-13.5 |
0.5-13.5 |
0.5-13.5 |
| Temperature
[degree C] |
below
50 |
below
50 |
below
50 |
below
50 |
below
100 |
|
Viscosity of media [cp] |
to 20,000
|
to 20,000
|
to 20,000
|
to 20,000
|
to 20,000
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Microviscosity of media [cp] (3) |
to 100
|
to 100
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to 100
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to 100
|
to 100
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Viscosity of colloid
(4) |
to 20,000
|
to 20,000
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to 20,000
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to 20,000
|
to 20,000
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| Particle size
[microns] (5) |
0.005
to 1000 |
0.005
to 1000 |
<
100 |
<
100 |
no
restrictions |
|
Zeta potential |
no
restrictions |
no
restrictions |
no
restrictions |
no
restrictions |
no
restrictions |
| Measured
Parameters |
| Temperature
[degree C] |
0
to 100,+ -0.1 |
0
to 100,+ -0.1 |
0
to 100,+ -0.1 |
0
to 100,+ -0.1 |
0
to 100,+ -0.1 |
|
pH |
0.5-13.5,+
-0.1 |
0.5-13.5,+
-0.1 |
0.5-13.5,+
-0.1 |
0.5-13.5,+
-0.1 |
0.5-13.5,+
-0.1 |
| Frequency
Range [MHz] |
1-100 |
1-100 |
1-10 |
1-10 |
N/A |
| Acoustic
Attenuation [dB/cm MHz] |
0
to 20 + -0.01 |
0
to 20 + -0.01 |
N/A |
N/A |
N/A |
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Sound Speed [m/sec] |
|
500
to 3000, + - 0.1 |
N/A |
N/A |
N/A |
| Electroacoustic
signal |
+
- 1% |
N/A |
+
- 1% |
+
- 1% |
N/A |
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Conductivity |
0.0001-10,
+ -1% |
0.0001-10,
+ -1% |
0.0001-10,
+ -1% |
0.0001-10,
+ -1% |
0.0001-10,
+ -1% |
| Calculated Parameters |
|
Mean size
[microns] |
0.005
to 1000 |
0.005
to 1000 |
N/A |
N/A |
N/A |
| Unimodal parameters |
Yes |
Yes |
N/A |
N/A |
N/A |
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Bimodal parameters |
Yes |
Yes |
N/A |
N/A |
N/A |
|
Zeta Potential |
+
-(0.5% +0.1) |
N/A |
+
-(0.5% +0.1) |
+
-(0.5% +0.1) |
N/A |
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Measurement time [min]
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| Particle
size |
1-10 |
1-10 |
N/A |
N/A |
N/A |
| Zeta
Potential in aqueous system |
0.5 |
N/A |
0.5 |
0.5 |
N/A |
| Zeta
Potential in non-aqueous system |
0.5-5 |
N/A |
0.5-5 |
0.5-5 |
N/A |
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Physical
Specifications
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| Weight
[kg] |
electronic
unit: 20
sensor unit: 30
|
electronic
unit: 20
sensor unit: 30
|
electronic
unit: 20
sensor unit: 30 |
electronic unit: 20
sensor unit: 7
|
electronic
unit: 20
sensor unit: 5 |
| Power |
100-250
VAC
50-60 HZ
300 W |
100-250
VAC
50-60 HZ
300 W |
100-250
VAC
50-60 HZ
300 W |
100-250
VAC
50-60 HZ
300 W |
100-250
VAC
50-60 HZ
300 W |
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Options Available with DT
Instruments
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Model
|
pH/Temp |
Conductivity |
Pump |
Titration |
Upgrade
to DT-1200 |
| DT-100 |
Yes |
Yes |
Yes |
Yes |
Yes |
| DT-200 |
Yes |
Yes |
Yes |
Yes |
Yes |
| DT-300 |
Yes |
Yes |
Yes |
Yes |
No |
| DT-400 |
Yes |
No |
Yes |
No |
No |
| DT-1200 |
Yes |
Yes |
Yes |
Yes |
n/a |
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(1) Instrument can measure attenuation spectra
well beyond 50 vol %, but theory for computing PSD from this data is
limited to 50 vol % and theory for computing zeta potential is limited to 40 vol %. The
isoelectric pH is accurate over the entire range, however, some decrease in the absolute
value of zeta potential may be experienced as one approaches the volume fraction limits.
(2) In calculating the particle size the important viscosity is that
experienced by the particle as it moves in response to the sound wave. This
"microviscosity" in cases such as gels or other structured systems may be
significantly less than the viscosity of the media measured with conventional rheometers
which measure viscosity over a scale much larger than the particle. |
(3) For titration experiments it may be necessary to use external
circulation pump to provide adequate mixing of reagents for quite viscous samples.
(4) For titration experiments it may be necessary
to use the optional external circulation pump to provide adequate
mixing of reagents for quite viscous samples.
(5) Particle size range for zeta potential
measurement might depend on the density contrast. |
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Computer Hardware/ Software Specifications
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CPU
Pentium
4 Processor, >=3 GHz
Mother Board
Intel Chipset
PCI bus
(4-5 slots),
ISA (1-3 slots)
Hard Disk
>=80 GB IDE
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Memory
>= 512 MB
CD R/W Drive
>= 52/32/52
Operating System Microsoft
Windows XP Pro SP2 |
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