|
KSV Sigma701
Click to Enlarge
Sigma 701- Automatic Tensiometer
Sigma 701 is an automatic tensiometer for the measurement of the surface and
interfacial tension of liquids by Du-Nouy ring or Wilhelmy Plate method.
Features:
- automatic operation of all measuring modes
- uses Wilhelmy plate or Du Nouy ring method
- digital readout for up to measuring values
- automatic calculation of correction values
- Windows-based software
Performance:
- surface tension by Du Nouy ring
- surface tension by Wilhelmy Plate
- interfacial tension of two liquids
- single or repetitive pull to maximum
force without rupture of lamella
- absorption as function of time
- density of liquids
Specifications:
| Maximum sample weight |
5.0 g (25 g with counter weight) |
| Measuring ranges |
25 mN |
| Resolution |
1 µN |
| Stage speed |
0.1 - 40 mm/min (1.7 - 667 m/sec) |
| Standard sample vessels size |
70 mm/50 mm |
| Max. vessel diameter |
120 mm |
|
|
Upgrade packages:
|
|
| T205 |
DCA software for analysis of advancing/receding
Dynamic Contact Angles. |
|
|
| T206 |
CMC software for the measurement of critical
micelle concentration of multi liquid systems. |
|
|
| T207 |
High sensitivity micro balance. Balance for
measurement of extremely small forces e.g. contact angles of single
fibre. 3 measuring ranges and sensitivity ranges, 0.25, 2.5,
25mN/resolutions of 0.01, 0.1, 1 N. (Requires factory installation.) |
Accessories:
| T201 |
Thermostatic vessel for temperature control of the
sample liquid. A heat exchange vessel with water jacket. Heating/cooling
of the water jacket by external bath/circulator. Fits glass sample
vessels of 50 mm and 70 mm in diameter (T104, T105.) Complete with
tubing and connectors to bath/circulator. Operable temperature range 0
to +80 C. (External bath/circulator not included). |
|
|
| T201TC |
Sample temperature controller for the regulation of
the sample temperature via computer control of the external
bath/circulator. Can be used with T204 only. Complete with digital
display a PTFE coated temperature sensor probe and an interface to
bath/circulator. Programmable temperatures through the software. |
|
|
| T202 |
Digital thermometer with display and PTFE coated
sensor probe for temperature measurement directly from the sample . |
|
|
| T203 |
Stirrer. A magnetic stirrer for sample stirring. |
|
|
| T101 |
Dispenser. Computer controlled dispenser for
automatic measurements of CMC. Complete with all accessories for serial
or single sample dilution. |
|
|
|
|
| T102 |
Bath/circulator. Constant temperature
bath/circulator for sample liquid temperature regulation. Software
controlled, fully automatic operation. Temperature range -30 to +130
C°. Stability 0.01 C°. Digital readout. |
|
|
| T104 |
Sample Vessel; fireproof, diameter 70 mm, 6 pcs |
|
|
| T105 |
Sample Vessel; fireproof, diameter 50 mm, 6 pcs |
|
|
| T106 |
Du Nouy ring. Pt-Ir-ring made to DIN 53914-80 and
ASTM D 971 specifications. Packed in protective wooden case. |
|
|
| T107 |
Wilhelmy Plate Platinum plate with micro roughened
surface |
|
|
| T108 |
Ring re-form tool for straightening Du Nouy ring. |
|
|
| T109 |
Sample holder for plates. For rigid samples. Max.
sample thickness 3 mm. |
|
|
| T110 |
Sample holder for plates. For flexible samples.
Max. sample thickness 3 mm. |
|
|
| T111 |
Sample holder for fibres. Single use aluminium tube
hung from balance hook. 10 pcs/bag. |
Catalogue summary
Sigma 701 completes KSV's range of surface chemistry analyzing instruments. This
automatic Tensiometer measures the surface and interfacial tension of liquids by
Du-Nouy ring or Wilhelmy Plate method. Designed to be cost effective and
powerful all round Tensiometer, Sigma 701 takes the lead in easiness of
operation and versatility of use.
The Measuring System
The Sigma 701 consist of the Interface Unit and the System Unit.
The Interface Unit include the power supply,and one
digital display. The display can be configured to display the on-line status of
surface tension (mN/m) or the weight of the probe in milligrams (mg).
There are empty slide-in slots in the Interface Unit for the
circuit cards of optional accessories. These accessories include a temperature
controller with digital display and thermostated water jacket, stirrer,
dispenser and printer and computer interfaces.
The Measuring Unit houses an electronic micro balance, the measuring
chamber and the servo controlled stage drive system. The measuring range of the
balance is 25mN and the resolution 1 N (respectively 250 mN/m with 0.01 mN/m
with standard Du-Nouy ring). The speed of the stage is user selectable. Tarring
and calibration of the balance is automatic.
The wide opening doors in the front allow easy
access into the measuring chamber while providing protection from environmental
disturbances.
A thermostated vessel for sample temperature control, an analogue or digital
thermometer are supplied separately as an accessories. For other accessories see
section Up-grading the Sigma 701.
Methods of Measurement
Sigma 701 measures the time dependency of the surface or interfacial tension of
liquids by standard Du-Du-Nouy or Wilhelmy Plate method. The instrument can also
perform repetitive pull to maximum force with out braking the lamella. The
maximum force will be displayed in clear digits in the display panel of the
Interface Unit.
A wettability studies can be performed when the instrument is
configured to measure the weight of the probe. Measuring the density of liquids
and determination of mass, volume and density of solids is possible in this mode
of operation.
Up-grading the Sigma 701
By use of dedicated up-grade packages with software it is possible to customize the instrument to perform variety of measurements. These include,
Critical Micelle Concentration , Dynamic Receding and Advancing Contact Angles,
Surface Free Energy, Adsorption/Absorption and Density of liquids. Up-grade
package consisting of a high sensitivity balance and special software allow
characterization of wettability of single fibers. See specifications for the
details of up-grade packages.
The empty slide-in slots in the Interface Unit are
used for the circuit cards of optional accessories. These accessories include a
temperature controller with digital display and thermostated water jacket,
stirrer, dispenser and printer and computer interfaces.
|
