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Sigma 700
Computer-controlled research tensiometer
Measure ST (Surface Tension) and IT (Interfacial Tension) by ring/plate methods, DCA (Dynamic Contact Angles), wettability, sedimentation, density, CMC (Critical Micelle Concentration), absorption, wetting and Contact Angle of fiber and particle beds
Control temperature, pH, temperature and atmosphere
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Sigma700 Tensiometer
 The Sigma 700 is a complete, ready to use tensiometer, employing the latest advances in precision microbalance technology. Special attention has been paid to the ergonomic and user-friendly design. The measuring unit is the main building block of the system that can be tailored to meet your exact needs.
When you have pinpointed what you want to measure, and any special conditions that should be considered (temperature/controlled atmosphere etc.), you just need to choose which of the software modules and accessories are required. Accessory modules are easily mounted into the Measuring Unit and plug-and-play software modules can be operated by anyone with WindowsTM experience. Once the system requirements have been decided, KSV will assemble and calibrate the Sigma 700 so that it is ready to use immediately upon arrival.
Because of its wide weight range and autocalibrating microbalance, the Sigma 700 is well suited for DCA measurements of large and heavy solid and powder samples. It can run two dispensers simultaneously for CMC measurements, allowing a full CMC curve to be obtained in one measurement. Full PC control over all system functions makes it possible to carry out long measurements without operator intervention during the test & saving time and freeing the operator to concentrate on other tasks.
Features
- Large working space & wide opening doors
- Dispenser and inert-gas ports
- LED illumination of measuring compartment
- Built in stirrer - no moving parts - no magnetic field during measurement
- Built in connectors for temperature and pH sensors
- Auto-locking & auto-calibrating microbalance
- Static charge eliminator
- High speed/extended length movement of sample stage
- Large and heavy sample measuring capability
- Thermal separation space between balance and measuring compartment
- Removable measuring compartment for customized future measuring options such as Langmuir studies, high temperature applications, bursting membrane tests and X-Y sample positioning
- Enlarged pull-down sub-window for on-line viewing of selected data
- Optional synchronized dual dispenser software for dilution CMC measurements of highly concentrated solutions
| Specifications |
| Measuring range |
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1 to 2000 mN/m |
| Resolution (standard probe) |
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0.001 mN/m |
| Maximum load |
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210 g |
| Weighing resolution |
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0.01 mg |
| Force resolution |
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0.1 ìN |
| Contact Angle range |
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0-180° |
| Contact Angle resolution |
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0.01° |
| Calibration and locking |
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Automatic |
| Stage speed |
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0.01-500 mm/min (others by request) |
| Stage positioning resolution |
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0.015 ìm |
| Computer interface |
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USB (RS232 as option) |
| Temperature range |
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Thermoplastic water jacket -10 to 80°C
Stainless steel water jacket -10 to 150°C
Electrically heated jacket room temp. to 250°C
(others by request)
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| Measurements |
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240 x 330 x 620 mm (D x W x H) |
| Software modules |
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- ST/IT Software
- DCA Software
- CMC Software
- Density Software
- Powder Wettability and Sedimentation Software
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