Measuring Equipment » Ring/Plate-Tensiometer TD 2

Advantages

Advantages with the LAUDA TD 2

The successor to the TD 2 accomplishes the move to fully automated tensiometry and maximises user convenience directly over a PC. This extremely compact stand-alone device offers everything needed to measure surface and interfacial tension at the push of a button either in the laboratory or in the field as simply as possible. The accurate, reproducible results can be displayed, printed, saved, or transferred to a PC.

With this device it is also possible to measure the density of liquids and to determine small weights. The convenient external control panel has a large graphic display that can be operated intuitively without special training. The integrated microprocessor handles sample positioning, force maximum detection, and data correction. The program repeats measurements until a user-defined stability is reached and calculates static surface/interface tension and standard deviation over the last series of individual measurements, and compiles the results in easy-to-understand tabular format.

With its rugged design, ease of operation, and high precision, the TD 2 is ideal for use in all quality control applications. Since measurements are taken completely independently by the user and documented together with the required settings, the device also meets the stringent requirements of the GLP guidelines.

Advantages

Easy to operate
Transmits a direct feel for surface and interfacial tension
Specially suited for beginners and in educational settings
Digital display of surface and interfacial tension
Results can be displayed, printed, saved or transferred to a PC
Precise electromagnetic weighing cell
Simple selection of measuring methods according to Du Noüy-ring, Wilhelmy-plate, Lenard frame or density measurement
Calibration with standard weights

New measuring options

High resolution (± 0.01 mN/m, ± 0.1 mg) and expanded measuring range up to 300 mN/m up to 5 g
Automatic maximum detection and maximum scanning with selectable range
Tabular representation of individual measurements, number of measuring points, measuring time, corrected and uncorrected data (surface/interfacial tension, density)
Automatic ring correction (based on Zuidema and Waters)
Automatic control of data stability based on predefined standard deviation
Semi automatic calibration in three accuracies with standard weights
Input of ring/plate geometry possible
User-defined measuring point density and measuring time
Storage of up to 500 measurements with related parameters
Numerical user-defined sample designation
Direct or subsequent output of data to optional printer or PC (optional data transfer program required) via RS 232 interface
Measurement and documentation of temperature in the sample by means of digital temperature sensor (optional)
Magnetic stirrer control for homogenisation of disperse samples

Control panel Command

This convenient control panel allows the complete remote operation of the measuring stand (movement of sample table, input of measuring parameters, start of measurement, and transfer of data over RS 232 interface to printer or PC). This minimises vibrations to the measuring stand. The high-resolution graphic display offers menu-based user guidance and displays individual measurements and results in tabular format.

Measuring stand

The measuring stand is equipped with a high-resolution load cell and a DC motor for smooth movement of the measuring table with 10 selectable speeds. A temperature sensor and magnetic stirrer can be connected to the device on request. The accessible sample chamber allows the use of standard sample beakers up to 8 cm in diameter.