Idiomas disponibles
Idiomas disponibles
38
Chemical and biological safety
1.4.2
The device is not intended for use with potentially biohazardous substances.
The relevant regulations regarding the handling of the substances used have to be observed:
The Decree on Hazardous Matters, the Chemicals Act, and the rules and information of the chemicals trade.
On the part of the user it has to be ensured that the persons entrusted with the use of the unit are experts in
the handling of substances used in the devices or that they are supervised by specialized persons,
respectively.
When using biohazardous substances, the regulations for handling the substances used must be
observed. In such cases, the use is the sole responsibility of the user.
For all work with chemicals: Always wear protective glasses! Please observe the memorandums of the
employer's liability insurance associations and the safety data sheets of the manufacturers.
Dispose of all used solutions in accordance with national regulations and laws. Select the type of
protective equipment according to the concentration and quantity of the hazardous substance at the respective
workplace.
Flammable liquids
1.4.3
When handling flammable liquids, make sure that there is no naked flame in the vicinity of the equipment.
Adequate ventilation must be provided. Only small quantities of flammable liquids should be kept in the
workplace.
1.1
Functioning of the device
®
The AVS
470 is used to perform flow-time measurements in capillary viscometers. It is operated via a
Personal Computer.
®
The AVS
470 is equipped with two options for meniscus scanning by using a corresponding ViscoPump III
unit.
The available capillary viscometers enable viscosity measurements 0.35 of approx. 5,000 mm
carried out at a measuring temperature of approx. 20 ... 25 °C.
Connecting TC viscometers to the ViscoPump III VZ 8562 module will also enable the measurement of black
and opaque liquids. As an alternative option it is possible to use viscometers in combination with the light-
optical ViscoPump III VZ 8561 module viscometers for meniscus sensing with the measurement stand, e.g.
®
the AVS
/S.
Prior to the measurement as such, the liquid to be measured is sucked upwards inside the capillary viscometer
though two measurement planes (N2 and N1) which are designed as light barriers or thermistor sensors,
depending on the viscometer type (see Fig.1 and Fig. 2).
The pumping pressure is controlled automatically by the AVS
When using Ubbelohde viscometer, the design of the program ensures that the suspended spherical level will
form prior to the start of the measurement.
Time recording extends up to 9999.99 seconds with a resolution of 0.01 s. The individual results of a
measurement series can either be presented on the display, but it is also possible to document them on the
printer which is available as an option.
®
The AVS
370 can also be operated with ViscoPump II - modules, the older ViscoPump generation.
®
470 via the ViscoPump III module.
/s (cSt) to be
2
