Unpacking; Useful Information; Drive - IKA ULTRA-TURRAX T 25 digital Betriebsanleitung

Unpacking

Unpack
- Please unpack the device carefully
- In the case of any damage a fact report must be set immedia-
tely (post, rail or forwarder)
Delivery scope
- Disperser T 25 digital
- Extension arm
- Hexagon socket screw
- Tool set for dispersion tools serie S25
- Operating instruction

Useful information

Dispersion is the dissolution and diffusion of a solid, liquid or
gaseous phase in a liquid that is not consolute with that phase.
The rotor/stator principle
Due to the high rotation speed of the rotor, the medium to be
processed is automatically drawn axially into the dispersion head
and then forced radially through the slots in the rotor/stator
arrangement. The high accelerations acting on the material
produce extremely strong shear and thrust forces. In addition, high
turbulence occurs in the shear gap between rotor and stator,
which provides optimum mixing of the suspension.
The dispersion effectiveness is heavily dependent on the product
of the shear gradient and the time the particles spend in the shear
zone. The optimum range for the circumferential velocity of the
rotor/stator arrangement is 6-24 m/s.
A processing time of a few minutes is usually sufficient to produce
the desired fineness. Long processing times bring only insignificant
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All manuals and user guides at all-guides.com
improvements in the obtainable fineness; the energy expended
serves merely to increase the temperature of the medium.
Drive unit
The drive unit opens up a wide range of possibilities for dispersi-
on technology in the conventional laboratory with a respective per-
formance output of approximately 300 watts at 24,000 1/min.
The speed is set by using the differently adjusting wheel. The
motor speed can be read off the LED display. For example, a value
of 13.6 corresponds to 13,600 min
The motor speed can be recorded using an IKA Tachometer DZM
control.o, which can be connected after removing the cover (3) on
the boom side of the device (see fig. 1). Data is transferred to the
PC using the RS 232 interface on the DZM control.o.
Fig. 4
.
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092007