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Vario 4-8


Vario 4-8

Variable sample dividers
TYPE 4-8
PURPOSE:
Dividing samples of grain, seed and other granular products. Accurately dividing to the desired sample size in one operation. Copy sample option on some models.

Function description:
The sample to be divided is poured through a hopper (pos. 1.) in the top of the divider. From the hopper the sample material glides through a rotating tube (pos. 2) which passes a number of variable outlets (pos. 11) leading the sample to sample trays (pos. 7 and 8). Sample material hitting between the variable outlets, is guided out and away as surplus sample (pos. 9). The samples collected in the sample trays (pos. 7 and 8) consists of a certain number of sub samples, the number of sub samples can be calculated by multiplying the number of rotations of the rotating tube (40 rpm) with the number of outlets. The accuracy of the dividing depends on the number of sub samples. To obtain the greatest accuracy, the time taken for dividing must never be less than 20 sec. With samples of less than 4 kg. it is necessary to use an inlet hopper with a smaller outlet hole.

Example:
Using a divider model 2 L as shown on the principal drawing. 4 kg of sample should be divided into 2 samples of 1 kg. each. I.e. 1 sample and 1 copy sample. The handle (pos. 10) is moved to position 4 on the scale. The sample trays (pos. 7 and 8) are placed in position. Check that the hopper is of the correct size, in this case no. 12. Start the divider by turning the switch on the front to position "drift". Pour the sample into the hopper and wait app. 15 sec after the material has left the hopper. Stop the divider. Sample and copy sample are now ready for analysis or storing.

Typical use:
The sample dividers are often used together with our sample taker type RAKORAF, this sample taker is used for taking samples from lorries. Sample dividers model 2H and 2L are used for this application. The sample divider is then started automatically when the reception box from the RAKORAF opens, and the sample drops into the hopper. Surplus sample material can automatically be transported out to a container. In laboratories variable dividers can be used for very precise dividing of different materials. Compared with the "riffle type" divider and the "boerner divider" a lot of labour time is saved. In addition to this the required sample size can be obtained both easily and accurately. The divider can as an option be delivered with an electronic scale for precise adjustment.

    Model
    4 – 8
No of samples    4 or 8
Material    Ratio
Rape     1:8 - 1:120
Grain    1:8 - 1:88
Peas    1:8 - 1:48
Flour    n.a.
Height    840 mm
Width    550 mm
Depth    492 mm
Weight    68 kg

Model 4-8:    Sample divider with options for 4 or 8 samples. For grain products.

Specification:
Surface treatment epoxy painted or electro galvanised.
Motor 60 W, 230 V, 50 Hz.

Additional equipment:
Automatic control panel.
Vibration feeder for samples < 1 kg.
Stainless coverings for outlets for changing the dividing ratio.
Hoppers no 3,6 and 9.
Extension hopper 8 kg.
Sample tray in stainless. 2 or 3,5 litre.
Program for PC to determine high accuracy in dividing grain and seed.
Transport system for transport of surplus sample.

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