Retsch EasySieve - Handbuch (Seite 28)

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28
Fig. 11: Sieve query AS 200 jet
This question is used as the basis for deciding on the following procedure. If the
answer is “yes”, the sieve analysis proceeds in accordance with what is known as
the “Swiss procedure“, whereby a complete representative sub-sample of the
material to be sieved is used for each mesh size. Ideally all sub-samples should
have the same weight. If the answer is “no”, the sieving analysis proceeds in
accordance with the “standard process”, whereby the oversized grains in the
respective sieving must be quantitatively transferred to the following sieve and
sieved further. Accordingly the quantity of the material to be sieved is only entered
once and after that the software enters it automatically for the following sieving
process after the deduction of one sieving run.
Information appears at the top of the window about the settings made in the sieving
task for the balance and sieving machine. When automatic weight transfer is set,
the weight is transferred automatically by actuating the weighing process on the
balance.
In the following the tare weights of the sieves, the cumulated weight of the sample
and the individual sieve weights after the sieving must be transferred or entered
into the corresponding fields. The value at the balance is always transferred into
the input box where the cursor is.
All fields are greyed out in the measuring mode because no manual changes may
be permitted here. The active field here is marked with three asterisks. In this
window the weight (only) is entered by data transfer from the balance.
Input of the tare weights:
If a sieving was conducted already for the selected sieve stack file, the fields are
filled with the last tare weights. The user has the option of accepting these now. In
that case the cursor must simply be positioned at the ““total weight” input field. If
you wish to update the tare weights, these are entered or transferred, beginning
with “bottom”, whereby the cursor advances automatically to the next field.
Input of the sieve load:
The total weight of the sample must be transferred / entered into this field. Once
the sieve load has been inputted, it is no longer possible to change the tare
weights. The prompt for starting sieving comes then.
Conducting the sieving:
Once the sieve load has been inputted, the program prompts the execution of the
sieving process. It can also be started by pressing the Sieve key. A precondition for