-9-
5.6
Adjust Pump: You can adjust the sample pump in such a way that the
sample quantity displayed is the same as the actual sample volume.
This is necessary because the sample quantity can vary according to
how the hose pump is used and may therefore have to be adjusted.
5.7
Measurements per Sample: You can set the number of
measurements from 1 up to 9. Please ensure that in the case of very
many repeat measurements there is enough sample volume present.
5.8
Date: The date can be set here.
5.9
Time: The time can be set here.
Overview of the maintenance work arising
Description
Frequency
Rinse with
distilled water
1. Several times daily, especially before long breaks
between analyses.
2. After analyses of liquids with strong sugar content.
Zero calibration
1. Daily, before starting analyses
2. Before a calibration
Cleaning
1. Daily, after finishing the analyses
2. After analysis of liquids with strong sugar content
Intensive
cleaning
Monthly, approx. 1 hour
Pump head
replacement
Annually, depending on the number of analyses
Calibration
The FermentoFlash has been precalibrated at the factory (fundamental
calibration) and is delivered with standard settings. For operation, the calibration
for the beer to be analysed must be checked and corrected (calibration) if there
are strong deviations in the analysis values.
The FermentoFlash stores a total of 18 different calibration records for different
types of products. Thus, it is possible (after corresponding calibration) to switch
between different products without recalibration - e.g. from Pils to strong beer
and back.
-10-
The calibration consists of two calibrations (two point calibration) while only one
calibration is necessary for most types of beer. A two point calibration is only
necessary for non-typical types of beers with very low alcohol content, e.g.
alcohol-free beer, malt beer, shandy etc., or for types of beer with very high
alcohol content, e.g. strong beer.
In the case of a two point calibration, the A-calibration is performed with a beer
having low substance content in all parameters (A-Beer) and the B calibration
is carried out with a high substance content reference beer (B-beer). The A-
beer is obtained from the B-beer by dilution (e.g. 20% distilled water, 80%
reference beer) It is important that this dilution is made using an accurate scale
and that it is well-mixed in order to minimise dilution errors.
The machine places certain requirements on the respective reference beer
which consist of this beer showing similarity in the basic ingredients or shows a
similar matrix to the beer to be analysed. In principle, both the reference beers,
A-beer and B-beer, should cover the expected measurement range.
Attention: A new calibration in a different product profile must be performed for
types of beer (types of product) with severe deviations.
These product specific calibrations only have to be performed once. Afterwards
the daily zero calibration is sufficient to compensate for drift and ageing.
As previously mentioned, a so-called “fundamental” calibration of the machine
is made at the factory. This calibration features a rather high accuracy for the
“Beer” matrix (Pils/Export/Lager). This calibration is often sufficient to
completely meet requirements. In these cases, the machine does not have to be
calibrated; the daily zero calibration with distilled water is sufficient, which, as
already mentioned, is performed automatically.
In other cases, it is only necessary to calibrate a single ingredient, e.g. only
alcohol. It is possible to do this with the parameter selection (see page 15,
Selection of the ingredient parameters to be calibrated).
The non-alcoholic beers form an exception: please proceed by following:
1
st
Step
A calibration with the undiluted reference beer. Please activate only the
alcoholic content and put in the refence values for alcohol (all other contents
substances are deactivated; see under 3.7; Choice of the contents substance
parameters to be calibrated). Now start the A calibration.
