Dr.Thiedig Digox 6, Руководство по эксплуатации

Страница: 19 / 62

19
Individual cases and recommended
calibration
Measurement in beer
•
For the measurement in beer, we recommend
using the Thiedig active calibration for most
cases.
Trimming of an offset (cross-sensibility)
•
If an offset occurs during the measurement,
which means the indicated measuring value is
increased by the same value in the total
measuring range, this offset can be corrected.
•
For this, the Ref min calibration determines a
zero current I
zero
. A combination with the other
calibrations is possible.
NOTE:
Should implausible results occur during the
Thiedig active calibration, please check the zero
current (section 8.1, Status display). It should be
0µA in most cases. In order to delete the zero
current, please refer to section 4.6.1, Ref min
calibration.
Measurements with the sampling device.
•
The short calibration is especially suitable for
cases in which constant measuring conditions
for a calibration are only available for a short
time.
Measurement in wort
•
If the oxygen concentrations are above 1mg/l
(e.g. in wort), it is no longer possible to carry
out a Thiedig active calibration.
•
For this, we recommend carrying out a Ref
max calibration. In the course of this, the
Digox 6 is trimmed with an externally
determined reference value.
NOTE:
Due to a frequently occurring content of
suspended particles, blockages in the analyser
block can happen during the measurement in wort.
Therefore, we recommend the following practical
steps:
- Secure the hose, which is connected at the
sample return, with a hose clamp.
- On this hose, put a hose clip after the
regulating valve and open the regulating valve
as far as it will go.
- Regulate the flow via the hose clip after the
analyser block .
For further uses, please do not hesitate to contact
us.