K-Patents SeedMaster 2 - Manual (Page 44)

7 CONFIGURE SeedMaster 2 44
44
CONFIG. -> 3RD INPUT 1 / CONFIG. -> 3RD INPUT -> MA. DENS. 1 /
SENSOR CALIBRATION YES
3RD INPUT: MASSECUITE DENSITY SEED CRYSTAL SIZE KEYBOARD
KEYBOARD 0 . 0 1 mm
PRODUCT CRYSTAL SIZE KEYBOARD
KEYBOARD 0 . 6 5 mm
LEVEL MEAS. KEYBOARD
KEYBOARD YES
LENGTH OF CRYST. TIME 1 0 6 min
CONC. (REFR., SEED.) KEYBOARD
KEYBOARD 7 9 . 4 %
CONC. (REFR., STR. END) KEYBOARD
KEYBOARD 8 0 . 4 %
MA. DENS. (SEED.) 1 4 1 0 kg / m 3
CHANGE BACK ACCEPT CHANGE BACK ACCEPT
a) b)
Fig. 7.6
NOTE:
Where the source of data is marked as KEYBOARD, data can be entered or modified directly in the same
line.
Sensor calibration
After having selected the input, a question about “Sensor calibration” has to be answered. Density of the
syrup up to seeding (no crystals as yet) can be calculated with high accuracy (referred to 20 °C reference
temperature) based on syrup concentration data provided by the refractometer. In most cases in practice this
will be somewhat different than the density measured by a less accurate density probe. The same way
density of the massecuite at the end of the strike can be calculated based again on measured mother liquor
concentration and crystal content (% by volume, determined by the laboratory) data. In most cases it will also
be a little or more different than the density measured by the density probe.
If the answer to SENSOR CALIBRATION was YES, then the data in these two points (seeding and end of the
strike) can be used to modify the density data measured during the complete strike by the density probe in
order to have a better match of data in these two end-points. However, if the answer was NO, the original
density data will be used. In this case some of the parameters are not required (these will not appear).
Third input: MASSECUITE DENSITY
The complete list of parameters:
Parameters:
Remarks:
SEED CRYSTAL SIZE Mean crystal size data is required (mm).
PRODUCT CRYSTAL SIZE Mean crystal size data is required (mm).
LEVEL MEAS. YES /NO.
LENGTH OF CRYST. TIME Time from seeding till end of strike (min). Only if previous answer was NO.
CONC. (REFR., SEED) Concentration (refr.) in the seeding point (%).
CONC. (REFR., STR. END) Concentration (refr.) at the end of strike (%).
MA. DENS. (SEED.) Density measured by the density probe in the seeding point (kg/m3).
MA. DENS. (STRIKE END) Density measured by the density probe at the end of strike (kg/m3).
CR. CONT. (LAB, SEED.) Crystal content by the lab in the seeding point, in % by volume, if crystal
footing is used, in other cases: 0 %.
CR. CONT. (LAB, STR. END) Crystal content measured by the lab in % by volume at the end of strike.
VOLUME RATIO Ratio of full to seeding massecuite volume.
NOTES:
1. The last item (CR. CONT. (LAB., STR. END)) should be specified in SET UP -> INPUTS. It can not be
entered, or changed here. It is automatically listed here (if specified) for completeness.
2. If the answer to LEVEL MEAS. was YES, PAN MAX. LEVEL (%) will replace LENGTH OF CRYST. TIME.
The procedure is similar if instead of MASSECUITE DENSITY MASSECUITE SOLIDS CONTENT was
selected as “Third input”.