Operating the bbe BenthoTorch
bbe BenthoTorch Manual Page 27
Mark
S
OFTWARE VERSION
Displays the software version and serial number. This is useful information to help bbe service answer specific
questions.
S.Nr. Ato-03-002
SW ver. 1.04
OK
Calibration Menu
The calibration menu is password-protected to prevent it from unintentional changes
Enter Password:
0 0 0 0
OK + - ESC
The default password is 1234.
General considerations
The calibration of the BenthoTorch includes 3 steps:
Calibration of the offset:
This is the signal of a black surface without any fluorescing material. This is the signal triggered by the coloured
LED´s on the black surface.
Calibration of the reflectance:
To calibrate the reflectance the measurements with a black, a grey and a with surface have to be conducted.
This is the signal triggered by the nearly invisible 700nm LED.
Calibration of the fingerprints:
This calibration has to be conducted with a low and a high concentration of each algae class.
The calibration of the BenthoTorch requires a calibration of all backgrounds and fingerprints at once, because all
dependencies have to be recalculated. Only the offset can be recalibrated seperately.
The procedure is as follows:
3 Offset calibrations and 3x2 algae calibrations are conducted. After each calibrating the parameter is marked in
the menu. As long as the new calibration has not been calculated, the measurements can be repeated if
required. Each single calibration measurement, that has been conducted, is marked in the display.
SET OFFSET:
< black >
OK <- -> ESC
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