Walz MINI-PAM-II, Manual, Page: 29 / 130

Components and Setup Chapter 4
23
can be employed to calibrate the internal PAR sensor of the
MINI-PAM-II (see Section 7.3.4.1, page 86). To this aim, the
MINI-PAM-II light guide and the entrance optics of the spectrom-
eter are inserted in the PAR calibration block (Fig. 13, page 23).
The light guide can be inserted either in the 60° or the 90° port
according to the two possible orientations of the light guide
in the
Leaf Clip Holder 2035-B. With both pieces fully inserted, the dis-
tance between fiber optics end and diffusing disk of the spec-
trometer matches the corresponding standard distances between
fiber optics end and sample level in the Leaf Clip Holder 2035-B.
Replacing the entrance optics used for evaluation of light by the
cap for fluorescence and reflection (Fig. 14, page 24) considera-
bly extents the range of spectral information attainable by the
miniature spectrometer.
Fig. 13: PAR Calibration Block