Walz MINI-PAM-II, Manual, Page: 93 / 130

Touchscreen Operation Chapter 7
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sor is positioned at a defined distance and angle relative to the
end of the fiber optics. Therefore, the readout of the internal PAR
sensor applies only for the position of the external PAR sensor.
With the external PAR sensor in calibration position, proper cali-
bration of the internal sensor is apparent from similar readouts of
internal and external PAR. If calibration of the internal PAR sen-
sor has previously been carried out but the two PAR values differ
clearly, check if:
(1) External PAR sensor is in the center of the actinic light
beam.
(2) Setup of previous calibration was different from the current
one. For instance, if in previous calibration the external PAR
sensor was 3 mm away from fiber tip and now the 2035-B
leaf clip geometry is used (7 mm instead of 3 mm distance)
the internal PAR readout would be much higher than the ex-
ternal one.
Internal PAR Sensor Settings


SET
EXIT
Side Panel

,

. Up/down
keys move cursor.
SET . Selects item or
open submenu Cali-
brate.
EXIT . Return to Main
Menu.
Calibration Factor 1136
Calibrate

Spec. Cal-Factor 1.35
Internal PAR 415
External PAR 417
Fig. 50: Internal PAR Sensor Settings