Operation, Controls, B1 controls – Hach-Lange REFO 3_REFO 3D User Manual
Page 6: B operation
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Operating Instructions REFO 3 / REFO 3-D
5
B Operation
B1 Controls
REFO 3-D is operated with the three blue keys next to and below the display and the
large blue Meas/ON key on the instrument’s side.
Display
Angle selector key
Program key
Statistics key
Figure 1: REFO top view
Angle selector key:
to select the viewing angle
Program key:
to select the program
Statistics key:
for statistical evaluation of set-off measurements
Meas/ON-key:
to turn on REFO and trigger a measurement
The keys have special functions during the input of calibration and standard values,
during statistics mode and memory print.
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