Hach-Lange REFO 3_REFO 3D - Manual (Page 13)

Operating Instructions REFO 3 / REFO 3-D
12
C4 Difference Gloss Measurement
Difference measurement means measuring against a reference. The measured dif-
ference between reference and sample is the indicated measured value.
•
Turn on REFO with key Meas/ON
•
Use the program key to select program P2
•
Use the angle selector key to select the viewing angle (the selected angle is in-
dicated on the display)
•
Place REFO on the reference
•
Press key Meas/ON to measure the reference. The reference measurement is
confirmed on the display with letter R next to the angle value
•
Place REFO on the sample to measure
•
Press key Meas/ON to measure the difference
Now the measured difference value is shown on the display and stored automatically
with consecutive numbering.
C5 Three-Angle Measurement
In three-angle measurements the sample is measured automatically at viewing
angles of 20°, 60° and 85°.
•
Turn on REFO with key Meas/ON
•
Use the program key to select program P3
•
Use the angle selector key to select the first viewing angle
•
Place REFO on the sample to measure
•
Press key Meas/ON
•
Wait for the measuring display
•
Call the other measurings with the angle selector key
Now the measured value is shown on the display. All of the three measurings are
stored together under a number. A maximum of 200 three-angle measurements can
be stored.