15
RF153-en-GB_V1.1 11/18
Manual Measurements
After placing the measurement liquid, press
M
to start measuring. The measurement
result will display on the LCD and save to
memory automatically (see Section 5-2). If
ERR
is displayed, an error has occurred,
please refer to Section 5-3-2.
Press
M
→
→
→
Zero Calibration
Placed distilled or tap water on the prism,
long press
M
to access the zero function.
Long press
M
→
→
→
•
Perform a zero calibration before each
use.
•
Temperature of distilled/tap water
should equal ambient temperature.
