Sper Scientific 850009 Ultra Violet Light Meter UVA/B - Manual (Page 12)

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MODE AND UNIT SELECTION MODE AND UNIT SELECTION
5. In Zero Mode, press M to clear data points 0
to 20.
Unit Selection
1. Press MODE continuously to cycle through
modes until you reach Unit Mode.
2. Press S to choose the unit of measure:
W/
cm
2
or mW/cm
2
.
Type Selection
This function is reserved for use in future
models.
Zero Adjustment
1. Press MODE continuously to cycle through
modes until you reach Zero Mode.
2. Cover the sensor. If the main display has a
reading other than zero, perform the zero
adjustment.
3. Cover the sensor and press S to zero adjust.
The secondary display indicates the
adjustment value for your reference.
4. Press and hold S for 1 second to clear the
adjustment value.
Note…
When the adjustment value is over 10
W, the
measurement value cannot be offset. The main
display will show the above range reading, and
the secondary display will show “-Err.” Repeat
the zero adjustment procedure or contact Sper
Scientific.