Optex DOS-20 Instruction Manual page 35

Optical dissolved oxygen sensor
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Select [2-Point Adjustment]
3
using
Enter the [Point 1] display,
4
[Point 1] adjusted, [Point 2] display,
and [Point 2] adjusted values in
this order.
Select a digit by
, and press
set and the cursor moves to the next item.
When a value outside the set range is entered, a short beep sounds.
Pressing
value to the factory default setting.
By pressing
After entering the [Point 2] adjusted
value and pressing
bar is displayed.
When completed, the display returns
to the measurement value display.
When a 2-point adjustment is performed, the offset and span
Reference
adjusted values will automatically replace the values calculated
from the displayed and adjusted values of the 2-point adjustment.
, and press
and value by
. The value is
simultaneously while entering a value resets the
or
, the value returns to the one before changing it.
, a progress
.
35

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