Thermo Fisher Scientific Eutech DO 6 Plus - Manual (Page 23)

Instruction Manual DO 6+
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5. SETUP
There are two setup menus. One menu is derived from the % saturation and
temperature modes, the other menu is derived from the mg/L (or ppm)
concentration mode.
1) Press MODE to display % or temperature. Press ON/OFF to power off.
OR
Press MODE to display mg/L (or ppm). Press ON/OFF to power off.
2) With the meter off, keep the MODE key pressed. Press and release
ON/OFF, then release MODE. The meter should display “SEt.P” after
ON/OFF is released and “COF.1” after MODE is released.
Press CAL one or more times as needed during setup mode to exit and return
to measurement mode at any time.