YSI Pro20 - Manual (Page 8)

Number Key Description
1 Calibrate
Press and hold for 3 seconds to calibrate.
Initiates One Touch Calibration.
Opens Calibrate menu from the run screen if One
Touch Calibration is disabled.
2 Up Arrow
Use to navigate through menus, to navigate through
box options at the bottom of the run screen, and to
increase numeric inputs.
3 Power and Backlight
Press once to turn instrument on. Press a second
time to turn backlight on. Press a third time to turn
backlight off. Press and hold for 3 seconds to turn
instrument off.
4 Menu
Use to enter the System Setup menu from the run
screen.
5 Enter
Press to confirm entries and selections.
6 Down Arrow
Use to navigate through menus, to navigate through
box options at the bottom of the run screen, and to
decrease numeric inputs.
CONNECTING THE SENSOR AND CABLE
CONNECTING THE SENSOR
“Sensor” refers to the removable portion or electrode sensing portion of the cable
assembly, i.e. the dissolved oxygen sensor. “Bulkhead” refers to the portion of the
cable with the single-pin connector (Figure 3).
4