5
1) Liquid Crystal Display (LCD).
2)
Range
key, to select ppm or % range.
3)
On/Off
key, to turn the instrument ON and OFF.
4)
CAL
key, to enter/exit calibration mode.
5)
Setup
key, to enter/exit SETUP mode.
6)
key, to manually increase temperature or other parameters.
7) Battery compartment cap.
8) DIN connector for DO probe.
9)
key, to manually decrease temperature or other parameters.
METER FUNCTIONAL DESCRIPTION