Dissolved Oxygen Meter (Pen Type)

The DO-66 type pen type intelligent Dissolved Oxygen Analyzer is designed to facilitate the user to carry the operation on the spot. The instrument can be divided into two parts: the sensor and electronic unit.

The sensor adopts thin film dissolved oxygen electrode.

The electronic unit is an integrated operational amplifier + microcomputer chip with automatic temperature compensation function.

Package Includes:

•1 x Dissolved Oxygen Electrode

•1 x Dissolved Oxygen Membrane

How To Use :

1.Installing batteries.

2.Connect the DO electrode to the corresponding input.

3.Press ON/OFF key to turn on the machine, take off the electrode protector and insert theelectrode into the solution to be tested.

4.Press [% and mg / L] key for % and mg/L display conversion.

5.The dissolved oxygen concentration of the solution (mg/L or %) can only be read after thedisplay of the instrument is stable.

6.Press the ‘°C/°F’ key to switch between Celsius and Fahrenheit.

7.Press the ON/OFF key to turn off the power.

Supplementary Note For Calibration：

1.Preparation of oxygen free water

Configure 250ml of 5% sodium sulfite solution, you can add the right amount of cobalt chloride as a catalyst.

2.Preparation of saturated dissolved oxygen water

Take 300 to 500 ml of distilled water, at a relatively stable temperature, use an air pump to aerate the distilled water for at least 15 minutes.

WARRANTY for 6 months