1. Load the test bottle and keep it balanced. If it is a dual-function model, set the oscillation mode.
2. Turn on the power and set the timing according to the scale on the surface of the machine. If you need to work for a long time, adjust the timer to the "normally open" position.

3. Turn on the power switch and set the constant temperature:
(1) Put the control switch in the "setting" section, the temperature displayed on the display is the set temperature, adjust the knob and set it to the temperature you need for your work.
(2) Put the small switch of the control part on the "measurement" end, the temperature displayed on the display is the actual temperature of the air in the test box, and the displayed number will also change correspondingly with the change of the temperature in the box.
(3) When the heating reaches the temperature you need, the heating will automatically stop and the green indicator light will be on; when the heat in the test box is dissipated and is lower than the temperature you set, a new round of heating will start again.
4. Turn on the Oscillating Tube Test Device:
(1) Turn on the oscillation switch on the control panel, the indicator light is on.
(2) Adjust the oscillation speed knob to the desired oscillation frequency.
5. Cut off the power supply after work, and set the speed control knob and temperature control knob to the lowest point.
6. Clean the machine and keep it clean.