Magnetic heating stirrer operation steps
1. Put the magnetic stirring bar into the beaker containing the solution.
2. Put the beaker on the Heating Plate and insert the sensing element.
3. Turn on the power, adjust the heating speed, and start stirring.
4. When stirring, the speed control button must be adjusted slowly. If the adjustment is too fast, the stirring rotor will break away from the magnetic force of the magnetic steel and keep beating. The knob should be quickly turned to the stop position, and after the stirring bar is still, slowly increase the speed of stirring, and gradually increase the speed stably. Liquids with high viscosity at room temperature usually have poor thermal conductivity. When heating and stirring, it is not suitable to raise the temperature rapidly to avoid the container from breaking. The constant temperature device should be fully utilized, and the temperature should be raised step by step, and the sensing element must be inserted into the external water jacket.
5. If you want to measure the temperature in the container, you can slowly turn the temperature adjustment knob to lower the red mark of the temperature indicator. When the red light is on, the temperature indicated by the red mark immediately is the temperature of the liquid inserted into the measuring element.
Magnetic heating stirrer repair warranty and precautions
1. The magnetic heating stirrer needs to be reliably grounded to ensure equipment and personal safety.
2. When stirring, the speed control knob must be adjusted slowly. If the adjustment is too fast, the stirring rotor will break away from the magnetic force of the magnetic steel and keep beating. The knob should be quickly turned to the stop position, and after the stirring bar is still, slowly increase the speed of stirring, and gradually increase the speed stably.
3. If liquid falls on the aluminum plate on the surface of the Heating Plate, it will corrode the surface of the plate or generate heat and gas, which will affect the heating element and motor. It is necessary to turn off the power immediately to remove it.
4. Liquids with high viscosity at room temperature often have poor thermal conductivity (such as epoxy resin). When heating and stirring, it is not appropriate to heat up rapidly to avoid container rupture. The constant temperature device should be fully utilized, and the temperature should be raised step by step, and the sensing element must be inserted into the external water jacket.
Instructions for using magnetic stirrer
1. When you find that the stirrer jumps or does not stir during stirring, please cut off the power supply and check whether the bottom of the beaker is flat and whether the position is correct. At the same time, please measure it. The current voltage is between 220V±10V, otherwise the above will appear Condition.
2. The instruments and equipment should be kept clean and dry. It is strictly forbidden for the solution to flow into the machine, so as not to damage the machine. When not working, the power should be cut off.
3. Generally, the heating time should not be too long. Intermittent use increases the service life and does not heat when not stirring. Magnetic stirrer is a laboratory instrument for liquid mixing, mainly used for stirring or simultaneously heating and stirring low-viscosity liquid or solid-liquid mixture. Its basic principle is to use the principle of the same-sex repulsion and opposite-sex attraction of the magnetic field, and use the magnetic field to push the magnetic stirrer placed in the container to perform circular rotation, so as to achieve the purpose of stirring the liquid. With the heating temperature control system, it can heat and control the sample temperature according to the specific experimental requirements, maintain the temperature conditions required by the experimental conditions, and ensure that the liquid mixing meets the experimental requirements.
4. It can work continuously for 8 hours at medium speed and 4 hours at high speed, and avoid severe vibration when working.
5. Electricity: The power socket should use a three-hole safety socket, which needs to be properly grounded. The magnetic stirrer utilizes the characteristic of the same-sex repulsion of magnetic substances, and drives the magnetic stirrer to rotate by constantly changing the polarity of the two ends of the base, and drives the sample to rotate through the rotation of the magnetic stirrer, so that the sample is evenly mixed!
