Shanghai Sile 81-2 magneticstirrer manual

Instructions

1. Put the machine flat, put the container containing the solution in the center of the instrument disc (ie electric furnace), put an appropriate stirring bar in the container, use a cylindrical stirring bar for a flat-bottomed container, and use a spindle-shaped stirring bar for a spherical container. Containers must not be made of iron or materials related to magnetism.

2. Plug in the power, turn on the power switch, the power indicator light is on, turn on the stirring switch, the stirring indicator light is on, adjust the speed control knob clockwise, the instrument will run from slow to fast, and the user can adjust the stirring speed according to needs. Accelerate gradually, if the acceleration is too fast, it is easy for the stirring bar to escape.

3. If the solution needs to be heated while stirring, you can insert the two-core plug (included with the accessory) into the thermometer socket behind the machine, the temperature rise indicator lights up, the electric furnace heats up, and the heating power is adjusted by the temperature adjustment knob, turn it clockwise to At the maximum, the heating power of the machine is 400W, and when it is turned counterclockwise to the minimum, it is within 20W.

4. If the solution needs automatic constant temperature, the user needs to distribute the mercury thermometer with the electric contact point, weld its two leads on the two-core plug (the two wire ends cannot touch during welding), insert it into the solution, and fix it on the meter with a test tube clamp. On the rod, the thermometer cannot touch the rotating stirring bar, and the automatic constant temperature can be achieved after setting the desired temperature.

 Due to the thermal inertia of the electric furnace, when there is less solution at a lower set temperature, the temperature rises to the set temperature, and the electric furnace has been powered off (at this time the temperature rise indicator is off), but the solution temperature may still rise, affecting the control. temperature accuracy, the heating power can be appropriately lowered at this time. (Note: The electric contact mercury thermometer is a glass instrument, which is extremely fragile and easy to buy in the market, so this machine is not included as an accessory)

5. After the instrument is used, unplug the power supply, clean the appearance after cooling and keep it properly.

6. Precautions: The power supply needs to be reliably grounded; the solution in the container should not be overfilled to avoid overflow during stirring; the instrument cannot be used alone as an electric furnace.