1. Introduction
HJ-4A(6) constant temperature magnetic stirrer is widely used in various colleges and universities, environmental protection, scientific research, health and epidemic prevention, petrochemical, metallurgy other departments; this instrument has good performance, no noise, no vibration, no stirring The effect is effective, and it is the tool needed by laboratory laboratory personnel.
2. Technical parameters
1. Power supply: single-phase AC 220V50HZ
2. Motor power: 25W×4 or×6
3. Heating power: 200W×4 or×6
4. Temperature control range: room temperature~100°C±1°C (digital display)
5. Stepless speed regulation: 0~1600 rpm
6. Working size: 125mm×4 or×6
7. Dimensions: 56mm*28mm*12mm (HJ-4) 85mm*28mm*12mm (HJ-6)
3. How to use
When using this instrument, please first check whether the random accessories are complete, then install the fixtures in order, put the required experimental solution in a beaker or flask, then put the stirring bar in the middle of the stainless steel plate, and plug in the power , Turn on the power switch, the indicator light is on, indicating that the power has been connected, turn on the work switch and the indicator light is on to start stirring operation, four or six can work at the same time, or can be used alone. Adjust the speed control knob from left to right (from low speed to high speed ) just select the stirring speed you need, do not start directly at high speed, so as not to cause the stirrer to be out of sync and cause jumping. When constant temperature heating is required, please turn on the heating switch. ), please turn the "Setting↔Temperature Measurement" switch to the setting end, adjust the setting knob to the temperature value you need, when the set temperature value is higher than the actual temperature, the temperature rise indicator light is on, indicating that the heater starts to work, and then turn the switch Turn to the measuring end, the displayed temperature is the actual temperature, please note that the solution should be stirred at the same time, so that the experimental solution can be heated evenly to meet the requirements of the experiment, and at the same time, please place the sensor probe in the solution to facilitate the measurement of the experimental solution temperature ,The temperature control probe and the measured thermometer can be placed on the fixture for fixing. When the solution temperature reaches the temperature you set, the constant temperature indicator light is on, indicating that it is in a constant temperature state. When the temperature fluctuates, the red and green lights (constant temperature, temperature rise) are automatically exchanged , so that the experimental solution is relatively at a constant temperature. This process is automatically completed without any operation. After this process has been carried out several times, it will be better to carry out specific experiments, because the temperature value is relatively stable at this time. When not working, the power should be cut off , In order to ensure safety, please ground the wire when using. The instrument should be kept clean and dry, and the solution is strictly prohibited from entering the machine, so as not to damage the machine parts.
4. Matters needing attention
1. Generally, the heating time should not be too long. Intermittent use can prolong the service life.
2. It can work continuously at medium speed, and can work continuously at high speed for 8 hours.
3. Please read the instruction manual in detail for correct use.
4. If it is not used for a long time, please wipe it clean and place it in a dry and ventilated place.
