1、 Brief introduction of constant temperature quadruple magnetic stirrer

  Quadruple constant temperature magnetic stirrer HJ-4A is a multi position constant temperature magnetic stirrer, which is widely used in Colleges and universities, environmental protection, scientific research, health and epidemic prevention, petrochemical, metallurgy, medical and other departments. The instrument has good performance, no noise, no vibration, and remarkable mixing effect. It is an ideal and necessary tool for laboratory technicians

2、 Technical parameters:

1. Electric source: single phase AC, 50 Hz, 220 V ± 10 v
2. Motor power: 25W × 4 heating power: 300W × 4
3. Temperature control range: room temperature - ~ 100 ° C ± 0.5 ° C heating material: seamless stainless steel heating pipe
4. Stepless speed regulation: 0 ~ 2400 RPM synchronous mixing
5. Working size: diameter: 130mmx4 mixing tray material: stainless steel
6. Instrument size: 600x310x130mm

3、 Usage:

  When using the instrument, first check whether the accessories are complete, then install the fixture in order and plug in the temperature control sensor for standby. (Note: the sensors should be inserted according to the number, and can not be exchanged to avoid affecting the temperature control accuracy. Remember to put the required experimental solution into the beaker or flask, and then put the stirrer in the center of the chromium plating plate, plug in the power supply, and turn on the power switch, When the indicator light is on, it indicates that the power supply has been connected. Turn on the working switch and the indicator light is on. Adjust the speed control knob to select the mixing speed you need from left to right (from low speed to high speed). It is not allowed to start at high speed directly, so as to prevent the agitator from being out of sync and causing jumping. To set the temperature, press the set key to enter the temperature setting mode to set or view the set value. Press the set key to see the number flashing. In the setting mode, press the up button to increase the setting value and the down button to decrease the setting value. If you keep pressing the button, it will increase or decrease to the value you need. After setting, press the set button again to exit the setting mode and return to the normal working measurement mode.

  Adjust parameter SC: press the set key for 3 seconds and enter the internal parameter setting adjustment interface. The interface shows that SC is the error calibration value, indicating the error between the measured value and the actual value of the temperature controller. The default value is 0.0. You can press the set key again to display the flashing number to enter the adjustment state (the following parameter setting method is the same), and press the up or down button to adjust the value. （-9.9~9.9）

E: After setting, press the set key to enter the next parameter adjustment. The interface shows that e represents the advance of breakpoint control (only effective when p value is set to 0). The default value is 0.5, and the adjustment method is the same as that of SC.

P: Then press the set key to enter the third parameter. The interface shows that P indicates the setting of P value, and the meaning of P value is roughly the starting control temperature = set value - (10 / P value). If it is set to 50 degrees, when p is 10, it means that 49 degrees begin to control; when p is 4, it means that adjustment begins at 47.5 degrees. If the temperature overshoot is too large, adjust the p value appropriately. If the temperature rises too slowly or the control temperature is not reached, adjust the p value appropriately. Note: when p value is 0, the breakpoint control mode is entered. That is, the system PID fails. When the temperature is lower than (set value - E value)  , it will start heating, otherwise it will stop heating.

c: Press set key to enter parameter C. the last parameter is reserved in the system temporarily. Please do not adjust it. The default value is 10.0.

Al: press the set key to enter the setting of parameter Al, which indicates the high temperature alarm value. That is, when the temperature > set temperature + Al, the instrument will alarm at high temperature. Ti: press the set key to enter the setting of parameter ti. Ti is the timer and the unit is minutes. 0 means that the timing mode is off; otherwise, when the Ti value of the instrument works for minutes, it will enter the stop state and stop the output of the load end. After setting all parameters, press set key to save parameters and return to normal working state.

Instructions:

The far left is the heating indicator light, on means heating, off means stop heating.

Digital tube: temperature control part display

There is no need to carry out any operation. When this process is carried out several times, the specific experiment will be better. Because the temperature value is relatively stable at this time, the power supply should be cut off when it is not working. To ensure safety, please ground the ground wire when using it. The instrument should be kept clean and dry, and no solution is allowed to enter the machine to avoid damaging the machine parts

4、 Precautions:

a) Heating time should not be too long, intermittent use can prolong life

b) It can work continuously at medium speed and 8 hours at high speed

c) Please read the manual carefully for correct use

d) If it is not used for a long time, please wipe it and put it in a dry and ventilated place

Changzhou Runhua Electric Appliance Co., Ltd
Address: 26 Jinsheng East Road, Jintan City
website: www.runhuayiqi.com
Email: 394514722@qq.com
Tel: 0519-82305398
Fax: 0519-82306938

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