Magnetic Stirrer Manual
First, the characteristics and uses:
Magnetic stirrer, used in schools, environmental protection, health, epidemic prevention, petroleum, chemical industry, metallurgy, medical, and scientific research and production, research and laboratory personnel is an essential tool.
Second，Main technical parameters:
Voltage: 110V
Power：600W
Temperature range: room temperature to 300℃(stainless steel heating plate surface temperature)
Adjustable speed：0 - 2400 Adjustable
Third, use:
1、setting temperature
Press the right side of the arrow keys to enter the temperature setting mode is set or view the settings, see the digital flash to increase the set value in the setup mode, press the up button and down button to reduce the set value, has been pressing the hold will increase orreduced to the value you need to set up, wait about 10 seconds to save the set value and exit the setup mode and return to normal measurement mode.
2、Setting the speed
Press the arrow keys on the left to enter the speed setting mode to set or view the settings, see the digital flash to increase the set value in the setup mode, press the up button and down button to reduce the set value, has been pressing the hold will increase orreduced to the value you need, speed, speed adjustment is divided into 100, is set up, wait about 10 seconds to save the set value and exit the setup mode and return to normal measurement mode.
3、Adjust the internal parameters
Sc: according to the left of the down key and hold after five seconds into the internal parameter settings to adjust the interface, the interface Sc is the error of calibration values, indicating that the thermostat was measured and actual valuesof error, the default is 0.0, you can then pressthe left of the down key to display the flashing number to enter the adjustment of status (the following parameter settings), press the right or down buttons to adjust value. (-99 To 99).
E:After setting the left side of the down key to enter the next parameter adjustment, the interface E breakpoint control in advance the amount (only if the P value is set for 0:00 in force), the default value of 0.5, to adjust and Sc.
P:And then press the left side of the down key to enter the third parameter, the interface P indicates the P value is set, the meaning of the P value is roughly the start to control the temperature = setpoint - (10 / P value). If set to 50 degrees, 49 degrees of control, said the adjustment of 47.5 degrees for 4:00 P value of 10. Use temperature overshoot is too large, the P value with due emphasis on small, if the temperature rises too slowly or you always can not control the temperature, the P value with due emphasis on.
Note: P = 0:00 into the breakpoint control mode. System PID failure when the temperature is below (set start heating value-E value), otherwise stop heating.
c:Then on the left down key to enter the settings of the parameter c, the last parameter is temporarily reserved for the system internal parameters, Do not adjust default value is 20.0.
LS:Parameters and then on the left down key to enter the LS set, indicating that the output power ratio of the minimum speed, sub-file 999, the lowest power setting to start the motor. by default 200.
HS:Thenon the leftdownkey to enterthesetofparameterHS,saidhigh-speedoutput powerratio, sub-999filelimitpower settingformaximummotor speed.by default500
All parameter settings are finished, press the SET button to save the parameters and return to normal operation.
4，Common Faults and troubleshooting
Number | phenomena | Analysis and elimination |
1 | Normal but not heating | The set temperature is lower than the measured temperature. |
2 | Heating light but not heat up | 1, the output connection failure, or the heating of the work of device failure |
3 | Has been displayed 0.0 | Thermistor short circuit or temperature over the lower limit |
4 | Has been displayed 99.9 | Thermistor open circuit, not connected, or temperature over the upper limit |
5 | Temperature is too rushed larger | 1, the P value is too large, with due emphasis on small |
6 | Heating rate is very slow | 1, the P value is too small, with due emphasis on |
7 | Temperaturefluctuations inan unstable | P-valueistoolargeortoo smallvalue of C |
8 | Temperature reflects the slow | C value is too large, appropriate to reduce the value of C |
9 | Display the temperature error | Temperature Probefailure orprobeisnot positioned correctly |
10 | Show a slight temperature error | System error, adjust the SC value |
Indicator information:
The left side of the motor bright light: the electrical power output, no output off.
Heat indicator on the right: the heat indicator light that heating, off to stop heating.
Forth, note:
1，Stirring beat or not to stir, cut off power and check the bottom of the beaker is flat, the location issteady.2, the heating time is generally not too long, intermittent use of prolonging life, do not stir without heating. 3, the speed operation can work continuously for eight hours, high-speed operation can work continuously for four hours, work to prevent violent vibration. 4, the instrument should be kept clean and dry, strict solution into the machine, so as not to damage the machine does not work should be cut off the power.
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