Brief introduction

DF-101SA typeDigital display constant temperature and speed collection magnetic heating stirrerWidely used in various universities, environmental protection, health, epidemic prevention, petroleum, chemical, medical and other units. This instrument has good performance, no noise, no vibration, fast heating, and is equipped with a constant speed device for stable speed, making it an ideal tool for experimenters.

2、 Performance

1Electricity Source: Single phase AC 220V±10V 50HZ

2Overall power:960W

3Speed regulation range:100～2000change/Divide, constant speed device, accuracy: ±1change/minute

4Temperature control range: room temperature~299℃Temperature control accuracy: ± 1 ℃

5Speed timing: 0-999 minutes

3、 Usage method

1When using this instrument, first check if the random accessories are complete, then install the fixtures in order and plug in the temperature control probe for backup.

2Place the oil or other solution required for the experiment in a stainless steel pot (over an electric heating tube), add a stirrer, and place the temperature sensor probe vertically in the solution to wait for work. Add the solution to a stainless steel pot and then place it in other containers such as beakers or triangular flasks for stirring, heating, and waiting for work.

3、Place the mixing container in the middle of the heating tube, insert a stirrer, turn on the power and switch on the switch, and the instrument indicator light will turn onPress the "∧" key to display an increase in speed, and press the "∨" key to display a decrease in speed. After setting the speed, press the "RUN" button to start the motor, and press the "STOP" button to stop the motor.

Press and hold the up and down keys on the right to set the time, press the "∧" key to increase the time, and press the "∨" key to decrease the time.

Set the time before the motor starts running. The motor is running and the set time is invalid.

The up and down keys on the left side of the display panel are for speed setting, and the up and down keys on the right side are for time setting.

4Temperature setting: Press the SET key to set the temperature. Press the SET key to flash the data on the lower digital display (normal temperature measurement on the upper display), indicating that the instrument has entered the temperature setting state. Press the △ key to increase the set value, press the ▽ key to decrease the set value, and continue to press the increase or decrease key to quickly change the set value. Press the SET key again to return the instrument to normal working state. The temperature setting is complete.

Correction of sensor errors: When confirming that the value displayed on the instrument is not the correct measurement value, the displayed value can be corrected. Press the SET key for 3 seconds to enter the inner menu of the instrument panel. After selecting parameter SC, use the △ or ▽ keys to modify this parameter. The range for correcting sensor errors is+50 to -50. After the correction is complete, press the SET button for 3 seconds to exit. The correction value of the instrument is 0 when it leaves the factory. When using it, it is necessary to prevent correcting the instrument that displays correctly to be incorrect.

Setting and Explanation of User Working Parameters

Press the SET button for 3 seconds to enter the inner layer parameter setting state of the instrument.

.Parameter meaning:

ALOvertemperature alarm parameter: When the temperature exceeds the AL value, the ALM indicator light will turn on.

HYMain output hysteresis to prevent frequent relay operation.

PThe proportional band refers to the proportional control value. The instrument is centered around the set value and the P-value is distributed on both sides of the set point. Within the P-value range, the instrument operates in PID mode.

IUsed to eliminate static errors, too small can cause temperature overshoot. Usually 10-40 seconds.

TFor the heating output cycle, which is the working cycle of the relay, a small T value has good control effect, but a too small T value will reduce the lifespan of the relay due to frequent operation. Generally, the T value is taken as 20-60 seconds.

SCError correction.

LCKParameter locking to prevent misoperation.

matters needing attention:

1）If the measured temperature differs greatly from the actual temperature, it is generally due to the use of the wrong sensor. Please place the sensor in boiling water, and the instrument should display 100 ℃. Otherwise, check if the sensor matches the instrument input type *.

2）The instrument display is normal, but the temperature suddenly loses control. It is necessary to check whether there is a short circuit or open circuit in the external load.

3）The instrument displays HHH when the measured value exceeds the instrument range or the thermocouple is disconnected, and displays LLL when the measured value is below the lower limit of the instrument range or the thermocouple is connected incorrectly.

5When not working, the power should be cut off. To ensure safety, please connect the ground wire when using.

6The instrument should be kept clean and dry, and it is strictly prohibited to heat the stainless steel pot without adding solution to avoid burning out the heater.

4、 Precautions

1The heating time should generally not be too long, intermittent use can prolong the service life.

2Medium speed operation can work continuously for 8 hours, while high-speed operation can work continuously for 4 hours.

3Please read the instruction manual carefully before use for proper use.

4If not used for a long time, please wipe it clean and place it in a dry and ventilated place.

5When this instrument is in operation, it should be supervised by a dedicated person to prevent accidents.

Our products come with a one-year warranty from the date of manufacture (we may charge additional fees for damages caused by human error or improper use), and will be repaired for life. Please feel free to use them with confidence.