Intelligent Digital Magnetic Stirrer (Heating Plate)

Equipped with digital speed display, dual-screen display, and auto-tuning function.
Features high measurement accuracy, low temperature overshoot, one-touch operation,
internal/external thermocouple temperature measurement, thyristor control output, and thermocouple break protection.

I. Features of Digital Magnetic Stirrer

1. Exclusive square TU2 oxygen-free copper plate with vacuum coating / black crystal ceramic heating panel, elegant and corrosion-resistant.
2. Unique patented heating method, maximum surface temperature up to 350℃.
3. Digital display for rotation speed.
4. Fuzzy PID control algorithm, dual-screen digital display, auto-tuning, high precision, low temperature overshoot, one-touch operation, internal & external thermocouple, thyristor output, 160-240V wide voltage, and thermocouple break protection.
5. Suitable for heating and stirring 50-10000ml standard or non-standard reaction flasks.
6. Adopts German PAPST series DC brushless motor, stable performance, low noise, long service life, no sparks.
7. Flame-retardant reinforced PBT injection molded housing, high temperature resistance, corrosion resistance, and good insulation.
8. 30° inclined control panel for comfortable sitting or standing operation.
9. Stepless speed regulation, stable at low speed, powerful at high speed.

ET-JB Intelligent Digital Magnetic Stirrer Specifications

II. Safety & Operating Notes

1. DO NOT operate without liquid (dry heating).
2. For safe use, please ground the device.
3. The motor is fan-cooled. During high-temperature heating, the motor MUST be running (at low speed/idle) to prevent overheating damage. Damage caused by improper operation is not covered by warranty.
4. After high-temperature heating, turn off heating first, wait for cooling, then turn off stirring.
5. Heating surface is hot during operation; avoid contact to prevent burns.
6. Dry the unit completely if wet, spilled, or used in high humidity to avoid electric shock.
7. Store in dry, non-corrosive environment when not in use for long periods.
8. Ground the device if induced current occurs in high humidity; ensure ventilation.
9. Ambient humidity: 35%-85% (non-condensing).
10. Fuse: Φ5×20 15A.

Specifications are subject to change without notice due to product improvements.

Operating Instructions

1. Fix the support rod, clamp the flask, insert the stirring bar and sensor plug, connect to 220V power, and turn on the main switch.
2. Temperature Setting: Press the heating switch. Press SET, SV value flashes. Adjust with < > ∨ ∧ keys. Press SET again to confirm. Green light = heating; off = stop.
3. Speed Setting: Press the stir switch. Press SET to adjust r/min value, confirm with SET.
4. Auto-Tuning (AT): Minimizes temperature overshoot and improves stability. Re-set after changing solution or conditions.
5. Start AT: Hold < button for 8 seconds. AT light flashes. Hold again for 8s to stop.
6. The unit exits setting mode automatically if no operation for 8 seconds.
7. A rubber cap protects the external thermocouple socket. Remove it when using external sensor.
8. Thermocouple break protection: If “”hhhh”” appears and green light off, check the thermocouple connection.