DMS7-550M / DMS4-550 Series Hotplate Magnetic Stirrer
LCD digital hotplate magnetic stirrers featuring glass ceramic work plates, 550°C maximum heating temperature, strong magnetic coupling, PID temperature control, and independent safety protection circuits.
Up to 550°C Heating | Glass Ceramic Work Plate | Brushless DC Motor | RS232 Interface
Key Features
- Chemical-Resistant Glass Ceramic Plate: Extremely resistant to corrosion, aggressive acids, alkalis, and thermal shock up to 550°C.
- Heavy-Duty Metal Housing: All-metal cast enclosure provides excellent heat dissipation, fire protection, and waterproof edge seals.
- Enhanced Magnetic Coupling: High-temperature neodymium magnets deliver strong stirring torque without bar decoupling in viscous media.
- Three Selectable Heating Modes: Rapid heating (Mode A), Standard heating (Mode B), and Stable heating (Mode C) to match diverse thermal needs.
- Dual Independent Safety Circuits: Continuous thermal monitoring with hardware cut-off at 580°C and automatic fault diagnostics.
- Residual Heat Warning: “HOT” warning flashes on screen whenever plate temperature exceeds 50°C, even when powered off.
- Integrated Electronic Timer: Timing range from 1 min to 99 h 59 min; heating stops automatically upon completion while stirring continues.
- Maintenance-Free Motor: Spark-free brushless DC motor ensures quiet, smooth running and long lifespan.
Technical Specifications (4-Inch Series)
| Specification | DMS4-550 (Hotplate Stirrer) | DHP4-550 (Hotplate) | DMS4 (Magnetic Stirrer) |
|---|---|---|---|
| Work Plate Dimensions | 100 × 100 mm (4 inch) | 100 × 100 mm (4 inch) | 100 × 100 mm (4 inch) |
| Work Plate Material | Glass Ceramic | Glass Ceramic | Glass Ceramic |
| Motor Type | Brushless DC motor | – | Brushless DC motor |
| Max. Stirring Quantity [H2O] | 10 L | – | 10 L |
| Max. Magnetic Bar Length | 40 mm | – | 40 mm |
| Speed Range | 50 – 1500 rpm (step: 1 rpm) | – | 50 – 1500 rpm (step: 1 rpm) |
| Speed Display | LCD | – | LCD |
| Heating Temperature Range | Room Temp – 550 °C (step: 1 °C) | Room Temp – 550 °C (step: 1 °C) | – |
| Temperature Control Accuracy | ±1 °C (<100°C), ±1% (>100°C) | ±1 °C (<100°C), ±1% (>100°C) | – |
| Temperature Display Accuracy | 0.1 °C | 0.1 °C | – |
| External Temperature Sensor | PT1000 (accuracy ±0.2 °C) | PT1000 (accuracy ±0.2 °C) | – |
| Overheating Protection | 580 °C | 580 °C | – |
| Residual Heat Warning | 50 °C | 50 °C | – |
| Timer Function | 1 min – 99 h 59 min | 1 min – 99 h 59 min | 1 min – 99 h 59 min |
| Heating Power Output | 410 W | 410 W | – |
| Total Power | 460 W | 430 W | 30 W |
| Dimensions (L × W × H) | 270 × 175 × 108 mm | 270 × 175 × 108 mm | 270 × 175 × 108 mm |
| Weight | 2.2 kg | 1.8 kg | 1.8 kg |
| Protection Class | IP21 | IP21 | IP21 |
| Data Connection | RS232 | RS232 | RS232 |
Note: 7-inch models (DMS7-550M / DHP7-550 / DMS7) share identical control electronics with a larger 184 × 184 mm glass ceramic work surface.
