WIGGENS WB2000-C Overhead Stirrer
| Brand | WIGGENS |
|---|---|
| Origin | Germany |
| Model | WB2000-C |
| Stirrer Type | Electric Overhead Stirrer |
| Max. Mixing Volume | 50 L (H₂O) |
| Speed Range | 20–2000 rpm |
| Speed Accuracy | ±1 rpm |
| Torque | ≤70 N·cm |
| Max. Viscosity | ≤20,000 cP |
| Motor Power Input/Output | 70 W / 50 W |
| Clamp Diameter | ≤10 mm |
| Reversibility | Yes |
| Control Interface | LCD Digital Display, RS-232 Port, 0–20 mA & 0–10 V Analog Input, 0–5 V Analog Output, Footswitch Port |
| Dimensions (W×D×H) | 105 × 160 × 185 mm |
| Enclosure Finish | Corrosion-Resistant Surface Treatment |
Overview
The WIGGENS WB2000-C Overhead Stirrer is an engineered solution for precision-controlled mechanical agitation in research laboratories, pilot-scale synthesis, and quality control environments. Designed around a brushless DC motor architecture, it eliminates carbon brush wear—ensuring consistent torque delivery and extended operational lifespan under continuous high-load conditions. Its core principle relies on direct-drive rotational force transmission via a vertically mounted shaft, enabling stable, low-vibration mixing across diverse viscosities and vessel geometries. Unlike magnetic stirrers limited by heat sensitivity and volume constraints, the WB2000-C delivers scalable agitation up to 50 L of aqueous media while maintaining speed stability within ±1 rpm across its full 20–2000 rpm range. The unit’s overhead configuration supports open-vessel reactions, jacketed reactors, and multi-port glassware setups—making it suitable for applications requiring inert atmosphere maintenance, temperature control integration, or simultaneous addition of reagents.
Key Features
- Brushless DC motor with integrated microprocessor-based closed-loop speed regulation for real-time feedback and constant rpm maintenance under variable load
- Corrosion-resistant housing surface treatment compliant with ISO 9001-certified manufacturing standards for long-term durability in chemical-lab environments
- Top-entry shaft design allowing unobstructed vertical insertion—eliminates need for height adjustment; users configure immersion depth solely via clamp position
- Soft-start functionality at 20 rpm minimizes splashing and improves operator safety during initiation of viscous or foaming systems
- Integrated electronic overload protection prevents motor stall and thermal damage during unexpected viscosity spikes or mechanical binding
- Low-noise operation (<55 dB(A) at 1 m) achieved through precision-balanced rotor assembly and sealed gear train
- Full bidirectional rotation capability for optimized suspension homogenization and particle dispersion
Sample Compatibility & Compliance
The WB2000-C accommodates standard laboratory vessels including borosilicate glass reactors (1–50 L), stainless steel bioreactor vessels, and jacketed reaction flasks. It supports common stirring elements—four-blade stainless steel impellers (included), anchor, paddle, and propeller configurations (optional). The unit meets IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) requirements. Its analog and digital I/O interfaces facilitate integration into GLP/GMP-compliant workflows where audit trails and device interlock logic are required. While not intrinsically rated for hazardous locations, optional ATEX-compatible motor variants are available upon request for solvent-handling applications.
Software & Data Management
The WB2000-C includes native RS-232 serial communication for PC-based control using WIGGENS-provided terminal software or third-party SCADA/HMI platforms. Analog inputs (0–10 V / 0–20 mA) allow synchronization with external process controllers—for example, linking stir speed to temperature ramp profiles in automated synthesis systems. Analog output (0–5 V) provides real-time speed telemetry for data logging. All interface operations support timestamped command history, aligning with FDA 21 CFR Part 11 principles for electronic records when deployed with validated software environments. No proprietary cloud service is embedded; all data remains locally managed per institutional IT policy.
Applications
- Kinetic studies requiring precise shear-rate control in polymerization, hydrolysis, or crystallization reactions
- Preparation of colloidal suspensions, nanoparticle dispersions, and emulsions where reproducible energy input is critical
- Buffer and media preparation in cell culture and bioprocessing labs
- Titration support systems where agitation must remain uninterrupted during automated reagent dosing
- Environmental testing protocols involving soil slurry homogenization or wastewater sample conditioning
- QC testing of industrial lubricants, paints, and adhesives per ASTM D2196 and ISO 2557 standards
FAQ
Does the WB2000-C support protocol-driven automation?
Yes—it accepts programmable speed ramps and step sequences via RS-232 or analog input signals, enabling integration into automated reaction stations.
Can it operate continuously for 24/7 duty cycles?
Yes—the brushless motor and thermally optimized chassis are rated for indefinite continuous operation at ≤70% of maximum torque.
Is calibration traceable to national standards?
Speed calibration is factory-verified against NIST-traceable tachometric references; user-accessible recalibration is supported via diagnostic mode.
What safety certifications does it carry?
CE marked per Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU; RoHS 2011/65/EU compliant.
Are spare parts and service documentation available internationally?
Yes—WIGGENS maintains authorized service centers across EMEA, North America, and APAC regions; technical manuals and firmware updates are accessible via secure customer portal.
