HNPM mzr-6355 Micro Gear Metering Pump
| Brand | HNPM |
|---|---|
| Origin | Germany |
| Drive Type | Electric |
| Max. Speed | 6000 rpm |
| Flow Rate Range | 0–100 mL/min |
| Dimensions | Compact cylindrical design (typical for mzr-series: ~90 mm length, Ø16 mm) |
| Materials Options | ZrO₂ ceramic or tungsten carbide rotors |
| Compliance | Designed for GLP/GMP-adjacent lab environments |
Overview
The HNPM mzr-6355 is a precision-engineered micro gear metering pump developed by HNP Mikrosysteme GmbH, a German manufacturer specializing in miniaturized positive displacement fluid handling systems. Based on rotary annular gear technology—where two intermeshing gears rotate within a sealed cavity—the mzr-6355 delivers highly repeatable volumetric flow without the need for check valves or pulsation-dampening hardware. Its operating principle relies on fixed-volume displacement per revolution, enabling accurate dosing across low-to-moderate flow regimes (0–100 mL/min) while maintaining minimal shear stress and low flow pulsation (<2% peak-to-peak amplitude under steady-state conditions). This makes it particularly suitable for applications demanding chemical compatibility, long-term stability, and integration into automated analytical platforms or closed-loop process control systems.
Key Features
- Rotary annular gear mechanism ensures valveless, pulse-minimized fluid delivery with high volumetric efficiency (>92% at nominal load)
- Electrically driven DC precision motor with integrated optical encoder for closed-loop speed feedback and real-time rotational monitoring
- Modular mechanical design supporting rapid field replacement of wetted components—rotors, bearings, and housings—without recalibration
- Chemically inert construction options: ZrO₂ ceramic or tungsten carbide rotors; corrosion-resistant housings in Alloy C22, Alloy C276, or PEEK™
- Compact form factor (approx. 90 mm × Ø16 mm) optimized for space-constrained OEM instrument integration and benchtop automation systems
- Dynamic speed control interface compatible with analog 0–10 VDC input or digital RS-485 Modbus RTU protocol for synchronized multi-pump orchestration
Sample Compatibility & Compliance
The mzr-6355 is engineered for use with aggressive, viscous, or particulate-laden liquids commonly encountered in analytical chemistry, pharmaceutical formulation, and microfluidic synthesis. Its material-selectable architecture enables direct contact with solvents such as acetonitrile, THF, concentrated acids/bases, and halogenated compounds—provided compatible wetted materials are specified during ordering. While not certified to FDA 21 CFR Part 11 out-of-the-box, the pump’s deterministic flow behavior, traceable speed control, and non-volatile configuration memory support audit-ready operation when deployed within validated systems adhering to ISO/IEC 17025, ASTM D3418, or USP <1058> guidelines. It meets CE marking requirements for electromagnetic compatibility (IEC 61000-6-3) and low-voltage safety (IEC 61000-6-2).
Software & Data Management
The mzr-6355 operates natively with HNPM’s S-ND programmable controller and S-KG universal drive module, both offering configurable ramp profiles, flow calibration tables, and runtime logging via SD card or USB export. When integrated into larger systems, its Modbus RTU interface allows bidirectional communication with LabVIEW, Python-based control frameworks (e.g., PyModbus), or industrial SCADA environments. All firmware updates and parameter backups are performed via secure UART connection, ensuring data integrity and version traceability—a prerequisite for GLP-compliant documentation workflows. Audit trails—including start/stop timestamps, cumulative volume counters, and motor current diagnostics—are retained onboard for ≥30 days.
Applications
- Automated reagent dispensing in HPLC/UHPLC solvent delivery modules and ICP-MS sample introduction systems
- Precise catalyst metering in continuous-flow microreactors and photochemical synthesis platforms
- Controlled infusion in preclinical pharmacokinetic studies requiring sub-mL/min dosing accuracy
- Calibration fluid delivery in online process analyzers (e.g., NIR, Raman) for dynamic baseline correction
- Low-shear transfer of shear-sensitive biologics (e.g., monoclonal antibodies, viral vectors) in fill-finish development rigs
- OEM integration into portable diagnostic devices, environmental sensors, and point-of-care testing platforms
FAQ
What is the typical service life of the mzr-6355 under continuous operation?
With proper fluid conditioning and adherence to maximum pressure limits (≤10 bar), the mzr-6355 achieves >10,000 hours MTBF when operated within its specified viscosity range (0.5–500 mPa·s).
Can the mzr-6355 handle abrasive slurries or suspended particles?
It is not recommended for slurries containing particles >5 µm unless equipped with custom oversized clearances and hardened wear surfaces—consult HNPM Engineering for application-specific validation.
Is flow calibration traceable to national standards?
Yes—HNPM provides optional NIST-traceable calibration certificates (ISO/IEC 17025 accredited labs) for volumetric flow rate verification at three points across the operational range.
Does the pump support bidirectional flow?
No—the mzr-6355 is unidirectional by mechanical design; reverse rotation may cause internal leakage or seal compromise.
How is thermal drift compensated during extended temperature-cycling experiments?
The integrated encoder and temperature-stable motor windings maintain speed fidelity within ±0.2% over ambient ranges of 10–40°C; volumetric compensation requires external density/viscosity input via host software.
