HNPM MZR-7208X1 High-Precision Micro-Dispensing Pump
| Brand | HNPM |
|---|---|
| Origin | Germany |
| Model | MZR-7208X1 |
| Flow Rate | 0.048–288 mL/min |
| Viscosity Range | 0.3–50,000 mPa·s (up to 1,000,000 mPa·s with optional configuration) |
| Precision (CV) | <1% |
| Speed Range | 1–6000 rpm |
| Displacement | 48 µL |
| Minimum Dose | 30 µL |
| Pressure Differential | 0–30 bar (at 1 mPa·s), up to 120 bar (≥16 mPa·s) |
| Max. Inlet Pressure | 5 bar (10–40 bar optional) |
| Wetted Materials | SS 316L, tungsten carbide, Ni-based alloys |
| Shaft Seal | graphite-reinforced PTFE + SS 316L |
| Static Seals | FPM (standard), EPDM/FFPM optional |
| Motor | Brushless DC servo, 36 V DC, 201 W, IP54, 192 mNm continuous torque |
| Encoder | 1000 pulses/rev, analog Hall sensor |
| Dimensions (L×W×H) | 211 × 84 × 93 mm |
| Weight | ~1500 g |
| Operating Temperature | −5 to +60 °C (−20 to +150 °C with optional configuration) |
| Fluid Connections | 1/8" NPT internal thread (lateral option available) |
Overview
The HNPM MZR-7208X1 is a high-precision, low-pulsation micro-dispensing pump engineered for demanding industrial process applications requiring reproducible, metered delivery of liquids across an exceptionally broad viscosity spectrum—from low-viscosity solvents (e.g., methanol, water, acetone) to highly viscous media such as adhesives, greases, gels, inks, and coatings. Based on rotary micro annular gear technology, the pump operates on positive displacement principles, ensuring volumetric accuracy independent of backpressure fluctuations—critical for closed-loop dosing in pressurized systems. Its compact architecture integrates a high-torque brushless DC servo motor with integrated encoder feedback, enabling precise speed control and real-time rotational monitoring. Unlike peristaltic or syringe-based systems, the MZR-7208X1 eliminates elastomer degradation, plunger stiction, and pulsatile flow artifacts—making it suitable for continuous operation in GLP-compliant QC laboratories, automated coating lines, microfluidic reagent dispensing, and high-pressure chemical synthesis setups.
Key Features
- Rotary micro annular gear mechanism delivering inherently low pulsation (<±0.5% peak-to-peak) and minimal shear stress—preserving integrity of shear-sensitive formulations.
- Wide operational viscosity range: validated from 0.3 mPa·s (deionized water) to 50,000 mPa·s (standard configuration); extended capability up to 1,000,000 mPa·s with customized rotor geometry and thermal management.
- High metrological fidelity: coefficient of variation (CV) <1% under steady-state conditions, verified per ISO 5725-2 for repeatability and intermediate precision.
- Robust wetted path constructed from corrosion-resistant SS 316L (1.4404/1.4435), tungsten carbide rotors, and nickel-based alloys—compatible with aggressive solvents, halogenated compounds, and high-pH aqueous media.
- Integrated 1000-pulse-per-revolution analog Hall-effect encoder enables closed-loop speed regulation and traceable rotational auditing—essential for FDA 21 CFR Part 11–compliant environments.
- Compact footprint (211 × 84 × 93 mm) and lightweight design (~1.5 kg) facilitate integration into OEM equipment, robotic workcells, and modular process skids without structural reinforcement.
Sample Compatibility & Compliance
The MZR-7208X1 accommodates a wide array of process fluids including—but not limited to—aqueous solutions, organic solvents (methanol, THF, DMF), mineral and synthetic oils, UV-curable resins, epoxy prepolymers, silicone gels, and pigment dispersions. All fluid-contact surfaces comply with USP Class VI and EC 1935/2004 food-contact regulations. Static seals are supplied as FPM (Viton®) as standard, with EPDM and perfluoroelastomer (FFPM) options available for enhanced chemical resistance. The pump meets CE marking requirements under the Machinery Directive 2006/42/EC and Electromagnetic Compatibility Directive 2014/30/EU. For regulated pharmaceutical manufacturing, optional documentation packages include Factory Acceptance Test (FAT) reports, material certifications (EN 10204 3.1), and calibration certificates traceable to PTB (Physikalisch-Technische Bundesanstalt).
Software & Data Management
The MZR-7208X1 supports analog (0–10 V / 4–20 mA) and digital (RS-485 Modbus RTU, CANopen optional) interfaces for seamless integration into SCADA, PLC, or LabVIEW-controlled environments. HNPM’s proprietary PumpControl software provides real-time monitoring of rotational speed, cumulative volume dispensed, motor current draw, and thermal status—logging data at user-defined intervals with timestamping and CSV export. Audit trails include operator ID, parameter changes, and emergency stop events—fully compliant with ALCOA+ data integrity principles. When deployed with a validated PC host system, the configuration satisfies FDA 21 CFR Part 11 requirements for electronic records and signatures, including role-based access control, electronic signatures, and immutable log archiving.
Applications
- Precise metering of catalysts and initiators in continuous-flow polymerization reactors.
- Automated dispensing of conductive inks and dielectric pastes in printed electronics manufacturing.
- Controlled delivery of calibration standards and reference materials in environmental and clinical analyzers.
- Dosing of lubricants and anti-wear additives in tribological test rigs (ASTM D4172, ISO 12156-1).
- Reagent introduction in microreactor platforms for high-throughput reaction screening.
- Continuous feeding of viscous photoresists and spin-coating precursors in semiconductor pilot lines.
FAQ
What is the minimum measurable dose per dispense cycle?
The smallest discrete volume deliverable is 30 µL, achieved at the lowest operational speed (1 rpm) and full stroke displacement (48 µL). Sub-microliter resolution is attainable via pulse-width modulation when paired with external motion controllers.
Can the pump handle abrasive suspensions or particulate-laden fluids?
Yes—tungsten carbide rotor surfaces provide exceptional wear resistance. However, particles >5 µm require upstream filtration (e.g., 5-µm sintered stainless steel filter) to prevent rotor groove abrasion and seal wear.
Is the MZR-7208X1 suitable for sterile or aseptic processes?
While not autoclavable, the pump head can be sterilized via ethanol immersion or vapor-phase hydrogen peroxide (VPHP) treatment. Optional CIP/SIP-compatible versions with tri-clamp end fittings and electropolished wetted surfaces are available upon request.
How is flow rate calibrated and verified?
Calibration is performed gravimetrically using certified analytical balances (ISO/IEC 17025 accredited labs) across three viscosity points (1, 1000, and 10,000 mPa·s) and five flow rates per point. Certificate includes uncertainty budgets per GUM (JCGM 100:2008).
What maintenance intervals are recommended for continuous 24/7 operation?
Under nominal load (≤70% max torque), routine inspection—including seal integrity check, encoder alignment verification, and motor winding resistance measurement—is advised every 2,000 operating hours. Full service (bearing replacement, rotor surface metrology) is scheduled at 10,000 hours.
