LongerPump dLSP 501X Digital Split-Body Syringe Pump
| Brand | LongerPump |
|---|---|
| Origin | Hebei, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | dLSP 501X |
| Instrument Type | Micro-syringe Pump |
| Flow Rate | 0.6096 µm/min – 190.5 mm/min |
| Accuracy | ≤ ±0.35% (when stroke ≥ 30% of maximum stroke) |
| Repeatability | 0.03% (at rated stroke) |
Overview
The LongerPump dLSP 501X is a high-precision digital split-body syringe pump engineered for controlled, low-volume fluid delivery in analytical, pharmaceutical, and life science laboratories. Unlike monolithic designs, its modular architecture separates the drive mechanism from the syringe mounting module—enabling flexible integration into custom rigs, glove boxes, or confined spaces while maintaining mechanical rigidity and thermal stability. The system operates on stepper motor-driven linear actuation, translating rotational motion into precise axial displacement of the syringe plunger. This fundamental principle ensures deterministic volumetric delivery independent of fluid viscosity or backpressure within operational limits—critical for applications demanding trace-level dosing accuracy and long-term flow stability.
Key Features
- Modular split-body design: Independent motor unit and syringe carriage allow spatial decoupling—ideal for sterile environments, vacuum chambers, or multi-axis robotic platforms.
- 7-inch HD capacitive touchscreen (1024 × 600 resolution): Intuitive GUI with real-time flow visualization, parameter validation, and on-device diagnostics.
- Four-channel capability: Each execution unit supports fully independent configuration—including flow direction, rate profile, volume limits, and pause conditions—without shared timing constraints.
- Multi-mode operation: Programmable sequences include infusion-only, withdrawal-only, bidirectional (infuse-then-withdraw or withdraw-then-infuse), and time-based step programming with up to 100 user-defined segments per protocol.
- Robust control interface: RS485 communication with Modbus RTU protocol enables deterministic command-response latency (<50 ms) and synchronization across distributed pump nodes in automated workflows.
- Compliance-ready firmware: Built-in audit trail logging, electronic signature capture, three-tier password protection (operator, supervisor, administrator), and screen lockout—aligned with GLP/GMP documentation requirements.
Sample Compatibility & Compliance
The dLSP 501X accommodates standard Luer-lock syringes ranging from 0.5 mL to 60 mL, supporting both glass and polypropylene barrels. Its non-contact plunger detection and adaptive torque compensation minimize stiction-induced error during start-stop transitions—particularly beneficial for viscous or particulate-laden media (e.g., cell suspensions, polymer solutions, or nanoparticle dispersions). The device meets IEC 61010-1:2010 safety standards for laboratory electrical equipment and complies with electromagnetic compatibility (EMC) requirements per EN 61326-1:2013. While not FDA-cleared as a medical device, its firmware architecture supports 21 CFR Part 11-compliant data integrity practices when deployed in regulated QC/QA environments under documented SOPs.
Software & Data Management
All operational parameters—including flow profiles, channel assignments, and safety thresholds—are stored as encrypted .cfg files directly on the internal flash memory. Users may export/import configurations via USB mass storage mode, enabling rapid replication across identical units in parallel assay setups. Remote supervision is achievable through third-party SCADA systems or custom Python/LabVIEW drivers leveraging the published Modbus register map. Event logs record timestamped entries for every parameter change, manual override, error condition, and user login—retained for ≥30 days with automatic rollover. Audit trails are digitally signed and tamper-evident, satisfying traceability mandates in ISO/IEC 17025-accredited testing laboratories.
Applications
- Microfluidic chip priming and reagent loading in organ-on-chip and droplet generation platforms.
- Controlled addition of catalysts or initiators in polymerization kinetics studies.
- Calibration fluid delivery in HPLC and IC autosampler validation protocols.
- Chronic drug infusion modeling in preclinical pharmacokinetic assays.
- Sequential washing and elution steps in solid-phase extraction (SPE) and affinity chromatography manifolds.
- Low-flow perfusion in electrochemical flow cells and biosensor calibration rigs.
FAQ
What syringe sizes are supported by the dLSP 501X?
Standard Luer-lock syringes from 0.5 mL to 60 mL, including glass and polypropylene variants with nominal barrel diameters between 4.5 mm and 32 mm.
Can multiple dLSP 501X units be synchronized for coordinated delivery?
Yes—via RS485 daisy-chaining and Modbus RTU master-slave configuration, enabling phase-aligned start triggers and interlock-based conditional sequencing.
Is the touchscreen interface compatible with gloved operation?
The capacitive display supports stylus and gloved-finger input; sensitivity is adjustable in system settings to accommodate nitrile or latex gloves.
How is calibration traceability maintained?
Factory calibration certificates reference NIST-traceable flow standards; users may perform in-house verification using gravimetric or timed-volumetric methods per ASTM D3417 or ISO 8504-2.
Does the device support continuous infusion beyond 24 hours?
Yes—the firmware includes watchdog timers and thermal monitoring; uninterrupted operation is validated for ≥168 hours at ambient temperatures ≤30°C and relative humidity <70% RH.
