Longer LSP01-1BH High-Pressure Single-Channel Syringe Pump

Overview

The Longer LSP01-1BH is a high-precision, single-channel high-pressure syringe pump engineered for demanding laboratory applications requiring accurate, repeatable, and robust fluid delivery under elevated backpressure conditions. Based on stepper-motor-driven linear actuation and microstepping control, the LSP01-1BH delivers calibrated volumetric flow by converting rotational motion into precise axial displacement of the syringe plunger. Its rated linear force exceeds 450 N—enabling reliable operation with viscous reagents, polymer solutions, slurries, and high-viscosity reaction mixtures commonly encountered in catalysis, microfluidics, electrochemistry, and continuous-flow synthesis. Designed for integration into automated lab systems or standalone use, the pump supports injection, withdrawal, bidirectional cycling, and continuous infusion protocols—making it suitable for both quantitative dosing and dynamic process control in research and quality assurance environments.

Key Features

• High-force actuation system (>450 N) optimized for high-viscosity and high-backpressure applications
• Wide syringe compatibility: accommodates standard glass or plastic syringes from 10 µL to 100 mL (e.g., 2.5 mL, 10 mL, 50 mL, 100 mL), with built-in database for major manufacturers and manual inner-diameter input
• Five programmable operating modes: Infuse only, Withdraw only, Infuse-then-Withdraw, Withdraw-then-Infuse, and Continuous cycle
• High-resolution linear control: 0.156 µm stroke resolution and 5 µm/min speed resolution ensure fine-grained parameter tuning
• Real-time parameter display on large LCD screen: selectable units for volume, flow rate, or linear speed
• Dual-stage safety architecture: mechanical limit block adjustment prevents syringe barrel damage; electronic stall detection halts motion and triggers audible alarm upon occlusion
• Non-volatile EEPROM memory retains all user settings—including flow parameters, mode selection, and calibration offsets—across power cycles
• RS-485 serial interface compliant with Modbus RTU protocol for remote configuration, monitoring, and synchronization with PLCs or host software

Sample Compatibility & Compliance

The LSP01-1BH supports chemically inert syringe materials including borosilicate glass, polypropylene, and PTFE-lined barrels—ensuring compatibility with organic solvents, strong acids/bases, and reactive intermediates. Its mechanical design conforms to IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions) standards. While not certified for medical device use, the pump meets general-purpose laboratory equipment requirements under ISO/IEC 17025-aligned workflows. For regulated environments (e.g., GLP or GMP labs), audit-trail-capable software integration via RS-485 enables traceable parameter logging, user access control, and electronic signature support when paired with compliant host applications.

Software & Data Management

The pump operates autonomously but is fully controllable via RS-485 using industry-standard ASCII command sets or Modbus RTU registers. Third-party software platforms—including LabVIEW, Python (pySerial), MATLAB, and custom SCADA systems—can configure run sequences, monitor real-time status (e.g., current position, direction, error flags), and log timestamped operational data. Two open-collector output signals provide hardware-level feedback for external logic (e.g., “running” and “direction”), while two TTL-compatible inputs allow external triggering of start/stop commands—including edge-triggered initiation for synchronized multi-instrument experiments. Optional firmware updates extend functionality and improve communication stability over time.

Applications

• Controlled reagent addition in heterogeneous catalysis and flow reactor studies
• Precise delivery of viscous electrolytes or slurries in battery R&D and electrode coating processes
• Calibration and validation of analytical instrumentation (e.g., HPLC autosamplers, ICP-MS nebulizers)
• Microscale synthesis where stoichiometric accuracy and timing are critical
• Cell culture media perfusion and drug dosing in organ-on-chip platforms
• Method development for USP dissolution testing and pharmacokinetic modeling

FAQ

What syringe sizes are supported, and how is flow rate calculated?

The LSP01-1BH accepts syringes from 10 µL to 100 mL. Flow rate is derived from user-input syringe inner diameter and commanded linear speed using the formula Q = π × (d/2)² × v. The pump includes a built-in library of common syringe models to minimize manual entry errors.

Does the pump support flow calibration against gravimetric or volumetric standards?

Yes—integrated liquid volume calibration allows users to perform end-to-end flow verification using a precision balance or calibrated cylinder. Correction factors are stored per syringe size and applied automatically during subsequent runs.

Can multiple LSP01-1BH units be daisy-chained on one RS-485 bus?

Yes—up to 32 devices can share a single RS-485 network using unique node addresses. Each unit responds only to commands addressed to its configured ID.

Is there protection against syringe breakage due to overpressure?

While the pump does not include pressure sensors, its dual-limit safety system—comprising adjustable mechanical stops and stall-detection logic—prevents excessive force application that could fracture glass syringes or deform plastic barrels.

How is traceability ensured in regulated environments?

When integrated with validated host software supporting 21 CFR Part 11 features (e.g., electronic signatures, audit trails, role-based access), the LSP01-1BH’s RS-485 interface enables full operational traceability—including parameter changes, run logs, and fault events.