LSP H High-Pressure Touchscreen Syringe Pump by Acmer

Overview

The LSP H High-Pressure Touchscreen Syringe Pump is an engineered precision fluid delivery system designed for demanding laboratory applications requiring stable, low-flow-rate infusion or withdrawal of viscous, high-density, or shear-sensitive media. Based on stepper motor-driven linear actuation and calibrated syringe displacement, the pump operates on a volumetric displacement principle—translating precise angular motor steps into controlled plunger movement with traceable volumetric output. Its robust mechanical architecture supports sustained high-force operation (up to 50 kgf typical, dependent on syringe barrel geometry and material), enabling reliable delivery of challenging fluids such as polymer melts, nanoparticle suspensions, hydrogels, and concentrated biological reagents. Unlike peristaltic or diaphragm-based systems, the LSP H eliminates pulsation and tubing compliance errors, delivering true laminar, pulseless flow essential for microfluidics integration, chromatography sample introduction, electrophysiology perfusion, and long-duration pharmacokinetic studies.

Key Features

• 5-inch high-resolution capacitive touchscreen interface with intuitive icon-based navigation and real-time parameter visualization
• Built-in syringe library covering major global manufacturers (e.g., Hamilton, BD, SGE, Ito, Nanotemper) with preloaded inner diameter, stroke length, and volume data for >120 standard syringe models
• User-definable syringe profiles supporting custom glass, metal, or plastic barrels with manual calibration via volume-displacement verification
• Full bidirectional control: programmable infusion, withdrawal, and alternating multi-step protocols with independent timing parameters (infusion time, withdrawal time, pause interval, cycle count)
• Real-time dynamic flow rate adjustment during active operation without interrupting sequence execution
• Non-volatile memory retention: all running parameters—including position, speed, direction, and elapsed time—are preserved across power loss and restored automatically on restart
• Intelligent force management: adjustable push force limit per syringe model to prevent barrel fracture or seal extrusion under high-viscosity conditions
• Dual external control options: TTL-compatible digital input (5–24 V logic level or dry contact) for remote start/stop, plus opto-isolated status outputs (RUN, DIR, ALARM)
• Standard RS485 Modbus RTU and USB virtual COM port interfaces; address and baud rate configurable directly from touchscreen

Sample Compatibility & Compliance

The LSP H accommodates syringes from 1 µL to 100 mL capacity, including glass, polypropylene, stainless steel, and PTFE-lined barrels. It supports single- and dual-syringe configurations for push-pull or continuous flow setups. All firmware and hardware design comply with IEC 61000-6-2 (immunity) and IEC 61000-6-3 (emission) standards. While not certified for in vivo medical use, the device meets general laboratory safety requirements per IEC 61010-1 and is suitable for GLP-compliant environments when operated within validated protocols. Audit trail functionality (via external logging software) supports traceability in regulated QC/QA workflows aligned with ISO/IEC 17025 and FDA 21 CFR Part 11 principles where electronic records are maintained externally.

Software & Data Management

The pump operates autonomously via onboard firmware but integrates seamlessly with third-party control platforms through open-protocol RS485 or USB CDC communication. Command sets follow ASCII-based Modbus register mapping, enabling direct scripting in Python, LabVIEW, MATLAB, or C# environments. Optional PC software (Acmer PumpControl Suite v2.1) provides graphical protocol builder, real-time flow monitoring, CSV export of timestamped position/flow logs, and batch parameter import/export. All calibration coefficients and user-defined syringe profiles are stored in protected EEPROM sectors with write-cycle endurance >100,000 cycles.

Applications

• Microfluidic chip priming and reagent loading in organ-on-a-chip and droplet generation systems
• Precise solvent delivery in preparative HPLC and supercritical fluid chromatography (SFC)
• Controlled infusion of contrast agents or radiolabeled tracers in preclinical imaging studies
• Long-term cell culture media exchange in bioreactors and perfusion-based tissue engineering scaffolds
• Calibration fluid dispensing for gravimetric and spectrophotometric instrument validation
• Low-flow electrospinning precursor delivery and nanofiber deposition control

FAQ

What syringe sizes and materials are supported?
The LSP H supports syringes ranging from 1 µL capillaries to 100 mL industrial barrels, including borosilicate glass, polypropylene, stainless steel, and fluoropolymer-coated variants.
Is the pump compatible with sterile or closed-system applications?
Yes—when paired with luer-lock or integrated fluidic manifolds and sterilizable syringes, it meets ISO 13485-aligned handling requirements for aseptic processes.
Can multiple LSP H units be synchronized?
Yes—via RS485 daisy-chaining with Modbus addressing, up to 32 units can be coordinated under a single host controller for multi-channel parallel dosing.
Does the pump support gradient or ramped flow profiles?
It supports stepwise flow changes within a sequence; continuous linear ramps require external software orchestration via USB/RS485 command streaming.
How is accuracy verified and maintained over time?
Accuracy is maintained through periodic syringe-specific calibration using gravimetric or volumetric reference methods; calibration coefficients are retained in non-volatile memory and applied automatically during operation.