Longer L300-1F Intelligent Touchscreen Peristaltic Pump

Overview

The Longer L300-1F is an intelligent, microprocessor-controlled peristaltic pump engineered for precision fluid handling in regulated laboratory, pilot-scale bioprocessing, and pharmaceutical manufacturing environments. Based on the fundamental principle of peristalsis—where rollers compress flexible tubing to generate positive displacement—the L300-1F delivers pulse-free, contamination-free flow without valving or seals contacting the fluid path. Its closed-system architecture ensures full fluid isolation, making it suitable for sterile, shear-sensitive, or hazardous media. Designed for reproducible volumetric delivery across variable viscosity and particulate load conditions, the pump integrates real-time speed control, programmable multi-step sequencing, and traceable parameter management—aligning with core requirements of GLP-compliant workflows and early-stage process development.

Key Features

• Auto-recognition of pump head and tubing models via NFC-enabled identification tags—eliminates manual model entry errors and ensures accurate flow calibration
• 7-inch high-resolution color TFT touchscreen with intuitive graphical interface supporting multi-language operation (English/Chinese)
• Advanced programmability: up to 7 user-defined application schemes, each containing up to 10 sequential steps with independent speed, duration, direction, and logic triggers
• Nine built-in motion control modules: constant speed, linear acceleration/deceleration, stepwise ramping, sinusoidal modulation, uniform/incremental/decremental dispensing
• Eight logic control functions: directional switching, time delay, event-based triggering, status output, pause/resume, conditional jump, loop iteration, and emergency stop
• Multi-modal control support: local touchscreen, footswitch, 0–5 V / 0–10 V analog input, digital I/O (RJ11), serial communication (DB9), and USB host/device connectivity
• Modbus RTU protocol compliance (1200–38400 bps) enables seamless integration into SCADA, PLC, and LIMS platforms for centralized monitoring and audit trail generation
• On-device flow calibration function: users input measured dispensed volume to auto-adjust displayed flow rate and cumulative volume readings

Sample Compatibility & Compliance

The L300-1F accommodates a wide range of peristaltic tubing materials—including silicone, Viton®, Tygon®, and Pharmapure®—with inner diameters from 0.5 mm to 6.4 mm, enabling flow rates from sub-mL/min up to 1500 mL/min depending on tubing selection and rotational speed. Its design supports compatibility with ISO 8536-4 compliant infusion sets and USP Class VI-certified tubing where required. While the base unit meets CE marking requirements upon explicit customer request (to be specified at order stage), all firmware and operational logic adhere to principles aligned with FDA 21 CFR Part 11 for electronic record integrity—supporting configurable audit trails, user access levels, and parameter change logging when integrated into validated systems.

Software & Data Management

The pump’s embedded firmware implements deterministic real-time scheduling for precise timing resolution down to 0.5-second intervals across all delay, interval, and duration settings. All programmable schemes—including step definitions, logic conditions, and external signal mappings—are stored non-volatile memory with write-cycle endurance exceeding 100,000 cycles. Status outputs (e.g., “running”, “paused”, “direction A/B”, “step complete”) are available as TTL-level digital signals via DB9 pinout, facilitating hardware synchronization with auxiliary equipment such as fraction collectors or pH controllers. USB connectivity allows firmware updates and backup/restore of configuration files using standard FAT32-formatted drives—no proprietary software required. For enterprise deployment, the Modbus register map provides full read/write access to all operational parameters, enabling third-party software to log runtime data, enforce SOP-driven execution sequences, and generate CSV-formatted batch records.

Applications

• Automated reagent dosing and buffer exchange in chromatography system priming and column equilibration
• Controlled feed addition in microbial fermentation and cell culture bioreactors
• Continuous sampling and dilution in inline process analytical technology (PAT) setups
• High-accuracy liquid transfer in QC/QA testing labs requiring repeatable volume delivery under GLP conditions
• Integration into custom-built diagnostic analyzers for sample aspiration, wash cycle actuation, and waste evacuation
• Pharmaceutical formulation R&D involving low-shear pumping of suspensions, emulsions, and protein solutions

FAQ

Does the L300-1F support regulatory-compliant audit trails?
The pump itself does not generate electronic signatures or user-authenticated logs internally; however, its Modbus interface exposes all state changes and parameter modifications, allowing external supervisory systems to capture timestamped, attributable records in accordance with 21 CFR Part 11 when deployed within a validated infrastructure.
Can tubing wear be compensated during long-term operation?
Yes—through periodic recalibration using the on-screen flow verification utility, users can adjust the displayed flow rate based on gravimetric or volumetric measurement of actual delivered volume, maintaining accuracy over extended tubing service life.
Is the touch screen operable with gloved hands in cleanroom environments?
The 7-inch projected capacitive touchscreen supports passive stylus and gloved-finger operation, and its IP31-rated front panel provides protection against incidental dust ingress and vertical dripping—suitable for ISO Class 7/8 environments when installed within appropriate enclosures.
What safety mechanisms prevent motor overload or tube occlusion damage?
The drive electronics continuously monitor current draw and thermal rise; automatic shutdown occurs if sustained overcurrent or abnormal rotor resistance is detected—protecting both motor windings and tubing integrity.
How many external devices can be synchronized using the DB9 I/O port?
The DB9 connector provides six programmable digital I/O lines (three inputs, three outputs), supporting discrete handshaking with up to three independent peripherals—for example, a peristaltic pump controller, a level sensor, and a solenoid valve—all coordinated through logic-triggered events in the pump’s internal sequence engine.