LeadFluid BQ80S Variable-Speed Peristaltic Pump

Overview

The LeadFluid BQ80S Variable-Speed Peristaltic Pump is an industrial-grade, microprocessor-controlled peristaltic pump engineered for precise, repeatable, and contamination-free fluid handling in laboratory, pilot-scale, and light industrial applications. Based on the proven principle of peristalsis—where rollers compress flexible tubing to generate unidirectional flow—the BQ80S eliminates fluid contact with internal mechanical components, ensuring absolute chemical isolation and eliminating cross-contamination risks. Its Cortex-M3 32-bit ARM processor delivers deterministic real-time control, enabling high-resolution speed regulation (0.1 rpm resolution) and stable operation across its full speed range (0.1–80 rpm). Designed for integration into automated systems, the pump supports both local HMI operation and robust external control via isolated digital and analog I/O, making it suitable for use in GLP-compliant workflows, process validation environments, and OEM fluid-handling modules.

Key Features

• High-precision speed control with <±0.2% accuracy and 0.1 rpm resolution, validated across the entire operational range
• Intuitive dual-language (English/Chinese) LCD interface with one-touch language toggle and real-time status feedback (speed, direction, elapsed time, remaining cycles)
• Programmable dispensing logic: adjustable run time (0.1 s to 999 days), interval time (0.1 s to 999 days), and cycle count (1–999 or continuous)
• Soft-stop functionality minimizes tubing rebound and pressure transients, extending tubing service life and improving volumetric reproducibility
• Galvanically isolated external control inputs: dry-contact or 5–24 V logic-level signals for start/stop and forward/reverse commands
• Configurable analog speed input: supports 0–5 V, 0–10 V, or 4–20 mA standards—user-selectable via front-panel menu
• RS485 serial interface compliant with Modbus RTU protocol (function codes 03h/06h/10h), enabling remote parameter configuration and status polling
• IP31-rated injection-molded enclosure resistant to common organic solvents (e.g., ethanol, isopropanol, acetone), facilitating cleanroom-compatible maintenance
• Conformal-coated PCB with enhanced moisture and dust resistance; wide-input AC power supply (100–240 V, 50/60 Hz) ensures global deployment readiness

Sample Compatibility & Compliance

The BQ80S accommodates standard silicone or fluoropolymer tubing with inner diameters up to 3.17 mm and wall thicknesses between 0.8 mm and 1.0 mm. It is compatible with two pump head configurations: the single-channel DW10-1 and triple-channel DW10-3—both designed for rapid, tool-free tubing loading and consistent occlusion geometry. While the pump itself does not require calibration traceability per ISO/IEC 17025, its programmable timing and speed parameters support audit-ready documentation when integrated into validated processes. The device meets CE marking requirements for electromagnetic compatibility (EN 61326-1) and low-voltage safety (EN 61010-1), and its Modbus interface facilitates compliance with FDA 21 CFR Part 11 when deployed with appropriate system-level electronic record controls (e.g., audit trail logging, user authentication).

Software & Data Management

The BQ80S operates as a standalone instrument but is fully interoperable within supervisory control architectures. Its Modbus RTU implementation allows seamless integration with PLCs, SCADA systems, and LabVIEW-based data acquisition platforms. All operating parameters—including speed setpoint, dispensing duration, cycle count, and direction—are readable and writable via standard Modbus registers. For ODM partners, LeadFluid provides open register mapping documentation and firmware customization options, including custom command sets and extended error-code reporting. Local data persistence (power-loss memory) retains the last active configuration, reducing setup overhead during routine restarts. No proprietary software is required; configuration can be performed entirely through the front panel or via industry-standard Modbus utilities.

Applications

• Automated reagent dispensing in analytical chemistry labs and clinical diagnostic instruments
• Continuous feed control in small-scale bioreactors and fermentation monitoring systems
• Calibration standard delivery in liquid chromatography (LC) and capillary electrophoresis (CE) platforms
• Waste aspiration and wash buffer delivery in ELISA and immunoassay automation
• OEM integration into environmental monitoring stations requiring low-maintenance, chemically inert fluid transfer
• Process development workflows where programmable pulse-and-hold dispensing improves yield consistency

FAQ

What tubing sizes are supported by the BQ80S?
The pump supports tubing with inner diameters ≤3.17 mm and wall thicknesses of 0.8–1.0 mm—compatible with standard Pharmapure®-grade silicone and FEP-lined tubing.

Can the BQ80S operate in continuous mode without cycling?
Yes. Setting the dispense count to “0” enables indefinite continuous operation until manually stopped or interrupted by an external signal.

Is the RS485 interface galvanically isolated?
No—the RS485 transceiver is not isolated, but all digital and analog control inputs feature optical or relay-based isolation to prevent ground-loop interference.

Does the pump support bidirectional flow with equal precision in both directions?
Yes. Forward and reverse rotation are implemented with identical speed resolution, torque profile, and timing accuracy—critical for backflush and recirculation protocols.

How is tubing life affected by the soft-stop function?
Soft-stop reduces mechanical shock at motor deceleration, lowering peak stress on tubing material and extending usable lifespan by up to 35% compared to abrupt stop profiles under equivalent duty cycles.