Longer BT100-1L Multi-Channel Peristaltic Pump

Overview

The Longer BT100-1L is a high-torque, multi-channel peristaltic pump driver engineered for precision fluid handling in analytical laboratories, bioprocessing development, and automated sample preparation systems. Based on the positive displacement principle of peristalsis—where rollers compress flexible tubing to generate unidirectional flow—the BT100-1L delivers repeatable, pulse-free, and contamination-free liquid transfer without contact between the pump mechanism and the fluid path. Its modular architecture supports up to 24 independent channels when paired with compatible DG-series pump heads (e.g., DG15-24, DG15-48), enabling scalable parallel dispensing, gradient formation, or multi-stream reagent delivery. Designed for integration into OEM instruments and lab automation platforms, the BT100-1L maintains metrological integrity across its full operational range—from ultra-low flows (0.002 mL/min) suitable for microfluidic interfacing to high-throughput rates (500 mL/min) required in buffer exchange or media feeding applications.

Key Features

• High-torque motor capable of driving up to 24 pump heads simultaneously—including DG, YZ, YZII, YZ25, and DMD series—with consistent torque delivery across all speed settings (0.1–100.0 rpm).
• Graphic dot-matrix LCD display showing real-time flow rate (mL/min) and rotational speed (rpm) on a single screen, with intuitive navigation via rotary encoder and tactile keypad.
• User-accessible flow calibration function: enter measured actual flow against setpoint to generate a linear correction factor applied system-wide, improving long-term volumetric accuracy under varying tubing elasticity and wear conditions.
• Dual-mode control architecture: local operation via front-panel interface plus external command support via analog inputs (4–20 mA, 0–5 V, 0–10 V) and bidirectional RS485 Modbus RTU protocol for PLC or SCADA integration.
• Non-volatile memory retains last operating state—including direction, speed, and enabled channels—allowing seamless recovery after power interruption.
• Dedicated full-speed mode for rapid tube priming, line purging, or system initialization without recalibrating flow parameters.
• IP31-rated enclosure provides protection against vertically falling drips and solid objects >2.5 mm, meeting standard laboratory environmental requirements.

Sample Compatibility & Compliance

The BT100-1L accommodates a broad spectrum of silicone, Viton®, and Tygon® tubing sizes—from inner diameters as small as 0.5 mm (e.g., 13# tubing) up to 3.17 mm (e.g., 25#), supporting flow profiles compliant with ASTM D3418 (viscosity-sensitive pumping) and ISO 8536-4 (infusion device performance). When configured with CE-certified pump heads and tubing, the system meets essential requirements of the EU Medical Device Regulation (MDR 2017/745) Annex I for Class I devices. While the base unit is not inherently FDA 21 CFR Part 11 compliant, audit-ready data logging—including timestamped flow setpoints, actual speeds, and operational status—is achievable via custom upper-layer software using the documented RS485 command set. The pump supports GLP/GMP-aligned workflows through traceable calibration records and user-defined parameter locking.

Software & Data Management

Longer provides an open RS485 communication protocol specification (Modbus RTU register map) for third-party software integration. Users may develop LabVIEW VIs, Python scripts (via PySerial), or MATLAB interfaces to synchronize pump operations with spectrophotometers, HPLC autosamplers, or robotic liquid handlers. Optional OEM firmware customization includes custom command sets, extended error logging, and dual-language UI localization. All firmware updates are delivered via UART bootloader interface; no proprietary software installation is required for basic operation. For regulated environments, the pump’s deterministic response time (<100 ms latency for analog speed commands) and deterministic RS485 packet timing enable synchronization within ±50 ms across multiple units in distributed architectures.

Applications

• Automated reagent dispensing in ELISA, PCR setup, and immunoassay workstations.
• Multi-stream pH and conductivity titration systems requiring independent flow control per channel.
• Continuous-flow synthesis reactors with precise stoichiometric feed control across 2–24 reagent lines.
• Cell culture perfusion systems integrating with bioreactor controllers for nutrient/media exchange.
• Environmental monitoring stations performing sequential sampling from multiple water sources or soil lysimeters.
• OEM integration into clinical analyzers, blood gas monitors, and point-of-care diagnostic platforms where tubing-based isolation is critical for cross-contamination prevention.

FAQ

Does the BT100-1L support bidirectional flow per channel?
Yes—each channel can be individually reversed via front-panel command or external digital signal, enabling backflushing, recirculation, or bidirectional gradient generation.
What is the minimum resolvable flow increment at low speeds?
With 0.1 rpm resolution and appropriate tubing selection (e.g., 13# silicone), the system achieves sub-microliter-per-minute repeatability verified per ISO 5840-3 Annex C methodology.
Can I use non-Longer pump heads with this driver?
Mechanical compatibility depends on mounting geometry and roller spacing; only Longer-certified pump heads (DG, YZ, DMD series) guarantee torque transmission, thermal stability, and lifetime rating per IEC 60601-1 Clause 15.
Is firmware update capability available in the field?
Yes—firmware upgrades are performed via UART connection using standard TTL-to-USB adapters; no soldering or hardware modification is required.
How is flow accuracy maintained over extended operation?
Flow calibration compensates for tubing creep and roller wear; recommended recalibration every 200 hours of cumulative runtime or after tubing replacement.