BT50S Precision Variable-Speed Peristaltic Pump with YZ15 or DG-Series Pump Head

Overview

The BT50S Precision Variable-Speed Peristaltic Pump is an engineered solution for accurate, repeatable, and contamination-free fluid transfer in laboratory, analytical, and light industrial environments. Based on the positive displacement principle of peristaltic pumping—where rollers compress flexible tubing to create a sealed, pulsation-dampened flow—the BT50S delivers high-fidelity volumetric delivery without exposing internal components to the fluid path. Its design eliminates valves, seals, and wetted metal parts, ensuring chemical compatibility across a broad range of solvents, buffers, reagents, and biological media. The pump is particularly suited for applications requiring low-flow precision (down to 0.00016 mL/min), gentle shear-sensitive handling (e.g., cell suspensions, enzymes, or nanoparticles), and long-term unattended operation under regulated conditions.

Key Features

• Precision speed control from 0.1 to 50 rpm with 0.1 rpm resolution—enabling fine-grained adjustment for ultra-low or high-throughput flows.
• Four-digit LED display showing real-time speed and operational mode (run, reverse, full-speed clean, standby).
• Status-indicating LEDs for internal control, external trigger, and foot-switch activation—supporting intuitive visual diagnostics during multi-step protocols.
• Membrane keypad interface with tactile feedback and non-volatile memory: retains last-used speed and direction settings after power loss (power-fail recovery).
• Dedicated “Dispense” key for repeatable, single-shot volumetric dispensing—ideal for serial dilution, sample aliquoting, or calibration standard preparation.
• 304 stainless steel enclosure with electrophoretic coating—resistant to acids, alkalis, and organic solvents; rated IP31 for dust and drip protection.
• Triple-conformal-coated PCBs—enhancing reliability in humid or particulate-laden lab environments (IEC 60664-1 compliant insulation).
• Wide-input voltage tolerance (±10%) and robust EMI suppression—ensuring stable performance in shared electrical infrastructure typical of core facilities and QC labs.
• Opto-isolated digital I/O (5 V / 12 V / 24 V selectable)—enabling safe integration with PLCs, DAQ systems, or custom automation controllers without ground-loop risk.

Sample Compatibility & Compliance

The BT50S supports interchangeable pump heads—including the widely adopted YZ15 for high-flow versatility (up to 190 mL/min with #25 tubing) and the DG10-1/DG10-2 series for enhanced low-flow stability and pulse minimization (as low as 0.00016 mL/min). Compatible tubing includes PharmPure® silicone, Tygon® LFL, C-Flex®, and other USP Class VI-certified elastomers—ensuring compliance with ISO 10993 biocompatibility requirements where applicable. While the BT50S itself is not CE-marked or FDA-listed as a medical device, its construction and control architecture align with GLP/GMP documentation expectations: MODBUS-enabled audit trails (when integrated with compliant SCADA), deterministic timing for dispense cycles, and traceable parameter logging via host software. It meets IEC 61326-1 for electromagnetic compatibility in laboratory use.

Software & Data Management

The RS485 interface implements MODBUS RTU protocol (slave mode, address 1–247), allowing bidirectional communication with LabVIEW™, Python-based control scripts (via PyModbus), or industrial HMIs. Users can remotely configure speed, direction, run time, and dispense volume; query real-time status (running/stopped, direction, error flags); and initiate emergency stop or full-speed purge. When paired with a compliant data acquisition system, all command executions and state transitions may be timestamped and archived—supporting 21 CFR Part 11–aligned electronic records if implemented within a validated environment. No proprietary software is required; open protocol support facilitates integration into existing LIMS or MES workflows.

Applications

• Automated sample introduction in HPLC, IC, and flow-injection analysis (FIA) systems.
• Controlled reagent dosing in enzymatic assays, microbial fermentation monitoring, and titration platforms.
• Cell culture media exchange and perfusion in bioreactor auxiliary loops (non-sterile primary loop).
• Calibration standard delivery in environmental testing labs (e.g., EPA Method 300.0, ASTM D511).
• Low-shear transfer of fragile colloids, liposomes, or antibody-conjugated particles in formulation development.
• Integration into custom-built analyzers for water quality (e.g., nitrate/nitrite colorimetry) or food safety screening (e.g., mycotoxin ELISA prep).

FAQ

What tubing sizes are supported with the YZ15 pump head?
The YZ15 accommodates standard peristaltic tubing sizes #13, #14, #16, #19, #25, #17, and #18—delivering flow ranges from 0.006 to 190 mL/min depending on tubing ID and pump speed.
Can the BT50S operate continuously for extended periods?
Yes—designed for 24/7 duty cycle under ambient lab conditions (≤40 °C, <80% RH); thermal management and brushless DC motor design ensure long-term reliability without degradation in flow accuracy.
Is MODBUS register mapping documentation available?
Yes—full MODBUS RTU register map (holding registers for speed setpoint, direction, dispense volume, status bits, and error codes) is provided in the technical manual upon request.
Does the pump support analog speed control (e.g., 0–10 V or 4–20 mA)?
No—the BT50S accepts only digital control signals (opto-isolated TTL/CMOS levels or RS485); analog input is not implemented.
What certifications does the BT50S hold?
It complies with IEC 61326-1 (EMC for laboratory equipment) and conforms to RoHS 2011/65/EU; CE marking is not applied as it is supplied through authorized distribution channels for integration into end-user systems.