Longer WT600-2J Precision Peristaltic Pump

Overview

The Longer WT600-2J Precision Peristaltic Pump is an engineered solution for accurate, repeatable, and maintenance-free fluid transfer in laboratory research, analytical sample preparation, bioprocessing development, and small-batch manufacturing environments. Based on the peristaltic principle—where rollers compress flexible tubing to create a moving occlusion—the WT600-2J delivers contamination-free, pulse-stable flow without exposing the fluid path to valves, seals, or wetted metal components. Its brushless DC motor architecture ensures high torque output, low mechanical vibration, and extended service life with zero routine maintenance. Designed for integration into automated workflows, the pump supports both standalone operation via intuitive front-panel controls and seamless system-level coordination through analog and digital interfaces.

Key Features

• High-Torque Brushless DC Drive: Delivers consistent rotational force across the full 60–600 rpm range, enabling reliable actuation of dual-channel pump heads and high-resistance tubing configurations.
• Multi-Mode Control Architecture: Combines manual operation (rotary knob + push-button interface) with external analog control (4–20 mA, 0.5–5 V, 0–10 V, or 1–10 kHz frequency input) and bidirectional RS485 Modbus RTU communication for programmable logic controller (PLC) or SCADA integration.
• Intelligent Power Management: Built-in power-loss memory retains the last configured speed, direction, and device address; automatic resumption occurs upon power restoration without manual reconfiguration.
• Dedicated Full-Speed Mode: Single-key activation enables immediate maximum-speed operation for tubing priming, line flushing, or rapid volume displacement—critical during method setup or cleaning-in-place (CIP) procedures.
• Universal Pump Head & Tubing Support: Compatible with eight standard pump head families (YZ1515, YZII15, YZ2515, YZII25, DG15-24, KZ25, and others), accommodating tubing inner diameters from 0.5 mm to 6.4 mm (#13–#36), thereby covering flow ranges from 4.2 mL/min up to 6000 mL/min per channel.
• Robust Industrial Design: IP31-rated enclosure provides protection against vertically falling drips and solid objects >2.5 mm; compact footprint (292 × 207 × 181 mm) and lightweight construction (5.2 kg) facilitate benchtop deployment or rack-mount integration.

Sample Compatibility & Compliance

The WT600-2J is inherently chemically inert—fluid contact occurs exclusively within user-supplied tubing, eliminating compatibility constraints imposed by internal wetted materials. This makes it suitable for aggressive solvents (e.g., acetone, THF), biological buffers, cell culture media, acids, and slurries—provided compatible elastomeric tubing (e.g., PharMed® BPT, Viton®, silicone, or Tygon®) is selected. While the base unit does not carry CE marking by default, CE-compliant versions are available upon explicit request and subject to conformity assessment per EU Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU. The pump meets general electrical safety requirements aligned with IEC 61010-1 for laboratory equipment and supports audit-ready operation when integrated into GLP/GMP workflows via traceable external control logging.

Software & Data Management

Although the WT600-2J operates without proprietary software, its RS485 interface supports standardized Modbus RTU protocol (slave ID configurable, baud rates up to 115.2 kbps), enabling interoperability with LabVIEW™, Python-based control scripts (via PyModbus), MATLAB® Instrument Control Toolbox, or industrial HMIs. All analog and digital control signals—including start/stop, direction reversal, and real-time speed setpoint—are fully deterministic and timestamp-capable when routed through synchronized data acquisition systems. For regulated environments, external software platforms may implement 21 CFR Part 11-compliant electronic signatures, audit trails, and user access controls—leveraging the pump’s deterministic response and memory retention as foundational elements of data integrity.

Applications

• Automated liquid handling in HPLC mobile phase delivery, fraction collector triggering, and column regeneration cycles
• Continuous feeding of reagents or nutrients in microbial fermentation and bioreactor perfusion systems
• Controlled dosing in pharmaceutical formulation studies, dissolution testing, and stability chamber circulation
• Low-shear transfer of shear-sensitive suspensions (e.g., liposomes, microcarriers, or tissue homogenates)
• Calibration fluid delivery in flow cytometry, environmental monitoring sensors, and water quality analyzers
• Integration into custom-built OEM instruments requiring silent, non-invasive, and electrically isolated fluid transport

FAQ

Does the WT600-2J support bidirectional flow control?
Yes—the pump supports reversible rotation with identical performance specifications in both forward and reverse directions.
Can multiple WT600-2J units be daisy-chained via RS485?
Yes—up to 32 devices can share a single RS485 bus using unique slave IDs, enabling centralized orchestration in multi-pump fluid networks.
What is the minimum controllable flow rate with high accuracy?
At 60 rpm with a #13 tube (0.51 mm ID) on a YZ1515 head, typical minimum stable flow is ~4.2 mL/min, with speed resolution of 1 rpm and accuracy ≤±1% of setpoint.
Is firmware upgrade capability available?
No—the WT600-2J uses fixed-function embedded firmware; functionality updates are implemented only through hardware revision or replacement units.
How is tubing wear monitored or compensated for over time?
The pump does not include active tubing wear detection; users must schedule preventive tubing replacement based on cycle count, chemical exposure, and observed flow deviation—consistent with ISO 8536-4 and USP <1058> guidance for peristaltic pump validation.