LongerPump WT3000-1JB Micro Gear Pump

Overview

The LongerPump WT3000-1JB is a precision-engineered micro gear pump designed for demanding laboratory fluid handling applications requiring stable, pulseless, and highly controllable flow delivery. Based on positive displacement gear pumping principles, it utilizes a compact, high-tolerance stainless steel gearset housed in chemically resistant pump heads—available in PEEK or PTFE configurations—to ensure compatibility with aggressive, viscous, or temperature-sensitive media. Its brushless DC motor delivers consistent torque across the full speed range (300–3000 rpm), enabling precise volumetric throughput from 85.7 to 2571.4 mL/min depending on selected pump head geometry and fluid properties. Unlike peristaltic or diaphragm alternatives, the WT3000-1JB eliminates pulsation and offers superior pressure capability (up to 1.4 MPa), making it suitable for high-backpressure systems such as inline filtration, HPLC sample introduction, solvent delivery in reaction modules, or continuous-feed synthesis setups.

Key Features

• Brushless DC motor drive ensures high efficiency, zero maintenance, and extended service life without carbon brush wear or commutator degradation.
• Modular pump head architecture supports three interchangeable gear head variants (MG/MS204, MG/MS209, MG/MS213), each optimized for distinct flow-pressure-viscosity trade-offs and chemical compatibility profiles.
• Pulseless, low-noise operation (<55 dB(A) typical) enabled by precision-machined stainless steel gears and rigid housing design—critical for noise-sensitive environments including analytical labs and cleanrooms.
• High-resolution speed control (1 rpm step resolution) with linear analog and digital input options (4–20 mA, 0.5–5 V, 1.0–10 V, 1.0–10 kHz), supporting seamless integration into automated workflows via PLCs or SCADA systems.
• RS485 serial interface compliant with Modbus RTU protocol for bidirectional communication, parameter readback, real-time status monitoring, and remote firmware updates.
• Intelligent overload protection: automatic mechanical decoupling activates when load torque exceeds preset threshold, preventing motor stall and gear damage during dry-run or blocked-outlet conditions.
• Onboard 128×32 graphical LCD provides intuitive visualization of operating parameters—including setpoint speed, actual speed, accumulated volume, elapsed time, and error codes—with tactile membrane keypad and rotary encoder for rapid local configuration.

Sample Compatibility & Compliance

The WT3000-1JB accommodates a broad spectrum of process fluids, including aqueous buffers, organic solvents (e.g., THF, DMF, DCM), glycerol-water mixtures (up to 200 cSt), and slurries containing suspended particles ≤10 µm in diameter. PEEK pump heads support continuous operation at temperatures from –45 °C to +120 °C, while PTFE variants are rated to +50 °C and offer enhanced resistance to strong acids and halogenated compounds. All wetted materials comply with USP Class VI biocompatibility standards and FDA 21 CFR 177.2415 (for PTFE) and 177.2510 (for PEEK). The unit’s IP31-rated enclosure meets IEC 60529 requirements for protection against vertically falling drips and solid objects >2.5 mm, ensuring safe deployment in standard laboratory environments. While not certified for explosive atmospheres, its non-sparking motor and absence of internal batteries make it suitable for general-purpose chemical handling under GLP and ISO/IEC 17025-accredited lab conditions.

Software & Data Management

LongerPump provides optional PC-based configuration software compatible with Windows 10/11 that enables advanced calibration, flow rate validation, and batch programming—including programmable dispensing sequences with volume, interval, and repeat count parameters. All calibration coefficients (e.g., flow correction factors per pump head and fluid viscosity) are stored non-volatilely and persist through power cycles. Audit trail functionality logs all parameter changes, start/stop events, and fault conditions with timestamps—supporting traceability requirements under FDA 21 CFR Part 11 when used with appropriate electronic signature controls. Data export is supported in CSV format for integration with LIMS or ELN platforms. Firmware updates retain user-defined settings and maintain backward compatibility across minor version releases.

Applications

• Automated reagent dispensing in clinical chemistry analyzers and immunoassay platforms.
• Continuous feed of viscous polymer solutions or nanoparticle suspensions in material science synthesis reactors.
• Controlled solvent delivery in preparative chromatography and extraction systems.
• Calibration fluid circulation in flow meter verification rigs and sensor test benches.
• In-line dosing of catalysts or initiators in continuous-flow microreactors.
• High-pressure cleaning or rinsing in semiconductor wafer processing tool interfaces.

FAQ

What pump head configurations are available for the WT3000-1JB, and how do they differ?

The WT3000-1JB supports three modular gear heads: MS204 (lowest flow/high pressure), MS209 (mid-range balance), and MS213 (highest flow/lower pressure). Each is offered with either PEEK or PTFE gears, differing in thermal stability, chemical resistance, and maximum operating temperature.
Is the pump suitable for sterile or pharmaceutical-grade fluid transfer?

While the pump itself is not autoclavable, PEEK and PTFE wetted parts meet USP Class VI and relevant FDA CFR criteria. For aseptic applications, it must be integrated into validated closed-loop systems with appropriate sterilization protocols (e.g., SIP using steam or hydrogen peroxide vapor).
Can the WT3000-1JB operate continuously for extended periods?

Yes—its brushless DC motor and thermally managed driver electronics enable uninterrupted operation at rated load for ≥10,000 hours under ambient conditions meeting specification (0–40 °C, <80% RH).
How is flow accuracy maintained over time and varying fluid viscosities?

Flow calibration is performed per pump head and fluid family using gravimetric or timed-volume methods. Correction factors are applied in real time via the controller’s internal algorithm; users may update these values via software or front-panel interface after recalibration.
Does the unit support compliance with regulatory data integrity requirements?

When deployed with the optional audit-trail-enabled software and configured with role-based access controls, the system supports ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) and aligns with Annex 11 and 21 CFR Part 11 expectations for electronic records and signatures.