LongerPump WT3000-1JA Brushless DC Micro Gear Pump with Stainless Steel Pump Head

Overview

The LongerPump WT3000-1JA is a precision-engineered brushless DC micro gear pump designed for continuous, pulse-free fluid delivery in demanding laboratory and analytical environments. Based on positive displacement gear pumping principles, it delivers stable volumetric flow across a wide operational range without flow pulsation—critical for applications requiring laminar, reproducible liquid handling such as HPLC sample introduction, reagent dosing in automated analyzers, or controlled feeding in microreactor systems. Its stainless steel-compatible pump head architecture—available with PEEK or PTFE gearing—ensures chemical resistance and mechanical stability when conveying mildly aggressive, viscous, or temperature-sensitive fluids. Unlike brushed motor alternatives, the integrated brushless DC motor eliminates commutator wear, enabling maintenance-free operation over extended service life while delivering high torque at low speeds and precise speed linearity across its full 300–3000 rpm range.

Key Features

• Brushless DC motor drive ensures >10,000 hours MTBF, zero brush dust generation, and consistent torque output across speed range
• Stainless steel pump housing with interchangeable PEEK or PTFE gear sets optimized for chemical compatibility and thermal stability
• Pulse-free flow performance validated per ISO 5199 Annex B methodology, with flow ripple <±0.5% of setpoint under steady-state conditions
• High-resolution speed control: 1 rpm step resolution with linear analog/digital input mapping (4–20 mA, 0.5–5 V, 1.0–10 V, or 1.0–10 kHz)
• RS485 Modbus RTU interface enables integration into SCADA, LIMS, or PLC-controlled lab automation platforms
• Onboard memory retains user-defined parameters (speed setpoints, direction, control mode) after power cycle
• Forced-air thermal management maintains motor and electronics within safe operating limits during continuous duty at rated load
• IP31-rated enclosure provides protection against vertically falling solids and limited ingress of moisture—suitable for standard laboratory benchtop use

Sample Compatibility & Compliance

The WT3000-1JA accommodates a range of chemically diverse media, including aqueous buffers, organic solvents (e.g., acetonitrile, methanol), glycerol-water mixtures (up to 200 cSt), and particle-laden suspensions with solids ≤10 µm in diameter. Pump heads MG204, MG209, and MG213 are certified compliant with FDA 21 CFR 177.2440 (for PEEK) and 177.1550 (for PTFE), supporting use in GLP-regulated environments where material traceability and extractables profiling are required. While not intrinsically rated for hazardous locations, the pump meets IEC 61000-6-3 (EMI emission) and IEC 61000-6-2 (immunity) standards for laboratory electromagnetic compatibility. It supports audit-ready operation when paired with validated control software logging RPM, runtime, and external command timestamps—aligning with ALCOA+ data integrity principles.

Software & Data Management

The pump operates autonomously via front-panel membrane keypad or remotely via RS485. LongerPump provides a Windows-based configuration utility (compatible with Win10/11, 64-bit) that enables firmware updates, calibration offset adjustment, and real-time monitoring of operational parameters—including actual vs. commanded speed, thermal sensor readings, and communication error counters. All control commands and system events (start/stop, speed change, fault triggers) are timestamped and can be exported in CSV format for traceability. When integrated into larger systems, the Modbus register map supports read/write access to 16 configurable parameters—including target RPM, direction flag, run status, and analog input scaling coefficients—enabling seamless interoperability with LabVIEW, MATLAB, or custom Python-based control scripts.

Applications

• HPLC and UHPLC auxiliary solvent or mobile phase delivery in gradient or isocratic configurations
• Continuous feed in electrochemical flow cells and microfluidic reaction monitoring setups
• Controlled reagent addition in automated titration or colorimetric assay platforms
• Low-pulsation perfusion in organ-on-chip and bioreactor nutrient circulation loops
• Calibration fluid dispensing in metrology labs requiring gravimetric flow verification per ISO 4064-2
• Process validation support for pharmaceutical manufacturing, where repeatable, documented flow profiles are required under GMP Annex 11

FAQ

What pump heads are compatible with the WT3000-1JA?
The WT3000-1JA accepts MG204, MG209, and MG213 pump heads—each available with PEEK or PTFE gears depending on chemical and thermal requirements.
Can the pump handle abrasive slurries?
It supports liquids containing suspended particles ≤10 µm in diameter; for larger particulates or highly abrasive media, upstream filtration or alternative pump technologies (e.g., diaphragm or peristaltic) are recommended.
Is the RS485 interface compatible with standard Modbus RTU protocols?
Yes—the device implements a full Modbus RTU slave stack conforming to Modbus Application Protocol v1.1b, with register addressing aligned to common industrial practice.
Does the pump meet regulatory requirements for use in pharmaceutical QC labs?
While the pump itself is not 21 CFR Part 11-certified out-of-the-box, its deterministic control behavior, non-volatile parameter storage, and timestamped event logging support qualification under internal SOPs when deployed with validated host software and procedural controls.
What is the maximum continuous operating temperature of the PEEK gear set?
PEEK gears maintain dimensional stability and mechanical integrity up to +120°C for liquid-phase contact; ambient operating temperature must remain within 0–40°C per specification.