LongerPump 80 Series Brushless Servo-Integrated Peristaltic Pump

Overview

The LongerPump 80 Series Brushless Servo-Integrated Peristaltic Pump is an engineered solution for high-precision, closed-loop fluid handling in automated laboratory and industrial process environments. Unlike conventional brushed or stepper-driven peristaltic pumps, this system integrates a high-torque brushless servo motor with a dedicated servo driver and a 17-bit absolute encoder into a single compact mechanical unit—eliminating external drive cabinets and reducing signal latency. It operates on the fundamental principle of peristalsis: occluding flexible tubing via rotating rollers to generate unidirectional, pulse-free flow without fluid contact with moving parts. Its design supports both position- and speed-controlled operation, enabling repeatable volumetric dosing (e.g., for calibration standards or reagent addition) and stable continuous flow (e.g., in HPLC mobile phase delivery or bioreactor feed systems). The pump’s native compatibility with industrial control interfaces—including analog 4–20 mA and 0–5 V inputs, TTL-level pulse trains, and RS485 Modbus RTU—makes it suitable for integration into PLC-based automation architectures compliant with IEC 61131-3 and ISA-88 frameworks.

Key Features

• Integrated brushless servo architecture: Motor, driver, and 17-bit absolute encoder co-located within a single housing—reducing electromagnetic interference, simplifying wiring, and improving positional repeatability.
• Dual-mode control: Supports both position mode (via pulse/direction signals) for precise angular displacement and speed mode (via analog voltage/current, frequency input, or Modbus command) for dynamic flow rate regulation.
• Real-time closed-loop feedback: Encoder-derived speed output (10 Hz–6 kHz linearly scaled to 1–600 rpm) and configurable fault alarm (active-high or active-low) enable seamless integration with SCADA and MES platforms for predictive maintenance logging.
• Industrial-grade communication: RS485 interface with Modbus RTU protocol (addressable from 1 to 127), configurable baud rates (9600–57600 bps), and parity-free transmission ensures robust interoperability with Allen-Bradley, Siemens, and Omron PLCs.
• Wide operational envelope: Rated for continuous duty at ambient temperatures up to 40 °C and relative humidity below 80% non-condensing—validated per IEC 60068-2 environmental stress testing protocols.
• Modular pump head compatibility: Designed for use with KZ25-13, KZ35-13, and YZ35-13 series pump heads and standard Norprene®, PharMed®, or Viton® tubing (sizes #15 through #82), supporting flow rates up to 11,000 mL/min in single-channel configuration.

Sample Compatibility & Compliance

The 80 Series accommodates a broad range of chemically resistant tubing materials—including silicone, EPDM, fluoropolymer-lined, and pharmaceutical-grade thermoplastic elastomers—ensuring compatibility with aqueous buffers, organic solvents, acids, and bases commonly used in analytical, bioprocessing, and environmental applications. While not certified for direct USP Class VI or ISO 10993 use, its modular construction allows end users to select tubing and pump heads compliant with FDA 21 CFR Part 11 requirements when paired with validated software control systems. The pump meets CE marking requirements under the Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU), and its electrical isolation conforms to IEC 61000-4 immunity standards (ESD, EFT, surge). For GxP-regulated workflows, audit trail functionality must be implemented at the supervisory control layer (e.g., LabVIEW, Ignition SCADA), as the pump itself provides raw status data—not electronic record generation.

Software & Data Management

The pump does not include embedded firmware-based data logging or GUI software; instead, it functions as a deterministic field device that responds to standardized industrial control signals. All configuration (e.g., alarm polarity, communication address, baud rate) is performed via Modbus register writes or hardware DIP switches. When integrated with host systems supporting Modbus TCP gateways or OPC UA servers, real-time speed values and fault states can be mapped to historian databases (e.g., OSIsoft PI, Canary Labs) for trend analysis and deviation reporting. For laboratories requiring 21 CFR Part 11 compliance, third-party software such as Thermo Fisher SampleManager LIMS or LabVantage QMS may be configured to capture and digitally sign pump operational parameters—including start/stop timestamps, target RPM, and encoder-derived actual RPM—as part of batch records.

Applications

• Automated liquid handling in clinical chemistry analyzers and immunoassay platforms requiring precise, low-pulsation reagent dispensing.
• Continuous feed control in pilot-scale bioreactors and perfusion culture systems where flow stability directly impacts cell viability and metabolite yield.
• In-line sampling and dilution in continuous process verification (CPV) setups aligned with ICH Q5 and Q8 guidelines.
• Calibration fluid delivery in metrology labs performing gravimetric flow validation per ISO 4064-2.
• Mobile phase delivery in preparative HPLC and SFC systems where solvent compatibility and pressure-independent flow accuracy are critical.
• Environmental monitoring stations requiring long-term unattended operation with remote diagnostics via Modbus-over-4G telemetry.

FAQ

What tubing sizes are supported?
The 80 Series supports tubing IDs ranging from 0.5 mm (#15) to 6.4 mm (#82), depending on the installed pump head (KZ25-13, KZ35-13, or YZ35-13). Maximum flow capacity varies accordingly—up to 11,000 mL/min with #73 or #82 tubing on KZ35-13 or YZ35-13 heads.
Does the pump support bidirectional flow?
Yes—direction reversal is programmable via digital input (dry contact), pulse direction signal, or Modbus command (Function Code 06, register 0x0002), enabling recirculation or backflush routines.
Is firmware update capability available?
Firmware updates are performed exclusively via RS485 using proprietary utility software provided by LongerPump under NDA; no over-the-air or USB update path exists.
Can the pump be used in explosion-proof environments?
No—the unit lacks ATEX, IECEx, or UL HazLoc certification. It is rated for general-purpose indoor laboratory and light industrial use only.
How is flow rate calibrated?
Flow is inferred from motor RPM and tubing geometry (ID, wall thickness, roller offset). For traceable calibration, users must perform gravimetric or volumetric flow verification per ASTM D3557 or ISO 7748 and apply correction factors in the host controller.