Masterflex L/S Peristaltic Pump System (Separate Drive & Controller, No Display)

Overview

The Masterflex L/S Peristaltic Pump System (Model 77913-45) is a robust, industrial-grade peristaltic pumping solution engineered for precise, contamination-free fluid transfer in demanding laboratory and pilot-scale applications. Based on the well-established L/S® (Liquid-Solid) peristaltic principle—where rollers compress flexible tubing against a rigid housing to generate positive displacement—the system delivers repeatable volumetric flow without exposing the drive mechanism or motor to process fluids. Designed for environments where operator safety, chemical compatibility, and maintenance simplicity are critical, this analog-controlled, display-free configuration features a physically separated drive unit and controller connected via a 9.3-meter cable—enabling remote operation in hazardous, humid, or space-constrained locations. Its reversible operation supports bidirectional priming and post-run tube cleaning, while the integrated 4–20 mA analog input allows seamless integration into centralized process control systems compliant with industrial automation standards.

Key Features

• Separate drive and controller architecture with 9.3 m interconnect cable for safe, flexible installation in harsh or inaccessible areas
• Analog speed control via 4–20 mA signal (pump halts automatically below 4 mA), supporting integration with PLCs, SCADA, and legacy analog instrumentation
• Reversible rotation for forward/backward pumping—enabling effective tube purging, sample recovery, and bidirectional calibration verification
• High-precision speed regulation: ±2% accuracy across full 6–600 rpm range (07553-series drive), ensuring consistent volumetric delivery under variable load conditions
• IP23-rated controller and IP21-rated motor provide protection against vertically falling drips and limited dust ingress—suitable for general laboratory and light industrial use
• Heavy-wall tubing compatibility (e.g., L/S® 15, 24, 35, 36) enables reliable handling of viscous, abrasive, or shear-sensitive media up to 2.4 mm wall thickness
• Easy-Load® 3 pump head (77800-60) permits rapid, tool-free tubing loading/unloading with visual alignment guides—reducing downtime and operator error

Sample Compatibility & Compliance

The system accommodates a broad spectrum of chemically aggressive, sterile, or particulate-laden fluids through its wide selection of FDA-compliant, USP Class VI-certified tubing—including Tygon® LFL (low extractables, long-life fluoropolymer-reinforced), platinum-cured silicone, and enhanced bioprocess-grade silicones. All tubing conforms to ISO 10993-5 (cytotoxicity) and meets NSF/ANSI 51 for food equipment materials. The 07553-77 drive and 77913-45 system carry CE marking (per Directive 2014/30/EU EMC and 2014/35/EU LVD) and are manufactured under an ISO 9001:2000–certified quality management system. While not inherently 21 CFR Part 11–compliant due to lack of digital audit trail, the analog architecture supports GLP/GMP workflows when paired with external data loggers meeting ALCOA+ principles.

Software & Data Management

This analog-only configuration does not include embedded firmware, touchscreen interface, or USB/Ethernet connectivity. Flow rate is set exclusively via manual potentiometer adjustment on the controller or externally via 4–20 mA current loop. For traceable operation in regulated environments, users may integrate third-party analog-to-digital converters (e.g., Omega OM-DAQ-USB-2401) to record speed, runtime, and direction signals into validated electronic lab notebooks (ELNs) or LIMS platforms. Calibration records, maintenance logs, and tubing replacement schedules must be maintained manually per internal SOPs—consistent with non-instrumented auxiliary equipment classification under FDA guidance.

Applications

• Continuous feed of reagents, buffers, or cell culture media in bioreactors and fermentation systems
• Accurate dosing of high-viscosity polymers, slurries, or suspensions in materials science labs
• Safe transfer of corrosive acids, organic solvents, or cytotoxic compounds where sealless operation eliminates leakage risk
• Automated sampling in environmental monitoring stations using remote 4–20 mA control from data loggers
• Multi-stream blending via parallel pump heads (up to four on 07553-85/87 variants) with matched flow profiles
• Cleaning-in-place (CIP) and sterilization-in-place (SIP) support via reversible flow and chemically resistant tubing options

FAQ

What tubing sizes are supported by the Easy-Load® 3 pump head included in model 77913-45?
The Easy-Load® 3 pump head (77800-60) accommodates L/S® tubing sizes 13, 14, 16, 17, 18, and 25—with inner diameters ranging from 0.8 mm to 4.8 mm.
Can this pump operate continuously at maximum speed (600 rpm)?
Yes—continuous operation at rated speed is supported when paired with appropriate tubing (e.g., Tygon® LFL L/S 16) and within ambient temperature limits (5–40 °C) and duty cycle guidelines specified in Masterflex Technical Bulletin TB-001.
Is the 4–20 mA input isolated from the drive electronics?
The 4–20 mA analog input is non-isolated; users requiring galvanic isolation must install an external signal isolator compatible with 0–10 V or 4–20 mA loops.
Does the system include tubing, and what is its expected service life?
Model 77913-45 includes one 3-meter roll of Tygon® LFL L/S 16 tubing (06429-16). Under typical continuous operation at mid-range speeds and moderate pressure, service life exceeds 1,000 hours—though actual longevity depends on chemical exposure, pulsation frequency, and operating temperature.
Are replacement pump heads available for different tubing configurations?
Yes—standard, Easy-Load®, Easy-Load II®, and Easy-Load 3® pump heads are available separately, each optimized for specific tubing families and wall thicknesses (standard 1.6 mm or heavy-wall 2.4 mm).